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Tambong Flashcards

1
Q

States that the voltage or potential difference between two points is directly proportional to
the current or electricity passing through the resistance and directly proportional to the
resistance of the circuit.
A. Ohm’s law
B. Voltage law
C. Amperage law
D. Electrical law

A

Answer: A

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2
Q

Based on the 2009 Philippine Electrical Code, what is the minimum conductor size in mm2
for a voltage rating of 0-2,000 volts when using copper wire?
A. 2
B. 6
C. 8
D. 10

A

Answer: A

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3
Q

A farmhouse requires a minimum conductor size of 2 mm2
which is equivalent to AWG ____.
A. 10
B. 12
C. 14
D. 16

A

Answer: C (AWG 14 has 2.08 mm2
conductor size, AWG 16 should not be used in houses.
Except for the drop wire, the common household wires are AWG nos. 10, 12 & 14.)

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4
Q

Which electrical wire in the list below has the biggest cross-sectional area?
A. AWG 14
B. AWG 12
C. AWG 10
D. AWG 8

A

Answer: D

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5
Q

Which type of electrical wire has a maximum operating temperature of 90 oC?
A. THW
B. RHW
C. THHN
D. THWN

A

C. THHN

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6
Q

Based on the Phil. Electrical Code, what is the minimum conductor size in mm2
for a voltage rating of 2,001-8,000 volts when using copper, aluminum or copper-clad aluminum wire?
A. 2 B. 6 C. 8 D. 10

A

Answer: 8

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7
Q

If V is voltage, I is current and P is power, according to Ohm’s law, V is equal to _____.
A. P/I B. IR C. I/P D. I2R

A

B

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8
Q

Ohm’s law is applicable to _____.
A. DC only B. AC only C. Both DC and AC D. DC but not AC

A

C

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9
Q

Ohm’s law applies to both AC and DC circuits as long as mutual _________ of the circuit is
considered.
A. Resistance B. Capacitance C. Conductance D. Inductance

A

Answer: D

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10
Q

The resistivity of annealed copper in ohm meters at 20oC.
A. 1.72 x 10-8 B. 1.59 x 10-8 C. 1.68 x 10-8 D. 2.65 x 10-8

A

A

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11
Q

The resistance of a certain length of wire can be obtained by multiplying its ________ with
its length and dividing the resulting product by the cross-sectional area of the wire.
A. Conductivity B. Resistivity C. Malleability D. Ductility

A

B

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12
Q
  1. A farmstead has its farthest load located 350 linear meters from a single phase power source.
    What length of the wire in meters should be used in the voltage loss computation?
    A. 350 B. 600 C. 700 D. 500
A

C

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13
Q

In connecting electricity from a post to a farmhouse, a ______ wire is needed.
A. Transmission B. Drop C. Automotive D. Electrical

A

B

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14
Q

The minimum wire size for a farmhouse drop wire.
A. AWG 4 B. AWG 6 C. AWG 8 D. AWG 10

A

B

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15
Q

A solar powered slaughterhouse uses electrical stunning gun to make the animals insensible
to pain before the slaughter. What should be the voltage of the stunning gun?
A. 12 Vdc B. 24 Vdc C. 220 Vdc D. 220 Vac

A

D

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16
Q

Based on PAES 419:2000, the recommended lighting intensity in lux (lumen/m2) for fruit
and vegetable processing plant are: 100 for outside the building, 200 for general indoor
locations, and ___ for working tables.
A. 300 B. 500 C. 400 D. 600

A

B

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17
Q

A poultry layer area requires a brightness of 1,600 lumens. What is the wattage of a daylightcolor LED bulb that shall be used?
A. 100 B. 80 C. 75 D. 60

A

A. (since a 100-watt daylight-color LED bulb brightens by about 1,600 lumens)

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18
Q

In off-grid farmhouse electrification, which one has the lowest operation and maintenance
cost?
A. Solar Home System B. Hydro power plant C. Diesel generator D. Grid extension

A

A

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19
Q

Which one has the highest operation and maintenance cost?
A. Solar Home System B. Hydro power plant C. Diesel generator D. Grid extension

A

C

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20
Q

In off-grid barangay electrification located 3 kilometers from the electricity grid, which one
is recommended?
A. Solar Home System B. Hydro power plant C. Diesel generator D. Grid extension

A

D

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21
Q

Which electricity source has the highest greenhouse gas emission?
A. Solar Home System B. Hydro power plant C. Diesel generator D. Grid extension

A

Answer: C

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22
Q

To minimize power loss, which equipment is needed to transform DC electricity from a
centralized solar power plant into AC electricity before transmitting it to distributed 220-volt
farmstead electrical devices?

A. Inverter B. Transformer C. Converter D. Transmitter

A

Answer: A

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23
Q

A 950-kw cassava flour processing plant is to be powered using hydro. Which electricity
source will you use recommend?

A. Picohydro B. Microhydro C. Minihydro D. Small hydro

A

Answer: C (Under the Philippine classification, minihydro is over 100 kw up to 10 mw)

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24
Q

A 3 hectare hillside farm is to be energized. It is 20 meters below a river having a dependable
summer discharge of 50 liters/second. Which electricity source will you use recommend?
A. Picohydro B. Microhydro C. Minihydro D. Small hydro

A

Answer: B (Picohydro is up to 5 kw only while mini and small hydros are oversized)

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25
Q

The 1-kw lighting of a farmstead is to be energized using hydropower. It is 10 meters below
a creek having a dependable summer discharge of 5 liters/second. Which hydropower will
you recommend for development?
A. Picohydro B. Microhydro C. Minihydro D. Small hydro

A

Answer: A (since power requirement is less than 5 kw, picohydro is recommended)

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26
Q

An 8-bladed horizontal axis windmill with 12-meter tall tower has 2.5-m diameter rotor.
Estimate the power output in watts using the rule of thumb formula. Average windspeed in
the site is 3.2 m/s.
A. 61 B. 17 C. 71 D. 16

A
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27
Q

How many households can be powered by a minihydro having a power generation output of
500 kw if an average household consumes 1 kw and power loss is 15%?
A. 245 B. 425 C. 452 D. 524

A

B

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28
Q

The board used in Arduino open-source electronics platform based on easy-to-use hardware
and software which is able to read inputs like light on a sensor, temperature reading, a finger
on a button, or a Twitter message and can turn these inputs into outputs like activating a
motor, turning on an LED, turning on a solenoid valve, or publishing something online.
A. Microcontroller B. Integrated circuit C. Microchip D. Switch board

A

A

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29
Q

An Arduino microcontroller is used to activate mist sprinkler system for 10 minutes every
time the greenhouse temperature rises above a certain level. What device is best turned on by
the microcontroller to start the mist sprinklers?
A. Mist sprinkler B. Gate valve C. Solenoid valve D. Power switch

A

C

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30
Q

The name given to Arduino code files which serve as instructions to the microcontroller.
A. Program B. Sketch C. Control D. App

A

B

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31
Q

Part of solar module needed such that solar charging is continuous at slower rate when
partially shaded by trees.
A. Blocking diode B. Bypass diode C. Shading diode D. Lightning diode

A

B

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32
Q

A diode needed as protection against lightning in solar installations.
A. Bypass diode B. Shading diode C. Blocking diode D. Lightning diode

A

C

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33
Q

The common pin, made as the pair to other pins, in integrated circuits (ICs).
A. +12 Vdc input B. +5 Vdc output C. Ground D. Binary output

A

C

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34
Q

An integrated circuit (IC) included as an important part of electronic instrumentation for
gathering speed and discharge real-time data.
A. Voltage reducer B. Variable resistor C. Timer D. Sensor

A

Answer: C

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35
Q

Which one is an integrated circuit (IC) used in instrumentation and control?
A. ES 8813 B. LM 333 C. CQ 556 D. TD 8062

A

B

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36
Q

What voltage is appropriate in remote instrumentation?
A. 5, 7 and 9 Vdc B. 7 Vdc C. 9 Vdc D. 5 Vdc

A

Answer: A

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37
Q

Data transmission to a remote, unelectrified and line-of-sight point is best done through ___.
A. Fiber optics B. Email C. Radio frequency D. Fax

A

Answer: C

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38
Q

In automatic control of irrigation dam gates, what switch is useful in the instrumentation?
A. Automatic transfer switch B. Pressure switch C. Power switch D. Time switch

A

a

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39
Q

Switch for automatic pump motor control of sealed water tanks in drip irrigation systems.
A. Automatic transfer switch B. Pressure switch C. Power switch D. Time switch

A

B

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40
Q

Under PAES 418:2002, washing of tomato is done by using ____% chlorox solution applied
by dipping, spraying or wiping with a damp cloth then drying the fruit before packing.
A. 0.5% B. 1% C. 1.5% D. 0%

A

b

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41
Q

Based on PAES 419:2000, the recommended optimum stack height in meters for storage of
both paddy and rice grains.
A. 4.27 B. 4.57 C. 4.75 D. 5.47

A

A

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42
Q

What standard shall be followed in constructing large-scale poultry dressing/slaughtering
plants?
A. PAES 422-1:2012 B. PAES 422-2:2012 C. PAES 422:2012 D. PAES 422-3:2012

A

B

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43
Q

Based on PAES 419:2000, the recommended optimum stack height for storage of wheat,
barley and maize grains.
A. 4.27 B. 4.57 C. 4.75 D. 5.47

A

B

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44
Q

PAES 419:2000 requires that food grains stored in a warehouse for bagged storage are in the
range of 12 to ____ % moisture content prior to storing.
A. 12 B. 12.5 C. 13 D. 14

A

D

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45
Q

The Philippine standard for grading and classification of paddy and milled rice grains.
A. PNS/BAFS 290:2019 B. PNS 42:2019 C. PNS 162:2015 D. PNS 194:2017

A

A

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46
Q

The Philippine standard for code of practice and postproduction of organic milled rice.
A. PNS/BAFS 290:2019 B. PNS 42:2019 C. PNS 162:2015 D. PNS 194:2017

A

B

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47
Q

The Philippine standard for Maximum Residue Limits (MRLs) of pesticide residues in rice.
A. PNS/BAFS 290:2019 B. PNS 42:2019 C. PNS 162:2015 D. PNS 194:2017

A

C

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48
Q

The Philippine general standard for contaminants and toxins in food and feed.
A. PNS/BAFS 290:2019 B. PNS 42:2019 C. PNS 162:2015 D. PNS 194:2017

A

D

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49
Q

Which one is not a part of a vertical feed mixer?
A. Conveyor B. Hopper C. Discharge chute D. Screw

A

A

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50
Q

A feed mixer tested to have mixing coefficient of variation of 10-15% is rated as _____.
A. Poor B. Fair C. Very good D. Good

A

D

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51
Q

As a standard, stripping efficiency of the mechanized stripping machine shall be at least
A. 80% B. 70% C. 85% D. 90%

A

A

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52
Q

As prescribed in PAES 419:2000, in constructing the walls of a warehouse for bagged
storage of grains, the wall should use _____ mm thick concrete hollow blocks with 12 mm
diameter reinforcing bars at horizontal and vertical spacing of 600 mm.

A. 100 B. 150 C. 200 D. 250

A

B

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53
Q

Known as the National Building Code of the Philippines.
A. PD 1096 B. RA 1096 C. PD 1069 D. RA 1906

A

A

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54
Q

Type of the building that is made of steel, iron, concrete, or masonry construction.

A. Type I B. Type II C. Type III D. Type IV

A

D

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55
Q

PAES 419:2000 requires that a normal-temperature warehouse intended for storage of bagged
grains shall have a minimum interior height between the beam and floor of ____ meters.
A. 3 B. 4. C. 5 D. 6

A

D

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56
Q

Under PAES 418:2002, in constructing a primary processing plant for fresh fruit and
vegetable, the windowsill shall be at least _____ m from the finished floor line.
A. 0.5 B. 0.75 C. 1 D. 1.25

A

C

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57
Q

Under PAES 418:2002, in constructing a primary processing plant for fresh fruit and
vegetable, the doors shall have a minimum width of _____ m.
A. 1 B. 1.5 C. 1.25 D. 1.75

A

B

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58
Q

Habitable rooms provided with artificial ventilation shall have ceiling heights of not less than
______ meters measured from the floor to the ceiling (PD 1096).

A. 2.1 B. 2.4 C. 2.7 D. 2.8

A

B

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59
Q

Smallest dimension in centimeters of concrete hollow blocks in the Philippines.

A. 10x20x40 B. 15x20x40 C. 20x20x40 D. 25x20x40

A

A

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60
Q

For buildings of more than one storey, the minimum ceiling height of the first storey shall be
_____ meters and that for the second storey 2.40 meters and succeeding storeys shall have an
unobstructed typical head-room clearance of not less than 2.10 meters above the finished
floor (PD 1096).

A. 2.1 B. 2.4 C. 2.7 D. 2.8

A

C

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61
Q

All buildings located in areas where there is no sanitary sewerage system shall dispose their
sewage to imhoff tank or ___________ and subsurface absorption field (PD 1096).

A. Imhoff tank B. Septic tank C. Waste tank D. Water tank

A

B

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62
Q

A tank for sewage consisting of an upper or sedimentation chamber with sloping floor
leading to slots through which the solids settle to the lower sludge-digestion chamber.

A. Imhoff tank B. Septic tank C. Waste tank D. Water tank

A

A

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63
Q

Based on the Building Code, when excavating near adjoining buildings the owners of
adjoining buildings shall be notified in writing at least how many days before excavation?

A. 10 B. 7 C. 15 D. 30

A

A

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64
Q

As provided in the Building Code, when curing concrete made from ordinary portland
cement, the concrete shall be maintained above 10 degrees Celsius and in moist condition for
the first how many days at least?

A. 30 B. 10 C. 15 D. 7

A

D

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65
Q

When curing concrete made from high strength portland cement, what is the minimum curing
time in days as provided in the Building Code?

A. 1 B. 5 C. 3 D. 7

A

C

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66
Q

What percentage of concrete strength is reached at the end of the first week?
A. 70% B. 50% C. 33% D. 80%

A

A

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67
Q

The initial setting of concrete starts in the first how many hours after concrete mixing?
A. 1-1.5 B. 4-5 C. 2-3 D. 6-7.5

A

C

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68
Q

Wood stick or board nailed horizontally at the stake which serves as the horizontal plane
where the reference points of building measurements are established.
A. Batter board B. Reference board C. Building reference D. Stake plane

A

A

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69
Q

In building construction, which step comes next to checking building permit?
A. Locating boundaries B. Staking C. Clearing D. Temporary fencing

A

A

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70
Q

To establish an accurate 90-degree corner in a building layout, what will you use?
A. 45 degrees triangle B. Carpenter’s square C. Whole plywood D. Carpenter’s level

A

C

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71
Q

Material other than portland cement, aggregate, or water that is added to concrete to modify
concrete properties.

A. Proofer B. Admixture C. Refiner D. Additive

A

B

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72
Q

What is the equivalent compressive strength of ordinary concrete in kg per square centimeter
for 2,500 psi?

A. 176 B. 1,136 C. 388 D. 5,500

A

A

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73
Q

To attain about 3,000 psi compressive strength in non-air entrained concrete, how many liters
of water should be added per bag of cement?

A. 27.6 B. 22 C. 25 D. 19

A

C

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74
Q

When using 0.75 inch nominal maximum size of coarse aggregate, what is the estimated
percentage of air content by volume in concrete?
A. 6-10 B. 4-8 C. 5-9 D. 3-6

A

B

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75
Q

When made of normal weight aggregate, what should be the maximum water-cement ratio of
concrete that is intended to be watertight when exposed to fresh water?

A. 0.44 B. 0.48 C. 0.42 D. 0.40

A

B

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76
Q

For a concrete agricultural structure made from normal weight aggregate and in contact with
sea water, what should be the maximum water-cement ratio for it to be watertight?

A. 0.48 B. 0.42 C. 0.44 D. 0.40

A

C

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77
Q

The weight in kilograms of a 6-meter long standard 10 mm diameter reinforcing bar.

A. 1.3 B. 3.7 C. 2.2 D. 5.3

A

B

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78
Q

. The cross-sectional area in square millimeters of a standard 16 mm diameter reinforcing bar.

A. 201.1 B. 113.1 C. 314.2 D. 280.13

A

A

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79
Q

In a wall footing, the horizontal steel reinforcement is said to be normally adequate if steel
cross sectional area relative to concrete cross sectional area is ________.

A. 0.02-0.03% B. 0.4-0.5% C. 0.2-0.3% D. 1-2%

A

C

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80
Q

What is the least number of longitudinal bars in a tied concrete column?

A. 2 B. 4 C. 3 D. 6

A

B

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81
Q

What is the minimum diameter of longitudinal bars in a tied concrete column?

A. 8 mm B. 10 mm C. 16 mm D. 12 mm

A

C

82
Q

Based on ACI Code, what is the minimum diameter of lateral ties in a tied concrete column
for 32 mm or smaller longitudinal bars?

A. 6 mm B. 10 mm C. 8 mm D. 12 mm

A

B

83
Q

Based on ACI Code, what is the minimum diameter of lateral ties in a tied concrete column
for 36 to 57 mm and bundled longitudinal bars?

A. 6 mm B. 8 mm C. 12 mm D. 10 mm

A

C

84
Q

Based on ACI Code, what is the minimum diameter of lateral ties in a tied concrete column
for 36 to 57 mm and bundled longitudinal bars?

A. 6 mm B. 8 mm C. 12 mm D. 10 mm

A

C. 12mm

85
Q

. Based on ACI Code, the maximum spacing of lateral ties in a tied concrete column should
not be more than _____ times the diameter of the lateral ties.

A. 16 B. 24 C. 48 D. 32

A

C

86
Q

Based on the standards of American Concrete Institute (ACI), what are the minimum width
and minimum concrete depth, respectively, of a square independent column footing carrying
9 tonnes load if soil pressure is 2,000 psf?

A. 4.67’, 10” B. 3.33’, 10” C. 5.75’, 12” D. 6.6’,13”

A

B. (Based on ACI Table of Safe Load for Square Independent Column Footing)

87
Q

Using the standards of American Concrete Institute, specify the total number and size of
horizontal reinforcing bars needed for a concrete square column footing of a farmhouse
carrying 18 tonnes load if soil pressure is 2,000 psf and concrete compressive strength is
2,500 psi.

A. 4 pcs.10 mm B. 8 pcs.10 mm C. 16 pcs.12 mm D. 8 pcs.12 mm

A

Answer: C (Based on ACI Table of Safe Load for Square Independent Column Footing)

88
Q

Based on Farm-to-Market Road (FMR) standard, PAES 421:2009, if the slope of an FMR
exceeds ___%, concrete-lined or masonry-lined ditch should be provided.
A. 4% B. 5% C. 6% D. 7%

A

A

89
Q

Granular material of mineral composition such as sand, gravel, shell, crushed and uncrushed
stone or lightweight materials.
A. Aggregates B. Pebbles C. Crushed stones D. Granules

A

A

90
Q

The minimum carriageway of one-lane and two-lane farm-to-market roads, respectively,
excluding the road shoulders, shall be ______.
A. 3.5 and 7 m B. 3 and 6 m C. 2 and 4 m D. 2.5 and 5 m

A

C

91
Q

In lateral and sub-lateral irrigation canals where the available roadway width is 3 meters, the
carriageway and shoulder, respectively, of the farm-to-market road shall be _______.
A. 2.8 and 0.2 m B. 2 and 0.5 m C. 2.4 and 0.3 m D. 2 and 1 m

A

B

92
Q

In main irrigation canals where the available roadway width is 6 meters, the shoulder and
carriageway, respectively, of the farm-to-market road shall be ______.
A. 0.5 and 5 m B. 0.5 and 4.5 C. 1 and 4 m D. 1 and 5 m

A

C

93
Q

For gravel and bituminous farm-to-market roads, the minimum slope from the centerline
towards the ditch shall be ______.
A. 1% B. 2% C. 2.5% D. 3%

A

D.3%

94
Q

For concrete farm-to-market roads, the maximum slope from the centerline towards the ditch
shall be ______.
A. 5% B. 3% C. 1.5% D. 2.5%

A

C

95
Q

For farm-to-market roads constructed along the main, lateral and sub-lateral irrigation canals,
the run:rise side slope of the earth embankment shall be ______.
A. 2:1 B. 1.5:1 C. 1:1 D. 0.5: 1

A

B

96
Q

In farm-to-market roads, the minimum radius of curvature for flat, rolling and mountainous
terrains, respectively, shall be ______.
A. 75, 50 & 5 m B. 500, 150 & 50 m C. 150, 100 & 50 m D. 600, 200 & 100 m

A

B

97
Q

In a bituminous farm-to-market road, what course is the third layer from the top?
A. Aggregate subbase B. Aggregate C. Aggregate base D. Earth

A

A

98
Q

As an engineer, what thickness of the portland cement concrete pavement will you use in a
two-lane farm-to-market road?
A. 10 cm B. 20 cm C. 15 cm D. 25 cm

A

B

99
Q

In concrete farm-to-market road construction, what plus or minus in thickness variation will
you allow in the portland cement concrete pavement?
A. 10 mm B. 20 mm C. 30 mm D. 40 mm

A

B

100
Q

As a minimum, all culverts and storm drains used in relation with farm-to-market roads
should be designed using a storm of two-year return period and duration of ______.
A. 6 hours B. 12 hours C. 24 hours D. 18 hours

A

C

101
Q

Culverts and storm drains have ideal slope of 2-4 %. What is the absolute minimum slope for
culverts and storm drains?
A. 0.75 % B. 0.5 % C. 1 % D. 1.25 %

A

B

102
Q

In concrete farm-to-market road design, what class A concrete thickness will you use in
triangular concrete-lined ditch?
A. 10 cm B. 20 cm C. 15 cm D. 25 cm

A

C

103
Q

In concrete farm-to-market road design, what wall thickness will you use in rectangular
grouted riprap ditch?
A. 10 cm B. 15 cm C. 25 cm D. 20 cm

A

C

104
Q

As a contractor, what project management amount in terms of estimated direct cost
percentage will you charge aside from the 10-15 % profit in farm-to-market road projects?
A. 7.5% B. 5% C. 10% D. 12%

A

B

105
Q

Based on PNS/BAFS/PAES 216:2017, what is the mean roughness coefficient for rigid
concrete?
A. 0.010 B. 0.012 C. 0.013 D. 0.015

A

C

106
Q

The standard diameter of both vertical and horizontal reinforcing bars in open channel
construction.
A. 8 mm B. 12 mm C. 10 mm D. 16 mm

A

C

107
Q

In open channel construction, what class of concrete mix should be used?
A. Class AA B. Class A C. Class B D. Class C

A

B

108
Q

The standard spacing between vertical bars in open channel construction.
A. 10 cm B. 30 cm C. 20 cm D. 50 cm

A

C

109
Q

In open channel design, what is the standard concrete wall thickness of lateral trapezoidal
open channel?
A. 5 cm B. 10 cm C. 15 cm D. 20 cm

A

C

110
Q

The standard gage number of G.I. tie wire for open channel construction.
A. 8 B. 10 C. 16 D. 12

A

C

111
Q

In class A, B or C concrete, how many cubic meters of sand should be mixed to produce 1
cubic meter of concrete?
A. 0.25 B. 0.75 C. 0.50 D. 1.0

A

C

112
Q

In open channel construction, how many 40-kg bags of cement are needed per cubic meter of
concrete?
A. 12 B. 7.5 C. 9 D. 6

A

C

113
Q

In constructing open trapezoidal concrete open channels, how many 900-gm packs of water
proofing compound are needed per cubic meter of Class A (1:2:4) concrete mix?
A. 9 B. 6 C. 7.5 D. 12

A

A. Based on tabular values for Class A concrete mix,
No. of packs of water proofing compound = No. of bags of cement = 9 bags

114
Q

In concrete canal construction, how many 40-kg bags of cement are needed for a 20-km
lateral channel if it requires 0.6 cubic meter concrete per linear meter? Use 5% safety factor.
A. 67,500 B. 65,700 C. 113,400 D. 56,700

A

C.
Bags = Safety factor x Bags cement/cu.m. of concrete x Concrete volume/m x Length in m
= 1.05 x 9 bags/cu.m. x 0.6 cu.m/m x 20,000 m
= 113,400 bags

115
Q

How many truck loads of sand are needed for 30-km main irrigation canal requiring 3.5 cubic
meters concrete per linear meter? 1 truck load is 2.5 cubic meters. Use 5% safety factor.
A. 1,837 B. 22,050 C. 18,200 D. 18,357

A

B.
Truck loads = Safety factor x Cu.m. sand/cu.m. concrete x Trucks/cu.m. x Concrete volume
= 1.05 x 0.5 cu.m./cu.m. x 1 truck load/2.5 cu.m. x (3.5 cu.m/m x 30,000 m)
= 22,050 truck loads

116
Q

How many truck loads of gravel needed for an 10-km main irrigation canal requiring 4 cubic
meters concrete per linear meter? 1 truck load is 2.5 cubic meters. Use 6% safety factor.
A. 12,210 B. 13,200 C. 16,960 D. 11,220

A

C.
Truck loads = Safety factor x Cu.m. gravel/cu.m. concrete x Trucks/cu.m. x Concrete volume
= 1.06 x 1 cu.m gravel./cu.m. x 1 truck load/2.5 cu.m. x (4 cu.m/m x 10,000 m)
= 16,960 truck loads

117
Q

Determine the cement budget for 36-km irrigation canal if it requires half cubic meter
concrete per linear meter and cement costs Php200/bag? Use 5% safety factor.
A. Php 1,869,000 B. Php 34,020,000 C. Php 20,900,000 D. Php 18,960,000

A

Answer: B
Budget = Safety factor x Bags cement/cu.m. concrete x Concrete volume x Unit Cost
= 1.05 x 9 bags/cu.m. x (0.5 cu.m/m x 36,000 m) x Php 200
= Php 34,020,000

118
Q

The toxic component of biogas.
A. Hydrogen sulfide B. Hydrogen C. Sludge D. Sulfur

A

A

119
Q

The by-product of biogas production commonly used as soil conditioner after air drying.
A. Fertilizer B. Waste C. Sludge D. Slurry

A

C

120
Q

The amount paid to project owners from CDM fund for carbon emission reduction projects.
A. Emission value B. Carbon credit value C. Carbon trading value D. Carbon value

A

B

121
Q

The acronym of the Inter-Governmental Panel for Climate Change.
A. IGPCC B. IPC C. IPCC D. Inter-GPCC

A

C

122
Q

Best kind of biogas plant for large animal farms having effluents with low solid content.
A. Fixed dome B. Covered lagoon C. Floating type D. Balloon

A

B

123
Q

Plastic sheet for constructing balloon and bed lining in covered lagoon biogas plants.
A. High density polyethylene (HDPE)
B. Polyvinyl Chloride (PVC)
C. Acetate
D. UV-stabilized acetate

A

A

124
Q

By how many times is methane destructive to the environment than carbon dioxide?
A. 2 times B. 21 times C. 10 times D. 15 times

A

B

125
Q

Toxic by-product of geothermal power plants.
A. Hydrogen sulfide B. Carbon monoxide C. Carbon dioxide D. Sulfuric acid

A

A

126
Q

When using covered lagoon biodigester, what is approximate methane content in biogas?
A. 40% B. 70% C. 50% D. 80%

A

B

127
Q

What is the minimum methane content of biogas in order to operate biogas-fueled
generators?
A. 50% B. 85% C. 65% D. 90%

A

C

128
Q

When using 1:1 water-manure ratio, what is the approximate methane content of biogas?
A. 40% B. 60% C. 50% D. 80%

A

B

129
Q

. A device to convert biogas to electricity.
A. Converter B. Motor C. Electricity generator D. Biogas generator

A

D

130
Q

A board constructed across the bottom of the biogas digester to prevent early exit of slurry.
A. Baffle board B. Wall C. Divider D. Slurry retainer

A

A

131
Q

Covered lagoon biodigester, minihydro and solar energy projects are evaluated for financial
feasibility. Only one feasible project can be funded. Each of them requires PHP 20,000,000
investment. The financial internal rates of return are 8%, 9% and 10%, respectively. Annual
discount plus inflation rate is 11%. Which project shall be implemented?
A. Covered lagoon biodigester B. Minihydro C. None D. Solar

A

Answer: C (since all their IRRs are less than the discount plus inflation rate)

132
Q

Industrial bottling of virgin coconut oil prints a batch number. What is the main purpose of
this batch number?
A. Product recall B. Bottle identification C. Expiry indicator D. Serial number

A

A

133
Q

Which of the following methods is not applicable to increase the total solids content of liquid manure?

Drying
Solid-liquid separation
Dilution
Add bedding

A

Dilution

134
Q

When planning the layout buildings in a farm, which zone should implement shed and other storage structures with dry and quiet activities be placed?
Zone 1
Zone 2
Zone 3
Zone 4

A

Zone 2

135
Q

What solids fraction is determined if an oven dried sample is placed in a furnace for 1 hour at 550°C?

Suspended solids
Total solids
Dry matter
volatile solids

A

volatile solids

136
Q

According to PAES 419:2000, this is the optimum stack height in layers when storing sacks of maize.

15
16
17
18

A

18

137
Q

A natural or artificial process of nutrient enrichment whereby a water body becomes abundant in plant nutrients and low in oxygen content.

erosion
nitriifcation
Acidification
eutrophication

A

eutrophication

138
Q

Based on PAES 401:2001, what is the minimum ventilation rate for a farrowing unit under normal conditions?

0.08 m3/min
0.12 m3/min
0.24 m3/min
0.28 m3/min

A

0.28 m3/min

139
Q

It refers to the stress in a material tending to cause deformation by slippage along a plane or planes parallel to the imposed force.

Normal Stress
Shear Stress
Bearing Stress
Strain

A

Shear Stress

140
Q

It refers to the stress in a material tending to cause deformation along a plane or planes perpendicular to the imposed force.

Normal Stress
Shear Stress
Bearing Stress
Strain

A

Normal Stress

141
Q

It is a rigid structure that consists of a collection of two-force structural elements connected at pin joints or nodes.

Shell
Frame
Bearing Stress
Truss
Machine

A

Truss

142
Q

This refers to a mixture of cement, water and sand that is used to fill spaced between tiles.

Concrete
Paste
Mortar
Grout

A

Grout

143
Q

Concrete is a rigid aggregate of materials consisting of the following:

Hollow blocks, cement, sand, water
Gravel, cement, sand
Hollow blocks, gravel, sand, water
Gravel, cement, sand, water

A

Gravel, cement, sand, water

144
Q

This refers to a swine ranging from 40 to 65 kg in terms of weight.

Weanling
Fattener
Grower
Finisher

A

Grower

145
Q

It is a female swine that has not farrowed.

Gilt
Sow
dry sow
Boar

A

Gilt

146
Q

It is a type of poultry raised primarily for meat production.

Layer
Broiler
Game fowl
Breeder

A

Broiler

147
Q

It is the process of providing supplemental heat to broiler chicks from hatching up to the time they have grown sufficient feathers to control their own body temperature.

Hatching
Brooding
Candling
Weanling

A

Brooding

148
Q

It refers to female cattle between two to three years of age which has not given birth.

Calf
Yearling
cow
Heifer

A

Heifer

149
Q

he total energy does not include

chemical energy
conductive energy
electro-magnetic energy
nuclear energy

A

conductive energy

150
Q

Given the thermodynamic identity dU = TdS - PdV, an adiabatic process assumes a constant

S
T
U
V

A

S

151
Q

Which of the following materials has the highest absorptivity at room temperature?

Aluminum
Asbestos
Concrete
Wood

A

Concrete

152
Q

For an isotropic medium, the Fourier’s law is
*
0/1
q = -k dT/dx
q = k ∇T
q= -k ∇T
q = ∇(kT)

A

q= -k ∇T

153
Q

he Moody chart for pipe shows the friction factor as a function of the Reynolds number at
various roughness. Which of the commercial ducts has the highest roughness values?

Concrete
Rubber
Steel
Wood

A

Concrete

154
Q

The boundary layer theory is applicable to systems with

very large Nusselt number
very large Reynolds number
very small Nusselt number
very small Reynolds number

A

very large Reynolds number

155
Q

Light is simply the visible portion of the electromagnetic spectrum that lies

between 0.01 and 0.4 μm
between 0.76 and 100 μm
between 0.3 and 3.0 μm
between 0.4 and 0.76 μm

A

between 0.4 and 0.76 μm

156
Q

In a geometry that consists of two concentric spheres, the view factor Fsub(1-2) = 1 since the
entire radiation leaving the surface of the smaller sphere (R1) is intercepted by the larger sphere (R2). What is the value of Fsub(2-1)?

1
Less than 1
More than 1
Cannot be determined

A

Less than 1

157
Q

The highest pressure drop in the refrigeration cycle occurs at the
*

compressor
condenser
expansion device
evaporator

A

expansion device

158
Q

In a throttling device, the enthalpy in the direction of flow

can either increase or decrease
decreases
remains constant
increases

A

remains constant

159
Q

Infiltration most commonly occur because of air density differences between rooms. Heat gain through doorways from air exchange is influenced by the following factors:

doorway area, enthalpy of refrigerated air, density factor
doorway height, doorway width, sensible heat ratio of infiltration air
open-time factor, flow factor, effectiveness of doorway protective device
sensible and latent refrigeration load

A

open-time factor, flow factor, effectiveness of doorway protective device

160
Q

Typically, the height of refrigerated spaces varies between 8.5 and 10.5 m or more clear space between the floor and structural steel to allow forklift operation. The practical height for stalking pallets without rack is 4.5 to 5.5 m. How much allowance is given to aisles and space above the pallet stacks?
10%
20%
50%
40%

A

40%

161
Q

An air stream at a specified temperature and relative humidity undergoes evaporative cooling by spraying water into it at about the same temperature. The lowest temperature the air stream can be cooled to is

the dew point temperature at the given state
the dry bulb temperature at the given state
the saturation temperature corresponding to the humidity ratio at the given state
the wet bulb temperature at the given state

A

the wet bulb temperature at the given state

162
Q

Psychrometry is the study of moist air and its properties. For drying, which processes occur?

Dehumidification and cooling
Dehumidification and heating
Humidification and cooling
Humidification and heating

A

Humidification and heating

163
Q

Microorganisms are capable of growth over a wide range of temperatures. Temperature is used to categorized microorganisms. Those capable of growth at 5°C, some are able to grow at temperature as slow as -5°C and are the primary cause of spoilage of perishable foods are called

mesophiles
psychrotrophs
thermopiles
xerotrophs

A

psychrotrophs

164
Q

Fresh fruits and vegetables respire and release heat during storage. This heat produced by respiration varies with the product and its temperature. As the product temperature decreases,

heat of respiration increases exponentially
heat of respiration increases linearly
heat of respiration decreases exponentially
heat of respiration decreases linearly

A

heat of respiration decreases exponentially

165
Q

. All life-forms require water for growth. Water activity refers to the availability of water within a food system and is defined at a given temperature as

vapor pressure of air over the vapor pressure of solute
vapor pressure of air over the vapor pressure of solution
vapor pressure of solution over vapor pressure of solute
vapor pressure of solute over the vapor pressure of solution

A

vapor pressure of solute over the vapor pressure of solution

166
Q

According to PAES 201: 2000: Agricultural Machinery-heated air mechanical grain dryer, an indirect-fired dryer is in which the products of combustion do not come in contact with the products being dried. What is the minimum required heating system efficiency for furnace with biomass fuel?

50%
65%
75%
90%

A

50%

167
Q

Adiabatic drying assumes constant

Enthalpy
Humidity ratio
Relative humidity
Wet bulb temperature

A

Enthalpy

168
Q

The equilibrium moisture content at zero relative humidity is

0
14
100
18

A

0

169
Q

In a flat bed dryer, as the airflow rate (m3/s.m2) is increased exponentially, the pressure drop per meter depth

can either increase or decrease
decreases
increases
remains constant

A

C

170
Q

The minimum set of requirements for producing safe and wholesome food, which is an important part of regulatory control over the safety of the country’s food supply is called

effective management practices
good manufacturing practices
standard operating procedure
total quality management procedures

A

good manufacturing practices

171
Q

Many of the procedures for the control of microorganisms are managed by HACCP system of food safety. Developed in the food industry since the 1960s, HACCP is now accepted by food manufacturers and regulators. It is a preventive system that builds safety control features in the food products design and the process by which it is produced. HACCP stands for

Hazard Analysis and Chemical Corrective Point
Hazard Analysis and Critical Control Point
Health Analysis for Critical Corrective Program
Health Awareness and Critical Criteria Program

A

Hazard Analysis and Critical Control Point

172
Q

Refers to the application of engineering science and designs to the processes and systems involved in the sustainable production, post production and processing of safe food, feed, fiber, timber and other agricultural and biological materials and the efficient utilization, conservation, and management of natural and renewable resources in order to enhance human health in harmony with the environment

Agriculture
Agricultural and Biosystems Engineering
Civil Engineering
Agricultural Chemistry

A

Agricultural and Biosystems Engineering

173
Q

. The protection of inventions by RPABE registered as patents and utility models.

Intellectual Property
Copyright
Trademarks
Industrial Property

A

Intellectual Property

174
Q

Chair of the current Board of Agricultural and Biosystems Engineering:

Engr. Ariodear Rico
Engr. Juana Tapel
Engr. Sherwin Valdez
None of the above

A

Engr. Ariodear Rico

175
Q

The agency mandated to develop standards for agriculture and fishery machinery, tools and equipment.

AMTEC
BAFS
PhilMech
BAFE

A

BAFS

176
Q

Items indicated in the documents signed, used or issued by PABE in connection with the practice of profession except:

professional license number
professional tax receipt
duration of validity
registration date of license

A

registration date of license

177
Q

Part of the BAC that purpose is to enhance transparency of the government procurement process.

TWG
BAC Secretariat
End user
observers

A

observers

178
Q

Republic Act No. 9367 is also known as:

CARP Law
Renewable Energy Act
CARPER
Biofuels Act

A

Biofuels Act

179
Q

The code that deals with minimum standards and requirements for all buildings and structures:

RA 6541
RA 6657
RA 9003
RA 9367

A

RA 6541

180
Q

The agency mandated in the testing and evaluation of agricultural and fisheries machinery and equipment to be sold in the market.

AMTEC
BAFS
PhilMech
BAFE

A

AMTEC

181
Q

The following are the qualifications to become a member of the Board of ABE except:

natural-born citizen
registered PABE
active practitioner for not less than 7years
at least 35 years old

A

active practitioner for not less than 7years

182
Q

What should be the color of the neutral wire in a building electrical system?

green
red
white
black

A

white

183
Q

A type of fault that occurs when there is an erratic flow of current in the conductors

Sinusoidal fault
Earth fault
Ground fault
Arc fault

A

Arc fault

184
Q

It is a device that opens a circuit whenever it detects a ground fault.

AFCI
circuit breaker
GCFI
Fuse

A

GCFI

185
Q

How much is the maximum allowable resistance of a grounding electrode?
*

24 ohms
30 ohms
25 ohms
34 ohms

A

25 ohms

186
Q

Electric motors can _____ the power factor in a system.

Maintain
increase
Improve
decrease

A

decrease

187
Q

When does the power factor become greater than 1?

When the apparent power is greater than the reactive power
When the apparent power is greater than the true power
When the apparent power is equal to the true power
It will never happen

A

It will never happen

188
Q

Majority of electric power in the Philippines is produced using this.

Magnetism
Friction
When the apparent power is equal to the true power
Heat

A

Magnetism

189
Q

Majority of the energy consumed by incandescent light bulbs is converted into

heat and infrared radiation
cosmic rays
x-rays
Light

A

heat and infrared radiation

190
Q

Which room is required to have a GFCI outlet?

Living room
bedroom
Bathroom
Dining room

A

Bathroom

191
Q

Which is an assumption that should be considered when solving problems using the OHM’s LAW?

Conductors have infinite length
Conductors have finite length
Conductors have negligible resistances
Conductors have considerable resistances

A

Conductors have negligible resistances

192
Q

Which is an assumption that should be considered when solving problems using the OHM’s LAW?

Resistors have constant resistance
Resistors have infinite resistance
Resistors have variable resistance
Resistors can affect the circuit

A

Resistors have constant resistance

193
Q

Which statement is true when given with two conductors of the same type of conductive material with the same length?

The conductor with larger resistivity will have a larger resistance
The conductor with larger resistivity will have less resistance
The conductor with larger cross-sectional area will have a larger resistance
The conductor with larger cross-sectional area will have less resistance

A

The conductor with larger cross-sectional area will have less resistance

194
Q

Which statement is true when given with two conductors of the same type of conductive material with the same cross-sectional area?

The conductor with less resistivity will have a larger resistance
The conductor with less resistivity will have less resistance
The conductor with less length will have a larger resistance
The conductor with less length will have less resistance

A

The conductor with less length will have less resistance

195
Q

Which statement is most likely true?

An electric motor with load will draw more current compared to when no load is applied to its shaft.
An electric motor with no load will draw more current compared to when a load is applied to its shaft.
An electric motor with no load will need more voltage compared to when no load is applied to its shaft.
An electric motor with load will need more voltage compared to when no load is applied to its shaft.

A

An electric motor with load will draw more current compared to when no load is applied to its shaft.

196
Q

Which statement is most likely true?

The reactive power will always be smaller than the true power
The true power will always be smaller than the reactive power
The apparent power will always be equal to or greater than the true power
The apparent power will always be smaller than the reactive power

A

The apparent power will always be equal to or greater than the true power

197
Q

Which statement is most likely true?

The reactive power will always be greater than the true power
The true power will always be greater than the reactive power
The apparent power will always be equal to or greater than the reactive power
The apparent power will always be smaller than the reactive power

A

The apparent power will always be equal to or greater than the reactive power

198
Q

Which statement is most likely true?

Joule heating will occur when there is no current in a circuit
Joule heating will occur in systems with high voltages
Joule heating will occur in circuits with resistors
Joule heating will occur in circuits with no resistance

A

Joule heating will occur in circuits with resistors

199
Q

What will happen to a wire conductor when a current greater than the ampacity passes through it.

It will stop conducting current
Voltage will increase across the conductor
It will overheat
Nothing will happen

A

It will overheat

200
Q

What will happen to a wire conductor when a current less than the ampacity passes through it.

It will stop conducting current
Voltage will increase across the conductor
It will overheat
Nothing will happen

A

Nothing will happen

AREA 3 Tambong (1 decks)

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