Dr. Tambong Files Flashcards
- 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. Ohm’s law
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. 2
A farmhouse requires a minimum conductor size of 2 mm2 which is equivalent to AWG ____.
A. 10
B. 12
C. 14
D. 16
C. 14
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
D. AWG 8
Which type of electrical wire has a maximum operating temperature of 90 oC?
A. THW
B. RHW
C. THHN
D. THWN
C. THHN
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
C. 8
- 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
B. IR
- Ohm’s law is applicable to _____.
A. DC only
B. AC only
C. Both DC and AC
D. DC but not AC
C. Both DC and AC
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
D. Inductance
- 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. 1.72 x 10-8
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
B. Resistivity
In connecting electricity from a post to a farmhouse, a ______ wire is needed.
A. Transmission
B. Drop
C. Automotive
D. Electrical
B. Drop
. The minimum wire size for a farmhouse drop wire.
A. AWG 4
B. AWG 6
C. AWG 8
D. AWG 10
B. AWG 6
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
D. 220 Vac
. 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
B. 500
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. Solar Home System
Which one has the highest operation and maintenance cost?
A. Solar Home System
B. Hydro power plant
C. Diesel generator
D. Grid extension
C. Diesel Generator
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
D. Grid Extension
Which electricity source has no greenhouse gas emission?
A. Solar Home System
B. Hydro power plant
C. Diesel generator
D. Grid extension
A. Solar Home System
Which electricity source has the highest greenhouse gas emission?
A. Solar Home System
B. Hydro power plant
C. Diesel generator
D. Grid extension
Diesel Generator
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. Inverter
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. Microcontroller
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
C. Solenoid Valve
The name given to Arduino code files which serve as instructions to the microcontroller.
A. Program
B. Sketch
C. Control
D. App
B. Sketch
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
B. Bypass Diode
A diode needed as protection against lightning in solar installations.
A. Bypass diode
B. Shading diode
C. Blocking diode
D. Lightning diode
C. Blocking Diode
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
C. Ground
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
Timer
Which one is an integrated circuit (IC) used in instrumentation and control?
A. ES 8813
B. LM 333
C. CQ 556
D. TD 8062
B. LM 333
What voltage is appropriate in remote instrumentation?
A. 5, 7 and 9 Vdc
B. 7 Vdc
C. 9 Vdc
D. 5 Vdc
A. 5, 7 and 9 Vdc
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
C. Radio Frequency
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. Automatic Transfer Switch
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
B. Pressure Switch
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%
B. 1%
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. 4.27
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
B. PAES 422-2:2012
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
B. 4.57
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
D. 14
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. Product Recall
Which one is not a part of a vertical feed mixer?
A. Conveyor B. Hopper C. Discharge chute D. Screw
A. Conveyor
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
D. Good
As a standard, stripping efficiency of the mechanized stripping machine shall be at least
A. 80% B. 70% C. 85% D. 90%
A. 80%
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
B. 150
Known as the National Building Code of the Philippines.
A. PD 1096
B. RA 1096
C. PD 1069
D. RA 1906
A. PD 1096
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
D. Type IV
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
D. 6
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
C. 1
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
B. 1.5
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
B. 2.4
Smallest dimension in centimeters of concrete hollow blocks in the Philippines.
A. 10x20x40
B. 15x20x40
C. 20x20x40
D. 25x20x40
A. 10x20x40
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).
2.1
B. 2.4
C. 2.7
D. 2.8
C. 2.7
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
B. Septic Tank
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. Imhoff Tank
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. 10
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?
D. 30
B. 10
C. 15
D. 7
D. 7
. What percentage of concrete strength is reached at the end of the first week?
F. 70%
B. 50%
C. 33%
D. 80%
70%
The initial setting of concrete starts in the first how many hours after concrete mixing?
G. 1-1.5
B. 4-5
C. 2-3
D. 6-7.5
c. 2-3
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. Batter Board
In building construction, which step comes next to checking building permit?
A. Locating boundaries
B. Staking
C. Clearing
D. Temporary fencing
A. Locating zboundaries
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
C. Whole Plywood
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
B. Admixture
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
C. 0.44
What is the least number of longitudinal bars in a tied concrete column?
A. 2
B. 4
C. 3
D. 6
B. 4
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
C. 16mm
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
B. 10mm
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
C. 12mm
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 longitudinal bars.
X. 24
B. 16
C. 32
D. 48
B. 16
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
C. 48
