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GA IP Flashcards

1
Q

What tool is used to tighten a supply tube on a water tank supply?

A

an adjustable wrench

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2
Q

What material screws are used on a toilet flange?

A

Brass or corrosion resistant screws

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3
Q

If a toilet flange is deeper than the floor what will be used?

A

Max wax (not extension)

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4
Q

Manhole diameter of bottom

A

1M

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5
Q

Softener - stop used on upstream or downstream?

A

upstream

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6
Q

Lower boom hand signal

A
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7
Q
A

Crane downward load moment signal

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8
Q

Min air gap?

A

1” or 2x pipe diameter

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9
Q

min air break?

A

1” or 1x pipe diameter

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10
Q

Manhole cleanout size?

A

8”

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11
Q

6 urinals, their side distance is 1m, what is the c-c measurement?

A
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12
Q

Glycol add on 2 questions

A
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13
Q

Max temperature for drain pipe?

A

75 degrees C

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14
Q

Water check valve

A
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15
Q

Pipe is 100m on hot side, what is needed?

A

Re-circ

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16
Q

When using an MJ wye, you need to subtract ___”-___” than actual pipe length

A

1/4”-1/2”

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17
Q

T or F

you need two vents on an oil interceptor, one on the inlet and one on the outlet

A

True

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18
Q

Min size for oil interceptor vent?

A

1-1/4”

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19
Q

2” inlet drain to pump, what is the vent size?

A

2” min

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20
Q

oil interceptor vents min distance between outside _____mm

A

300mm

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21
Q

Input tool for air what items are required:-

a) F – Filter ( to filter particles )
b) R – Regulator ( to regulate the pressure )
c) L – Lubricant

A

F,L & R all required

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22
Q

21) Paint tool/gun/spout for what items required for air used to working this tool:-
a) F – Filter ( to filter particles )
b) R – Regulator ( to regulate the pressure )

A

F and R

c) Important: Lubricant not used on paint spray gun. B.coz oil will goes with paint and destroy the job

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23
Q

22) To stop the water for urinal/Water Closet flush valve which tool used:-

A

Flat screw Driver

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24
Q

Trap arm length maximum for 3” size pipe

A

12’

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25
Q

Single rodding 3” pipe distance =__ m

A

15m

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26
Q

BTU given, how many ton ac need:-

a) 12000 BTU = 1 ton
b) 18000 BTU = 1.5 ton
c) 24000 BTU = 2 ton

A
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27
Q

Commercial hot water tank what temp required?

A

180 f or 82.2 C

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28
Q

14” cast iron pipe, what is OD size ?

A

14” O.D size

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29
Q

Acetylene cylinder how we store long time ?

A

Ans: - Vertical and fastned.

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30
Q

Potable water what we can use?

a) Dcap
b) Dcva
c) Rpba

A
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31
Q

Which solder we can use for drinking?

A

Ans: - Lead free

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32
Q

Which solder we can use ?

a) 95/5
b) acidic

A

Ans: - 95/5

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33
Q

What is 95/5 Lead Free Plumbing Wire Solder ?

A

:- Alloy of 95% - Tin and 5 % —-

Antimony Melting Temperature: - 450 – 464 ℉

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34
Q

What is Aquasol Lead Free Plumbing Wire Solder ?

Tin - 95.75 ,

Silver - .25 %

Copper – 3 % ,

Antimony - 1%

Melting Temperature:- 416 – 454 ℉

A

Ans:- All of below:-

Tin - 95.75 ,

Silver - .25 %

Copper – 3 % ,

Antimony - 1%

Melting Temperature:- 416 – 454 ℉

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35
Q

39) Where is Venturi on Pump?

A

Ans:- on Suction line of pump or up stream side of pump.

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36
Q

What we use underground on copper joint?

a) Solder
b) brazing
c) Flaring

A

b) brazing

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37
Q

how for is toilet flange from Finish wall?

a) 11 “
b) 12 “
c) 13 “

A

b) 12 “

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38
Q

What material screws used to toilet flange :

A

Ans: - corrosion resistance ( exp. Brass )

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39
Q

When 5 Psig test done ?

A

Ans :- Cross- Connection test

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40
Q

45 X 60 roof drain area given, how many drains need ?

A

Ans:- 4 drains

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41
Q

What is the not function of the Pipe Dope?

a) Lubricating
b) union
c) Di-electric

A

Ans:- C) Di-electric

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42
Q

What we have do / maintain on solar System ?

A

Ans: - Visualise glycol check in system, check with strip, glycol add

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43
Q

When pouring the concreate on oxy pipe installed , what we we do ?

a) air filled
b) Air filling after few time
c) Sleeved
d) Use something under the concrete

A
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44
Q

Wall hung toilet how we forward little bit to front?

A

Ans:- Nut adjustment

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45
Q

Harness rope not good, what we have to do?

A

Ans:- replace with new one

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46
Q

) Boiler union leak, what we can do?

a) Silicone
b) Teflon
c) tight the union

A

Ans:- c) Tight the union

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47
Q

Which backflow device we used on irrigation?

A

Ans: - DCVA

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48
Q

Which backflow device we used on Chemical/ Toxic/ Hospital/ health safety/ food places?

A

Ans: - RPBA

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49
Q

RPBA maximum height?

A

Ans: - 1’

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50
Q

RPBA maximum height?

A

Ans:- 5’

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51
Q

) If we flushing a new piping with chlorine water, what we have to do?

A

Ans:- keep Flushing

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52
Q

What is the ph-8 level

A

Ans:- Mild alkine

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53
Q

What is Ph-12 Level means?

A

Ans:- strongly Alkline

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54
Q

1/8 fitting angle

A

Ans: 360/8 = 45 degree

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55
Q

copper bend process ?

A

Ans:- Anneal, slow cool down, bend

56
Q

what hammering in laundry, whats reason?

A

Ans:- Watter hammering.

57
Q

Bottom floor have 18,000 BTU and top have 12,000, find AC size?

A

Ans:- Total Btu = 18,000 + 12,000 = 30,000 AC Size = 30,000/12,000 = 2.5 ton

58
Q

What need to instal on air tool before supply to tool?

F – Filter ( to filter particles )

R – Regulator ( to regulate the pressure )

L – Lubricant

A

Ans:- FRL

need to install

59
Q

What we have to do if siphonic level is less in the tank?

A

Ans:- Increase the level

60
Q

What type of system used in reverse Osmosis system.

A

Ans:- Plastic

61
Q

When Energised equipment used, what need to remember?

A

Ans: Check its safe

62
Q

20’ ladder, distance from wall?

A

Ans:- 5’

63
Q

Copper and cast-iron drainage connected, what used?

a) Dielectric
b) Mech coupling
c) Transition coupling

A

Ans: - Mech Coupling

64
Q

1-1/2 abs pipe how cut?

A

Ans:- hacksaw or Pipe Cutter

65
Q

1-1/2 Copper DWV pipe how we cut?

A

Ans: - Pipe Cutter

66
Q

Sink drainage pipe, what is the max temp required?

A

Ans:- 75 degree Celsius

67
Q

What is the developed length of a 3-compartment sink

A

Ans: - 1200 mm

68
Q

What is the developed length of a 2-compartment sink?

A

Ans: - 1200 mm

69
Q

What is the floor drain length, if not vented?

A

Ans: - 450 mm ( and also if the size of trap not less than 3”, fall on drain not exceed its size)

70
Q

What is the minimum floor drain Size, if not vented?

A

Ans: - 3”

71
Q

What is the minimum floor drain Size, if vented?

A

Ans: - 2”

72
Q

What would be required to braze a 2” brass MIP onto a copper tube?

A

Ans:- High temp flux.

73
Q

Where trap primer install on faucet?

A

Ans:- Often used faucet

74
Q

To stop the water for urinal/Water Closet flush valve which tool used:-

A

Ans: - Flat screw Driver

75
Q

What is trench drain ratio?

A

Ans: 3:4

76
Q

1” pipe how many thread used?

A

Ans: - 11.5 threads

77
Q

300 EDR equal to how many MBTU ? ( 1EDR = 240 BTU. )

A

Ans:- 1 EDR = 240 BTU

300 EDR = 300 x 240 = 72000 BTU

Now, 1000 BTU = 1 MBTU

1 BTU = 1/1000 MBTU

72,000 BTU = 72,000/ 1000

= 72 MBTU

78
Q

88) Acetylene Cylinder how store long term?

A

Ans: - Fastened and Vertically store.

79
Q

14” cast iron pipe, how much O.D.?

A

Ans:- 14” O.D

80
Q

Compressor Lock-out procedure steps? Ans: - ?????

A
81
Q

Fire hydrant Siamese connection size?

A

Ans: - 65 mm or 2-1/2” Female connection.

82
Q

Why we use Siamese Y connection? .

A

Ans:- To prevent freezing

83
Q

How long cast iron pipe need to cut, to install wye?

A

Ans:- ¼” to ½” bigger size

84
Q

Water colour red in toilet tank, what’s the reason?

A

Ans:- more Iron in water OR ( only 1 came in exam )

85
Q

If water colour black in toilet tank, what’s the reason?

A

Ans: - Magnesium more in water

86
Q

How many hangers are required on 4” cast iron pipe, if used on 3M and every hub/spigot joint? ‘

a) 14
b) 15
c) 16
d) 17

A
87
Q

What is the procedure to assemble compression joint on copper tubing?

A

Ans : Cut, ream, slide nut and ferrule(also called ring or sleeve) over tubing, push tubing completely into socket then tighten nut 2.

88
Q

What is the procedure to assemble flaring joint on copper tubing?

A

Ans: - Cut the pipe , Ream the pipe, Put the nut on pipe, Flare the pipe

89
Q

When installing ABS pipes and fitting at -15°C (5°F) bracket, what is done to ensure adhesion?

a) Dilute the glue
b) Warm up the glue
c) Apply more glue
d) Apply more pressure

A

b) Warm up the glue

90
Q

What is the procedure to assemble a hub and spigot gasket joint on plastic pipe?

A

Ans : Cut Ends of Pipe Square, clean pipe and fitting, Lubricate Gasket and Spigot, then Push spigot into Hub at determined depth

91
Q

If on boiler rating written 30 PSI and 140,000 BTU which T & P valve we need?

A

Ans: - T & P valve with 30 PSI and 150,000 BTU rating ( means more rating than 140,000 BTU )

92
Q

) If a drain required 900 Square meter, how many drains are required if we have 60 X 45 metre area

A

Ans: - Area = 60 x 45 = 2700 square meter

Drains Required = 2700/ 900 = 3 drains

Or

We have length = 60 and Width = 45

Drains required for length side = 60/30 = 2

Drains required for Width side = 45/30 = 1.5 means 2

Total drains required = Length wise drains X Width wise drains = 2 x 2 = 4 drains

Note:- Please check, which answer match with given answers

93
Q

103) What would be installed in the water piping to and a from hydronic unit?
a) 1 Isolation valve, 2 Unions, 1 Vent, 1 drain
b) 2 Isolation valve, 2 Unions, 1 Vent, 1 drain
c) 2 Isolation valve, 2 Unions, 1 Vent
d) 1 Isolation valve, 2 Unions, 1 drain

A

Ans : - b) 2 Isolation valve, 2 Unions, 1 Vent, 1 drain

94
Q

104) What Steps are followed to join Bell & Spigot pipe in draining system?

A

Ans: - Cut pipe, ream outside pipe and inside spigot, clean, lubricate inside and outside of fitting, push pipe together

95
Q

what device control the intervals at which effluent is discharged to a gravity fed distribution field?

A

Ans: - Bell and Siphon

96
Q

What additional equipment is required at the END of the building plastic ( Polyethylene ) water service suitable for cold water application?

A

Ans: - Check Valve come with diaphragm Tank

97
Q

107) Plastic service pipe ENTERED at home, which valve we used?

A

Ans: - Globe valve / ball valve

98
Q

108) Steam generator when connect with hot water, which p-trap is used?
a) Thermo-dynamic
b) Thermo-static

A

Ans: - Thermo-dynamic

99
Q

109) Pipes for steam systems are commonly manufactured from ______ _____

A

carbon steel

100
Q

Soil around the trench end how far need to throw away?

A

Ans: - 1 M ( 3’ )

101
Q

Which copper joint we used underground?

a) Copper tubes shall install underground approved flare, compression and brazed.
b) . But Careful Compression fitting shall not be used underground, under a building.

A

Ans: - a) Copper tubes shall install underground approved flare, compression and brazed.

102
Q

What is minimum and maximum trap arm of 2” shower?

A

Ans:- Minimum trap arm for 2” shower = 2d = 2x2 = 4” or 100mm

Maximum trap arm for 2” shower = 2.4 Meter or 2400 mm

103
Q

113) Where would be cleanout installed ( if required ) on a 6 storey rainwater leader?
a) A cleanout is not required on leader
b) Cleanout is only required upstream size of any offset over 1.5
c) On alternative storey with a maximum separation of 7.5 M
d) Within 3m upstream of the bottom of the leader.

A

Ans: d) Within 3m upstream of the bottom of the leader.

104
Q

114) What is suction line and drive line size?

A

Ans:- Suction line = 1-1/4” Drive Line ( Discharge line ) = 1”

105
Q

We 1l/s = 31.7 fu = 900 L ,

what is the value of 2.5 l/s.

a) 79.3 FU
b) 2250 L

A

1 L/s = 31.7 Fu

2.5 L/s = 2.5 x 31.7 = 79.25 FU

And 1 L/s = 900 L 2.5 L/s = 2.5 x 900 = 2250 L

Answer is b) 2250 L

106
Q

Number of TPI ( Thread per Inch ) on different size of pipe ? a) 1/16” to 1/8” = __ TPI

b) ¼” to 3/8” = 18 TPI
c) ½” to ¾” = 14 TPI
d) 1” to 2” = 11-1/2” TPI
e) 4” & above = 8 TPI

A

27

107
Q

Number of TPI ( Thread per Inch ) on different size of pipe ? a) 1/16” to 1/8” = 27 TPI

b) ¼” to 3/8” = __ TPI
c) ½” to ¾” = 14 TPI
d) 1” to 2” = 11-1/2” TPI
e) 4” & above = 8 TPI

A

18

108
Q

Number of TPI ( Thread per Inch ) on different size of pipe ? a) 1/16” to 1/8” = 27 TPI

b) ¼” to 3/8” = 18 TPI
c) ½” to ¾” = __ TPI
d) 1” to 2” = 11-1/2” TPI
e) 4” & above = 8 TPI

A

14

109
Q

Number of TPI ( Thread per Inch ) on different size of pipe ? a) 1/16” to 1/8” = 27 TPI

b) ¼” to 3/8” = 18 TPI
c) ½” to ¾” = 14 TPI
d) 1” to 2” = ____TPI
e) 4” & above = 8 TPI

A

11-1/2”

110
Q

Number of TPI ( Thread per Inch ) on different size of pipe ? a) 1/16” to 1/8” = 27 TPI

b) ¼” to 3/8” = 18 TPI
c) ½” to ¾” = 14 TPI
d) 1” to 2” = 11.5 TPI
e) 4” & above = __ TPI

A

8

111
Q

What is a triple duty valve?

A

Ans: - One valve body that has a Check Valve, Shut off Valve and Balancing Valve.

112
Q

What is Radon?

A

Ans: - Radon is an odourless, colourless gas, invisible that is found in the soil as a naturally occurring product of uranium decay

113
Q

PVC 3” or 4” pipe used for Radon (gas).

A
114
Q

Radon mitigation pipe used from under the basement through the foundation. ( means pipe used from underground to the outside in roof.

A
115
Q

When Radon mitigation pipe install, where they install?

A

Ans: - Below the basement slab ( foundation )

116
Q

) Some part of harness tier out, what need to do?

a) Repair
b) Give to someone
c) Throw away ( not repair )

A

Ans:- c) Throw away

117
Q

Unfiltered ( Hard ) water comes in house, what’s the reason?

A

Ans: - insufficient salt ( not cleaned properly )

118
Q

15 lb of water, need to temp change 49 F to 190 F. How many BTU required?

A

Ans:- need to raise temp = 190 – 49 = 141 F

1 lb to raise 1 F required BTU = 1 BTU

15 lb to raise 1 F required BTU = 1 x 15 = 15 BTU

15 lb to raise 141 F required BTU = 15 x 141 = 2115 BTU

So, 2112 BTU required 15 lb to raise 141 degree Fahrenheit.

119
Q

Impeller works slow what’s reason?

A

Ans: - Tank have less pressure

120
Q

130) Pump not work fully ?

A

Ans: - tank water logged

121
Q

Pump need to lift up?

a) Suction line, Suction up
b) Impeller add

A

Ans: - B) Impeller add

122
Q

Pump is doing Less Cycling, what’s the reason?

A

Ans: - Leaking in suction line

123
Q

3 Zones on 3 storeys, No pressure, no heat anywhere?

A

Ans: - Expansion tank Failed

124
Q

134) Why Pump loosing Prime?
a) Plugged suction
b) Leaking Suction
c) Foot valve to low

A

Ans:- Leaking suction

125
Q

Minimum supply tube Size ?

A

Ans: - 3/8”

126
Q

Minimum inside diameter for supply pipe?

A

Ans; - 6.3 mm

127
Q

Copper to cast iron, which fitting used?

A

Ans: - Di-electric , Mech Coupling

128
Q

If the cycle of flush valve is long, how we fix that?

A

Ans: - turn the water screw anti-clock wise

129
Q

If the cycle of flush valve is short, how we fix that?

A

Ans: - turn the water screw clock wise.

130
Q

If the water continuous running on flush valve, what’s the reason?

A

Ans: - Orifice or Diaphragm blocked/ clogged

131
Q

New person at work, does not under stand work, what he have to do?

a) Check with supervisor
b) No need to work
c) Clarification from co-work
d) Gives his work to some one else

A

ans:- confused with a & c

132
Q

On water feed what install for storage tank?

a) T & P relief valve
b) Expansion tank

A

Ans: - Expansion tank

133
Q

How PVC pipe Join?

A

Ans: - PVC pipe Cut , Bevel,

134
Q

) Which welding permit required?

A

Ans: - hot work permit

135
Q

Chiller need to install, what need with this?

A

Ans: - buffer tank

136
Q

Two urinals are dual vented, find the vent size?

A

Ans: - Urinal washout type = 1.5 fu

2 Urinal washout type = 3FU D

ual Vent = 1-1/4 ( 2.5.7.1 )

666 IP (31 decks)

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