Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

AREA 3 > A3 - 1 > Flashcards

A3 - 1 Flashcards

some efficiencies, A3 from Tambong, IloIlo Exam 1

1
Q

min. req. for drying eff. for mechanical dryer

A

75%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

min. req. for heating eff. of direct-fired biomass-fueled grain dryer

A

65%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

min. req. for heat utilization eff. of direct-fired petroleum-based fuel for mechanical dryers

A

90%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

warranty period req. for mechanical grain dryers

A

6 mos

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Refrigerant: 150.3 BTU/lb; somewhat toxic; flammable

A

methyl chloride

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Refrigerant: 141.4 BTU/lb; very toxic but non-flammable

A

sulfur dioxide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

R-134a

A

tetraflouroethane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

monochlorodifluoromethane use as primary refrigerant for air conditioner

A

R-22

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

inorganic refrigerant

A

R-717

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

common refrigerant

A

freon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Refrigerant: 89.4 Btu/lb; non-toxic and flammable

A

Freon 21

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Refrigerant: 51.1Btu/hr-ft-F: Non-toxic, non-flammable, Automobile: Household

A

freon 12

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

refrigerant for air condition

A

freon 22

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

tetraflouroethane

A

R-134a

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

oldest and widely used for large installation: 475.5 BTU/lb;
highly toxic and flammable

A

ammonia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

unit for luminous flux

A

lumen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

chemical formula for ozone

A

O3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

quantity of light output by a source is measured in

A

lumen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

unit for illuminance

A

lux

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

unit of magnetomotive force

A

Ampere-turn

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

intensity of light per unit area

A

illumination

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

quantity of electricity transported in one second by a current one ampere

A

coulomb

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

unit for magnetic flux

A

weber

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

unit for luminous intensity

A

candela

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

unit for flux density

A

tesla

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

most toxic refrigerant

A

ammonia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

unit for luminous discharge

A

corona

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

rate of electrical power used or consumed

A

Watts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

unit for electrical enrgy

A

kW or W

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

unit for generator

A

kW or W

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

unit for electrical energy

A

kWh

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

unit for current (I)

A

A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

unit for true power (P)

A

W

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

unit for battery

A

Amp-hr

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

Unit for apparent power (S)

A

Volt-Amp (VA)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

unit for alternating current (AC)

A

KVA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

unit for reactive power (Q)

A

VAR, Volt-Amp-Reactive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

unit for inductance (L)

A

henry (H)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

unit for AC with capacitor

A

KVA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

unit for admittance (Y)

A

siemens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

unit for capacitance (C)

A

Farad (F)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

unit for susceptance (S)

A

siemens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

unit for resistance (R)

A

ohm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

unit for conductance (G)

A

mho, siemens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

unit for impedance (Z)

A

ohm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

reciprocal of resistance

A

conductance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
47
Q

unit for resonance frequency

A

Hertz (Hz)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
48
Q

unit for quantity of electricity

A

Coulomb (C)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
49
Q

unit when specifying intensity of light needed for seeing

A

foot-candle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
50
Q

intensity of light at a point is measured in units of

A

foot-candle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
51
Q

amount of light flux density

A

footcandle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
52
Q

units for throw-in type thresher

A

peg tooth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
53
Q

power system that usees morethan 1 energy sources such as solar, wind, and biogas

A

hybrid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
54
Q

part of aerogenerators in wind farms that converts rotational movement to AC electricity

A

alternator

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
55
Q

application of electricity in rural areas including the home, farm, and farmstead

A

rural electrification

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
56
Q

current rating of AWG No. 10 wire

A

30 amp

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
57
Q

standard size of drop wire (post to building wire) for farmhouses and households

A

5.5 mm2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
58
Q

how many mm is AWG No. 10 wire

A

5.5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
59
Q

solar irradiance at the earth’s surface

A

1000 W/m2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
60
Q

solar irradiance multiplied by its duration is called

A

solar insulation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
61
Q

in the phil. and most SE asia, the daily solar energy or insulation is about

A

5 kWh/m2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
62
Q

normal freeboard percentage for water tanks and open channels

A

10-20%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
63
Q

shape of a concrete canal that needs more reinforcing bars at the lower part of its wall

A

circular

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
64
Q

for class A mix, give the bags of 40-kg cement needed per m3 of concrete

A

9

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
65
Q

what is the proper mix class for solid concrete open channel bed and walls

A

class A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
66
Q

what concrete canal cross-sectional shape has its sides serving as soil retaining wall

A

rectangular

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
67
Q

the equivalent amount paid by the world bank for carbon emission reduction projects

A

carbon credit value

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
68
Q

best type of biogas plant for large animal farms having effluents with low volatile solids

A

covered lagoon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
69
Q

plastic sheet for constructing balloon and bed lining in covered lagoon biogas plant

A

high density polythylene (HDPE)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
70
Q

by hoe many times is methane destructive to the environment than carbon dioxide

A

21 times

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
71
Q

flammable gas derived from anaerobic fermentation of any organic matter especially animal manure or manure-biomass mixture

A

biogas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
72
Q

estimated proportion of methane in biogas for digesters using 1:1 water-manure ratio

A

60%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
73
Q

water and manure mixture

A

slurry

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
74
Q

color of biogas flame during daytime in outdoor areas

A

colorless

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
75
Q

estimated proportion of carbon dioxide in biogas for digesters using 1:1 water-manure ratio

A

40%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
76
Q

estimated biogas produced per kg cow manure for 25-day hydraulic retention time

A

0.03 m3/kg

77
Q

recommended manure-water ratio by volume for economical biogas production

A

1:1

78
Q

the metal-corrosive component of biogas in small amount which smells like a rotten egg

A

hydrogen sulfide

79
Q

modes of heat transfer where the transmission occurs through substance from molecule to molecule

A

conduction

80
Q

heating value of coco shell

A

17,800 kJ/kg

81
Q

it embodies the first agricultural engineering law in the phil

A

RA 3927

82
Q

amount of heat needed to increase or decrease 1 lb of water to 1 F

A

specific heat

83
Q

agent conduct heat from refrigerated coils and release outside air

A

refrigerant

84
Q

contract in which the agreement of parties is inferred from their conduct

A

implied contract

85
Q

basil electrical element which prevents the current from changing instantly

A

inductor

86
Q

instrument simplest and reliable difference of fluid height in the tube

A

manometer

87
Q

main cause of air pollution as a result of combustion of fuel

A

carbon dioxide

88
Q

amount of heat added or removed to cause change of state without changing temperature

A

latent heat

89
Q

standard gross heating value of gasoline

A

17,320 kJ/kg

90
Q

agricultural engineering permit is an ancillary permit supplementary to building permit to be signed and sealed by a registered agricultural engineer. the documents to be signed include the ff except for:

  1. farm products packing house
  2. hatcheries
  3. dams and spillways
  4. slaughter house
A
  1. dams and spillways
91
Q

when resistance of a certain circuit is zero or almost zero, the circuit is called

A

shorted

92
Q

heating value of rice hull

A

14,000 kJ/kg

93
Q

amount of heat added or removed measured in change of temperature without changing state

A

sensible heat

94
Q

amount of heat needed to increase/raise 1lb of substance to 1F

A

specific heat

95
Q

metal particles blown away from the welding arc

A

splatter

96
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

97
Q

based on the 2009 phil. electrical code, what is the minimum conductor size in mm2 for a voltage rating of 0-2000 V when using copper wire

A

2 mm2

98
Q

aa farmhouse requires a minimum conductor size of 2 mm2 which is equivalent to AWG #

A

AWG # 14

99
Q

AWG # _____ should not be used in houses, except for drop wires

A

AWG # 16

100
Q

common household wires

A

AWG # 10, 12, 14

101
Q

AWG # 14 has ______ conductor size

A

2.08 mm2

102
Q

which electrical wire has the biggest cross-sectional area
1. AWG 16
2. AWG 14
3. AWG 8
4. AWG 6

A
  1. AWG 6
103
Q

which type of wire has the maximum operating temperature of 90 deg
1. THW
2. RHW
3. THHN
4. THWN

A
  1. THHN
104
Q

based on the phil. electrical code, what is the minimum conductor size in mm2 for a voltage rating of 2001 - 8000 V when using copper, aluminum, or copper-clad aluminum wire?

A

8

105
Q

if V is voltage, I is current, and P is power, according to ohm’s law, V is equal to

A

V = IR

106
Q

ohm’s law is applicable to

A

both AC and DC

107
Q

ohm’s law applies to both AC and DC circuits as long as mutual _____ of the circuit is considered

A

inductance

108
Q

the resistivity of annealed copper in ohm meter at 20 deg C

A

1.72 x 10^ -8

109
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

resistivity

110
Q

in connecting electricity from a post to a farmhouse, a ____ wire is needed

A

drop wire

111
Q

minimum wire size for a farmhouse drop wire

A

AWG 6

112
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 pen?

A

220 Vac

113
Q

based on PAES 419:2000, the recommended lighting intensity in lux (lumen/mm2) for fruit and vegetable processing plant are:

100 for outside bldg
200 for general indoor locations, &
___ for working tables

A

500

114
Q

a poultry layer area requires a brightness of 1600 lumens. what is the wattage of a day-light color LED bulb that shall be used

A

100W daylight-color LED

115
Q

in off-grid farmhouse electrification, which one has the lowest operation and maintenance cost

A

solar home system

116
Q

highest operation and maintenance

A

diesel generator

117
Q

in off-grid brgy electrification located 3 km from electricity grid, what is recommended

A

grid extension

118
Q

what electricity source has the highest gas emission

A

diesel generator

119
Q

a 950-kW cassava flour processing plant is to be powered using hydro. what electricity source shall be utilized

A

minihydro

120
Q

the resistance of a human body varies from about

______ when dry, and about
______ when wet

A

500,000 ohms
300 ohms

121
Q

hydropower: large scale

A

> 100 MW

122
Q

hydropower: medium scale

A

10 MW - 100 MW

123
Q

hydropower: small scale

A

< 10 MW

124
Q

hydropower: small scale: small

A

1 MW - 10 MW

125
Q

hydropower: small scale: mini

A

100 kW - 1 MW

126
Q

hydropower: small scale: micro

A

5 kW - 100 kW

127
Q

hydropower: small scale: pico

A

<5 kW

128
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 a LED, turning on a solenoid valve, or publishing something online

A

microcontroller

129
Q

an arduino microcontroller is used to activate mist sprinkler system for 10 min 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

solenoid valve

130
Q

the name given to arduino code files which serve as instructions to the microcontroller

A

sketch

131
Q

part of solar module needed such that solar charging is continuous at slower rate when partially shaded by trees

A

bypass diode

132
Q

a diode needed as protection against lighting in solar installation

A

blocking diode

133
Q

the common pin, made as the pair to other pins, integrated circuits (IC)

A

ground

134
Q

an integrated circuit (IC) included as an important part of electronic instrumentation for gathering speed and discharge real-time data

A

timer

135
Q

integrated circuit (IC) used in instumentation and control

A

LM 333

136
Q

voltage appropriate in remote instrumentation

A

5, 7, and 9 Vdc

137
Q

data transmission to a remote, unelectrified, and line-of-sight point is the best done through _____

A

radio frequency

138
Q

in automatic control of irrigation dam gates, what switch is useful in the instrumentation?

A

automation transfer switch

139
Q

switch for automatic pump motor control of sealed water tanks in drip irrigation systems

A

pressure switch

140
Q

under PAES 418:2002, washing of tomato is done by using ___ chlorox solution applied by dipping, spraying, with a damp cloth then drying the fruit before packing

A

1%

141
Q

based on PAES 419:2000, the recommended optimum stack height in meters for storage of both paddy and rice grains

A

4.27 m

142
Q

what standard shall be followed in constructing large-scale poultry dressing/s slaughtering plants?

A

PAES 422-2:2012

143
Q

based on PAES 419:2000, the recommended optimum stack height for storage of wheat, barley, and maize grains

A

4.57m

144
Q

PAES 419:2000 requires the food grains stored in a warehouse for bagged storage area in the range of 12% to ____ moisture content prior to storing

A

14%

145
Q

the phil. standard for grading and classification of paddy and milled rice grains

A

PNS/BAFS 290:2019

146
Q

the phil. standard for code of practice and postproduction of organic milled rice

A

PNS 42:2019

147
Q

the phil. standard for maximum residue limits (MRLs) of pesticides in rice

A

PNS 162:2015

148
Q

the phil. general standard for contaminants and toxins in food and feed

A

PNS 194:2017

149
Q

industrial bottling of virgin coconut oil prints a batch number. what is the main purpose of this batch number?

A

product recall

150
Q

a feed mixer tested to have mixing coefficient of variation of 10% - 15% is rated as ____

A

good

151
Q

as a standard, stripping efficiency of the mechanized stripping machine shall be at least

A

80%

152
Q

as prescribed is PAES 419:2000, in constructing 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

150 mm

153
Q

known as the national building code of the phil

A

PD 1096

154
Q

type of building that is made of steel, iron, concrete, or masonry construction

A

type IV

155
Q

type of building that shall be of masonry and wood construction

A

type III

156
Q

type of building that shall be four-hour fire-resistive throughout and the structural elements shall be of steel, iron, concrete, or masonry construction

A

type V

157
Q

type of building that is made of wood construction with protective fire-resistant materials and one-hour fire-resistive throughout

A

type II

158
Q

type of building that is made of wood construction. the structural elements may be any of the materials permitted by the code

A

type I

159
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

6m

160
Q

under PAES 4218:2002, in constructing a primary processing plant for fresh fruit and vegetable, the windowsill shall be at least ____m from the finished floor line

A

1m

161
Q

under PAES 418:2002, in constructing a primary processing plant for fresh fruit and vegetable, the doors shall have a minimum width of _____

A

1.5 m

162
Q

habitable rooms provided with artificial ventilation shall have ceiling heights of not less than ___m measured from the floor to the ceiling (PD 1096)

A

2.4 m

163
Q

smallest dimension in cm of concrete hollow blocks in the phil.

A

10 x 20 x 40

164
Q

for buildings of more than 1-storey, the minimum ceiling height of the first-storey shall be ___m 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

A

2.7 meters

165
Q

all buildings located in a reas where there is no sanitary sewerage system shall dispose their sewage to imhoff tank or ______ and subsurface absorption field (PS 1096)

A

septic tank

166
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

167
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 days

168
Q

as provided in the building code, when occuring concrete made from ordinary portland cement, the concrete be maintained above 10 deg C and in moist condition for the first how many days at least?

A

7 days

169
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

3 days

170
Q

what percentage of concret strength is reached at the end of the first week

A

70%

171
Q

the initial setting of concrete starts in the first how many hours after concrete mixing?

A

2-3 hours

172
Q

when using 0.75 inch nominal maximum size of coarse aggregate, what is the estimate percentage of air content by volume in concrete?

A

4-8 %

173
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

0.48

174
Q

for 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

0.44

175
Q

the cross-sectional area in mm of standard 16 mm diameter reinforcing bar

A

113.1 mm2

176
Q

in a wall footing, the horizontal steel reinforcing is said to be normally adequate if steel cross-sectional area relative to concrete cross-sectional area is ___

A

0.2% - 0.3%

177
Q

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

A

4

178
Q

what is the maximum diameter of longitudinal bars in a tied concrete column

A

16 mm

179
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

10 mm

180
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

12 mm

181
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 longitudinal bars

A

16 times

182
Q

based on ACI code, the maximum spacing lateral tie in a tied concrete column should not be more than ___ times the diameter of the lateral ties

A

48 times

183
Q

if an additional resistance is added to a series RL circuit, the overall power factor of the circuit will ______

A

increase

184
Q

For the same illumination, what lamp has lower wattage and power consumption?

A

LED

185
Q

In photovoltaic systems, what is the component used to regulate the main electricity flow?

A

Battery Control Unit

186
Q

What is the standard system voltage for solar home systems?

A

12 V

187
Q

Name the electrical device used to transform DC to AC electricity.

A

converter

188
Q

In biogas-fired electricity generators, what is device used in tandem with the generator for efficient burning of excess biogas to reduce greenhouse gas emission?

A

Flare

189
Q
A

AREA 3 (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions