PLUMBER- PAGE 1
PLUMBER-PAGE 1- MCQs
1:-The water closet having an integral part of trap S and P type out let have a water seal size of .....
A:-25 mm B:-50 mm C:-75 mm D:-100 mm
Ans: C
2:-Which type of tap is used for hot and cold water pipe line in a system .....?
A:-Stop cock B:-2 or 3 in mixer tap C:-one in one mixer D:-Direct mix of the O H T
Ans: B
3:-Co|larjoint shall be finished of with a fillet sloping at a surface angle of .....
A:-15° B:-25° C:-35° D:-45°
Ans: D
4:-Sewer pipe may have to be laid under the condition of .....
A:-Cushion B:-Trench C:-Length D:-Threading
Ans: B
5:-A device used in kitchens serving hotels dinning rooms club houses and restaurants is .....
A:-Grease basin B:-Yard basins C:-Garage basin D:-Oi| catch basin
Ans: A
6:-In a hot water system expansion / vent pipes are installed on the cylinder and boiler because they.....
A:-Prevent air locks B:-Stop build up of lime C:-Supply cold water D:-Re|ease excess steam and water
Ans: D
7:-The pump attached with impeller and pump is .....
A:-Mono block pump B:-Jet pump C:-Air lift pump D:-Rotary pump
Ans: A
8:-For cutting thin tubing the most suitable pitch of the hack saw blade is .....
A:-1.8 mm B:-0.8 mm C:-1.4 mm D:-.1 mm
Ans: B
9:-The hose pipe for the oxygen line is .....
A:-B|ack B:-Maroon C:-Red D:-Brown
Ans: A
10:-Dual systems of distribution means .....
A:-Continues supply system B:-pumping and intermittent system
C:-Gravity and Pumping system D:-Gravity and continues system
Ans: C
11:-The space between the teeth of a handsaw is called .....
A:-Gullet B:-Kert C:-Flank D:-Pitch
Ans: A
12:-Which bond is commonly used for .....
A:-Stretcher bond B:-Header bond C:-F|emish bond D:-Eng|ish bond
Ans: D
13:-The clearance angle of a drill is .....
A:-3° to 5° B:-8° to 12° C:-12° to 20° D:-15° to 20°
Ans: B
14:-What is usually the included angle of the conical point of a scriber .....
A:-15° B:-30° C:-60° D:-90°
Ans: A
15:-One pascal is equal to .....
A:-1 Newton/mm2
B:-1 Newton/m2
C:-1 Newton/cm2
D:-1 Newton/dm2
Ans: B
16:-Ferrous metal is an alloy of .....
A:-iron and silicon B:-carbon and silicon C:-iron and carbon D:-manganese and silicon
Ans: C
17:-|n which pipes are used in water providing plants .....
A:-C.I. Pipe B:-G.I. Pipe C:-A.C. Pipe D:-S.W. Pipe
Ans: A
18:-Cast iron is used for manufacturing machine beds because .....
A:-|t is heavy in weight B:-It can resist more compressive stress C:-It is a cheaper metal D:-|t is a brittle metal
Ans: B
19:-A device installed in a drainage system to prevent reverse flow is .....
A:-back water valve B:-back flow preventer C:-back siphonage D:-back vent pipe
Ans: A
20:-|n metric micro meters what is the pitch of the spindle thread
A:-0.1 mm B:-0.5 mm C:-0.2 mm D:-0.01 mm
Ans: B
21:-What is the term generally employed for a piece of pipe which is threaded on both ends and less than 12 inches long?
A:-coup|ing B:-nipp|e C:-union D:-p|ugs
Ans: A
22:-Pipe wrench is used for pipes of diameter.....
A:-|ess than 15 mm B:-more than 150 mm C:-50 mm to 150 mm D:-15 mm to 50 mm
Ans: D
23:-|f the globe valve begins to leak between the packing nut and valve steam .....
A:-g|and nut to be replaced B:-packing to be replaced C:-va|ve steam to be replaced D:-Bonnet to be replaced
Ans: B
24:-the lower most level or surface of a sewer is known as .....
A:-invert B:-bedding C:-benching D:-drain
Ans: A
25:-What process is used to remove permanent hardness in water ….
A:-purification process B:-coagu|ation process C:-base exchange process D:-sedimentation process
Ans: C
26:-Dug wells are also known as .....
A:-draw we||s B:-tube we||s C:-driven we||s D:-artesian wells
Ans: A
27:-What should be done to remove tapped air in centrifugal pump .....
A:-packing B:-washing C:-use booster pump D:-priming
Ans: D
28:-What is provided in elevated storage reservoir for circulation of air .....
A:-manhole
B:-ventilator
C:-float gauge
D:-over flow pipe
Ans: B
29:-What type of bacteria treats waste in percolation area?
A:-fungi B:-anaerobic C:-aerobic D:-lime Ans: C
30:-The cistern which is operated by a chain is called .....
A:-Ba|| type cistern B:-Be|| type cistern
C:-Pu|| type cistern D:-Push type cistern
Ans: B
31:-Hardness that cannot be removed by boiling the water is called
A:-difficu|t hardness B:-stiff hardness
C:-permanent hardness D:-tough hardness
Ans: C
32:-Galvanized iron is coated with .....
A:-Copper B:-Lead C:-Zinc D:-Tin
Ans: C
33:-What you should be sure you have in plenty before considering buying a solar water heater
A:-abundant sunshine B:-very hot water C:-intermittent rain D:-a|| of the above
Ans: A
34:-There are two primary chemicals used to purify water namely .....
A:-iodine and chlorine B:-sodium and chlorine C:-chlorine and fluorine D:-fluorine and iodine
Ans: A
35:-Which material is used forjoining C.I. Pipes? A:-Lead and cement B:-Lead and lead wool C:-Zinc and lead wool D:-Copper and hemp yarn Ans: B
36:-What is used at the junction of house sewer and municipal sewer? A:-nahni trap B:-P. trap C:-|ntercepting trap D:-S. trap Ans: C
37:-What is used to overcome siphonic action A:-anti siphonage pipe B:-vent pipe C:-coup|er D:-vent cowl Ans: A
38:-What happens if cast iron pipes are coated with cool tar
A:-|oose strength B:-prevent corrosion
C:-dos not sag D:-dos not fig
Ans: B
39:-Which component in gully trap is used to prevent gases from entering waste |ine A:-air sea| B:-C.I. cover C:-water sea| D:-C.|. grating Ans: C
40:-Which accessories is used to change the direction flow in the pipe ..... A:-water meter B:-pipe C:-cocks D:-fittings Ans: D
41:-The pipe fitting used to connect a service pipe to a water main is called as ..... A:-adjusting nut B:-ferru|e C:-coup|ing D:-air valve Ans: B
42:-|n septic tank the ventilation pipe usually provided is of ..... A:-100 mm dia B:-150 mm dia C:-75 mm dia D:-50 mm dia Ans: C
43:-Flogging is the method of generating a mist for the application of ..... A:-spray B:-soak C:-sanitizers D:-fi|tering Ans: C
44:-Gate valve is one of the most common valves used in the main supply lines to the ..... A:-venti|ating |ine B:-water supply system C:-back flow system D:-drainage system Ans: B
45:-Air lift pump is installed to draw more water from the deep well the pump is operated by ..... A:-secondary electrical sources B:-acute air C:-compressed air D:-primary electrical sources Ans: C
46:-White metal is an alloy of A:-copper, lead, tin and antimony B:-copper, zinc and tin C:-copper, zinc, tin and Antimony D:-copper and tin Ans: C
47:-Dresser coupling and Victaulic joint basica||y are ..... A:-back push joint B:-chemica| joint C:-mechanica| joint D:-adhesive joint Ans: C
48:-Which one of the following a||oys can resist salt water corrosion .....
A:-zinc a||oy B:-gun metal C:-nicke| chrome a||oy D:-brass Ans: A
49:-The system of water distribution which is suited to a city growing irregularly is ..... A:-grid iron system B:-radia| system C:-ring system D:-tree system Ans: D
50:-Which tool is used for heating while carrying out soldering ..... A:-torch lamp B:-b|ow lamp C:-ho|ding lamp D:-winding lamp Ans: B
A:-25 mm B:-50 mm C:-75 mm D:-100 mm
Ans: C
2:-Which type of tap is used for hot and cold water pipe line in a system .....?
A:-Stop cock B:-2 or 3 in mixer tap C:-one in one mixer D:-Direct mix of the O H T
Ans: B
3:-Co|larjoint shall be finished of with a fillet sloping at a surface angle of .....
A:-15° B:-25° C:-35° D:-45°
Ans: D
4:-Sewer pipe may have to be laid under the condition of .....
A:-Cushion B:-Trench C:-Length D:-Threading
Ans: B
5:-A device used in kitchens serving hotels dinning rooms club houses and restaurants is .....
A:-Grease basin B:-Yard basins C:-Garage basin D:-Oi| catch basin
Ans: A
6:-In a hot water system expansion / vent pipes are installed on the cylinder and boiler because they.....
A:-Prevent air locks B:-Stop build up of lime C:-Supply cold water D:-Re|ease excess steam and water
Ans: D
7:-The pump attached with impeller and pump is .....
A:-Mono block pump B:-Jet pump C:-Air lift pump D:-Rotary pump
Ans: A
8:-For cutting thin tubing the most suitable pitch of the hack saw blade is .....
A:-1.8 mm B:-0.8 mm C:-1.4 mm D:-.1 mm
Ans: B
9:-The hose pipe for the oxygen line is .....
A:-B|ack B:-Maroon C:-Red D:-Brown
Ans: A
10:-Dual systems of distribution means .....
A:-Continues supply system B:-pumping and intermittent system
C:-Gravity and Pumping system D:-Gravity and continues system
Ans: C
11:-The space between the teeth of a handsaw is called .....
A:-Gullet B:-Kert C:-Flank D:-Pitch
Ans: A
12:-Which bond is commonly used for .....
A:-Stretcher bond B:-Header bond C:-F|emish bond D:-Eng|ish bond
Ans: D
13:-The clearance angle of a drill is .....
A:-3° to 5° B:-8° to 12° C:-12° to 20° D:-15° to 20°
Ans: B
14:-What is usually the included angle of the conical point of a scriber .....
A:-15° B:-30° C:-60° D:-90°
Ans: A
15:-One pascal is equal to .....
A:-1 Newton/mm2
B:-1 Newton/m2
C:-1 Newton/cm2
D:-1 Newton/dm2
Ans: B
16:-Ferrous metal is an alloy of .....
A:-iron and silicon B:-carbon and silicon C:-iron and carbon D:-manganese and silicon
Ans: C
17:-|n which pipes are used in water providing plants .....
A:-C.I. Pipe B:-G.I. Pipe C:-A.C. Pipe D:-S.W. Pipe
Ans: A
18:-Cast iron is used for manufacturing machine beds because .....
A:-|t is heavy in weight B:-It can resist more compressive stress C:-It is a cheaper metal D:-|t is a brittle metal
Ans: B
19:-A device installed in a drainage system to prevent reverse flow is .....
A:-back water valve B:-back flow preventer C:-back siphonage D:-back vent pipe
Ans: A
20:-|n metric micro meters what is the pitch of the spindle thread
A:-0.1 mm B:-0.5 mm C:-0.2 mm D:-0.01 mm
Ans: B
21:-What is the term generally employed for a piece of pipe which is threaded on both ends and less than 12 inches long?
A:-coup|ing B:-nipp|e C:-union D:-p|ugs
Ans: A
22:-Pipe wrench is used for pipes of diameter.....
A:-|ess than 15 mm B:-more than 150 mm C:-50 mm to 150 mm D:-15 mm to 50 mm
Ans: D
23:-|f the globe valve begins to leak between the packing nut and valve steam .....
A:-g|and nut to be replaced B:-packing to be replaced C:-va|ve steam to be replaced D:-Bonnet to be replaced
Ans: B
24:-the lower most level or surface of a sewer is known as .....
A:-invert B:-bedding C:-benching D:-drain
Ans: A
25:-What process is used to remove permanent hardness in water ….
A:-purification process B:-coagu|ation process C:-base exchange process D:-sedimentation process
Ans: C
26:-Dug wells are also known as .....
A:-draw we||s B:-tube we||s C:-driven we||s D:-artesian wells
Ans: A
27:-What should be done to remove tapped air in centrifugal pump .....
A:-packing B:-washing C:-use booster pump D:-priming
Ans: D
28:-What is provided in elevated storage reservoir for circulation of air .....
A:-manhole
B:-ventilator
C:-float gauge
D:-over flow pipe
Ans: B
29:-What type of bacteria treats waste in percolation area?
A:-fungi B:-anaerobic C:-aerobic D:-lime Ans: C
30:-The cistern which is operated by a chain is called .....
A:-Ba|| type cistern B:-Be|| type cistern
C:-Pu|| type cistern D:-Push type cistern
Ans: B
31:-Hardness that cannot be removed by boiling the water is called
A:-difficu|t hardness B:-stiff hardness
C:-permanent hardness D:-tough hardness
Ans: C
32:-Galvanized iron is coated with .....
A:-Copper B:-Lead C:-Zinc D:-Tin
Ans: C
33:-What you should be sure you have in plenty before considering buying a solar water heater
A:-abundant sunshine B:-very hot water C:-intermittent rain D:-a|| of the above
Ans: A
34:-There are two primary chemicals used to purify water namely .....
A:-iodine and chlorine B:-sodium and chlorine C:-chlorine and fluorine D:-fluorine and iodine
Ans: A
35:-Which material is used forjoining C.I. Pipes? A:-Lead and cement B:-Lead and lead wool C:-Zinc and lead wool D:-Copper and hemp yarn Ans: B
36:-What is used at the junction of house sewer and municipal sewer? A:-nahni trap B:-P. trap C:-|ntercepting trap D:-S. trap Ans: C
37:-What is used to overcome siphonic action A:-anti siphonage pipe B:-vent pipe C:-coup|er D:-vent cowl Ans: A
38:-What happens if cast iron pipes are coated with cool tar
A:-|oose strength B:-prevent corrosion
C:-dos not sag D:-dos not fig
Ans: B
39:-Which component in gully trap is used to prevent gases from entering waste |ine A:-air sea| B:-C.I. cover C:-water sea| D:-C.|. grating Ans: C
40:-Which accessories is used to change the direction flow in the pipe ..... A:-water meter B:-pipe C:-cocks D:-fittings Ans: D
41:-The pipe fitting used to connect a service pipe to a water main is called as ..... A:-adjusting nut B:-ferru|e C:-coup|ing D:-air valve Ans: B
42:-|n septic tank the ventilation pipe usually provided is of ..... A:-100 mm dia B:-150 mm dia C:-75 mm dia D:-50 mm dia Ans: C
43:-Flogging is the method of generating a mist for the application of ..... A:-spray B:-soak C:-sanitizers D:-fi|tering Ans: C
44:-Gate valve is one of the most common valves used in the main supply lines to the ..... A:-venti|ating |ine B:-water supply system C:-back flow system D:-drainage system Ans: B
45:-Air lift pump is installed to draw more water from the deep well the pump is operated by ..... A:-secondary electrical sources B:-acute air C:-compressed air D:-primary electrical sources Ans: C
46:-White metal is an alloy of A:-copper, lead, tin and antimony B:-copper, zinc and tin C:-copper, zinc, tin and Antimony D:-copper and tin Ans: C
47:-Dresser coupling and Victaulic joint basica||y are ..... A:-back push joint B:-chemica| joint C:-mechanica| joint D:-adhesive joint Ans: C
48:-Which one of the following a||oys can resist salt water corrosion .....
A:-zinc a||oy B:-gun metal C:-nicke| chrome a||oy D:-brass Ans: A
49:-The system of water distribution which is suited to a city growing irregularly is ..... A:-grid iron system B:-radia| system C:-ring system D:-tree system Ans: D
50:-Which tool is used for heating while carrying out soldering ..... A:-torch lamp B:-b|ow lamp C:-ho|ding lamp D:-winding lamp Ans: B
51:-Rubber ring joints can be provided in the pipe line to .....
A:-water free sea| B:-water tight seal C:-water peel sea| D:-none of the above
Ans: B
52:-What is the use of hand taps .....
A:-interna| threads B:-externa| threads C:-interna| gauge D:-interna| drilling
Ans: A
53:-In an acetylene cylinder the acetylene is dissolved in .....
A:-carbon dioxide B:-water C:-acetone D:-mercury
Ans: C
54:-Which grade G | pipe is used for water supply.....
A:-yellow B:-blue C:-red D:-brown Ans: B
55:-The angle of metric thread is .....
A:-60 degree B:-55 degree C:-90 degree D:-47 degree
Ans: A
56:-What are the diameter of A C pipes available in .....
A:-4 cm to 100 cm
B:-5 cm to 100 cm
C:-2 cm to 100 cm
D:-6 cm to 100 cm
Ans: C
57:-Name the tool used to check internal pipe threads .....
A:-pipe taps B:-ring gauge C:-pipe plug threads D:-pipe bush
Ans: C
58:-When pressure test can be started in solvent welder PVC pipe line
A:-after 24 hours B:-after 12 hours C:-after 5 hours D:-after 36 hours
Ans: A
59:-Where are collar joints used .....
A:-sma||er diameter C I pipe B:-small diameter A C pipe
C:-small diameter 5 W pipe D:-small diameter P V C pipe Ans: B
60:-Which is the place preferred to fix scour valve .....
A:-lowest point in pipe line B:-higher point in pipe line
C:-straight line in pipe line D:-none of the above Ans: A
61:-Spindle of gate valve rotates without closing due to .....
A:-spind|e thread badly worn-out B:-spind|e is bend C:-g|and nut loose D:-defective packing Ans: A
62:-What is the size of manhole generally constructed within compound for house drainage ..... A:-90 x 70 cm B:-90 x 80 cm C:-90 x 60 cm D:-90 x 90 cm Ans: B
63:-Name the valve is used to regulate the pressure in pipe line ..... A:-re|ief valve B:-need|e valve C:-gate valve D:-check valve Ans: A
64:-what is the size of frog in brick ..... A:-100 mm length x 40 mm width x 10 to 20 mm depth B:-100 mm length x 30 mm width x 10 mm to 25 mm depth C:-100 mm length x 50 mm width x 10 mm to 15 mm depth D:-none of the above Ans: A
65:-Cross cut chisel is used for .....
A:-chipping excess metal B:-curved grooves C:-key ways D:-corner
Ans: C
66:-Which types of pipes can be cut easily by pipe cutter .....
A:-S.W. pipe B:-C.I. Pipe C:-A.C. Pipe D:-G.I. Pipe
Ans: D
67:-Name the apparatus used for testing slump .....
A:-sand cone test B:-Mud cone test C:-S|ump cone test D:-None of the above
Ans: C
68:-Which method of casting C.I. pipes gives good result .....
A:-sand casting B:-mud casting C:-centrifuga| casting D:-none of the above
Ans: C
69:-What is the range of SW. pipes available in the market .....
A:-100 to 600 mm B:-100 to 300 mm C:-100 to 180 mm D:-100 to 700 mm
Ans: A
70:-Which side of mixing tap hot water line to be connected ..... A:-right side B:-Left side C:-Midd|e side D:-Corner side Ans: B
71:-How to prevent algae growth in OH. tank? A:-copper sulphate B:-a|uminium sulphate C:-|ead powder D:-b|eaching powder Ans: A
72:-What is check the alignment and condition of inside the pipe .....
A:-smoke test B:-mirror test C:-air test D:-hydrau|ic test Ans: B
73:-How many days curing is required for SW. pipe joints .....
A:-7 days B:-2 days C:-5 days D:-3 days
Ans: A
74:-What is the size of flush pipe for low level flushing cistern
A:-32 mm B:-40 mm C:-25 mm D:-50 mm
Ans: B
75:-What causes the siphonic action in soil pipe .....
A:-leaked air B:-foul air C:-sucked air D:-air diffuser
Ans: C
76:-What instrument is used while conducting air test in pipe line .....
A:-manometer B:-vinometer C:-thermometer D:-tint meter
Ans: A
77:-State the size of ball used in ba|| test .....
A:-13 mm less than inside diameter of pipe B:-12 mm less than inside diameter of pipe
C:-11 mm less than inside diameter of pipe D:-10 mm less than inside diameter of pipe
Ans: A
78:-What is the use of NAHNI trap .....
A:-to co||ect waste water from bath room B:-to co||ect rain water
C:-to collect 50“ pipe from sewage D:-to collect raw water from river
Ans: A
79. The minimum height between the top of the water closet pan and the underside of the high level flashing cistern is (A) 200 cm (B) 125 cm (C) 100 cm (D) 30 cm
Ans: B
80. The trap which prevent the self syphonage is (A) Anti-D-Trap (B) Greese trap (C) Bottle trap (D) S trap
Ans: A
81. Rotary pumps are easily repair. Why ?
(A) No valve (B) 2 valve (C) One suction (D) Two delivery
Ans: A
82. What instrument is used while conducting air test in pipe ? (A) Manometer (B) Phonoscope (C) Stethoscope (D) Pyrometer
Ans: A
83. How much is the weight of 15 mm C.P. pillar tap ? (A) 650 gm (B) 750 gm (C) 250 gm (D) 375 gm
Ans: A
84. Which side of the mixing tap hot water line to be connected ? (A) On right side (B) Left side (C) Middle (D) Lower side
Ans: B
85. Popup waste is replacement of what ? (A) Rubber plug of chain (B) Floating paper (C) Towel (D) Cotton
Ans: A
86. ______ is an appliance for heating water in bathroom. (A) Sink (B) Geyser (C) Stove (D) Wash basin
Ans: B
87. Which one of the following receives human excreta directly from the user ? (A) Urinal (B) Wash basine (C) Water closet (D) Bidet
Ans: C
88. The minimum horizontal distance between a ground water well and septic tank should be (A) 15 m (B) 7 m (C) 10 m (D) 12 m
Ans: A
89. ______ pump is used for pumping sewage. (A) Airlift pump (B) Rotary pump (C) Centrifugal pump (D) Submersible pump
Ans: C
90. The slope provided for self-cleaning velocity to 150 mm diameter drain pipe (A) 1 : 40 (B) 1 : 60 (C) 1 : 90 (D) 1 : 30
Ans: B
91. Important part of water closet is (A) Pan (B) Foot rest (C) Trap (D) Flush tank
Ans: C
92. S.W.H. means : (A) Solar Water Heating (B) Sky Wind Heating (C) Standard Wind Heating (D) Solar Wind Heating
Ans: A
93. The amount of heat required to raise the temperature of one pound of water through 1 degree F at Sea level is (A) S.W.H. (B) H.T.F. (C) B.T.U. (D) S.H.
Ans: C
94. _______ is the energy in transmit from one matter of body to another due to temperature difference. (A) Heat (B) Electricity (C) Air (D) Temperature
Ans: A
95. ______ is the degree of hotness and coldness of the body. (A) Heat (B) Temperature (C) Humidity (D) Weather
Ans: B
96. What remedy is carried out, while spindle of valve rotates continuously ?
(A) Change the spindle (B) Change the pipe line (C) Apply the water (D) Apply the oil to the line ____________
Ans: A
97. In passive heating system water is circulated in the loop naturally due to ______ action.
(A) Air syphon (B) Thermo syphon (C) Reflex action (D) Water syphon
Ans: B
98. How to prevent algae growth in overhead tank ?
(A) By using Chlorine (B) By using Sodium (C) By using Calcium (D) By using Copper sulphate
Ans: D
A:-water free sea| B:-water tight seal C:-water peel sea| D:-none of the above
Ans: B
52:-What is the use of hand taps .....
A:-interna| threads B:-externa| threads C:-interna| gauge D:-interna| drilling
Ans: A
53:-In an acetylene cylinder the acetylene is dissolved in .....
A:-carbon dioxide B:-water C:-acetone D:-mercury
Ans: C
54:-Which grade G | pipe is used for water supply.....
A:-yellow B:-blue C:-red D:-brown Ans: B
55:-The angle of metric thread is .....
A:-60 degree B:-55 degree C:-90 degree D:-47 degree
Ans: A
56:-What are the diameter of A C pipes available in .....
A:-4 cm to 100 cm
B:-5 cm to 100 cm
C:-2 cm to 100 cm
D:-6 cm to 100 cm
Ans: C
57:-Name the tool used to check internal pipe threads .....
A:-pipe taps B:-ring gauge C:-pipe plug threads D:-pipe bush
Ans: C
58:-When pressure test can be started in solvent welder PVC pipe line
A:-after 24 hours B:-after 12 hours C:-after 5 hours D:-after 36 hours
Ans: A
59:-Where are collar joints used .....
A:-sma||er diameter C I pipe B:-small diameter A C pipe
C:-small diameter 5 W pipe D:-small diameter P V C pipe Ans: B
60:-Which is the place preferred to fix scour valve .....
A:-lowest point in pipe line B:-higher point in pipe line
C:-straight line in pipe line D:-none of the above Ans: A
61:-Spindle of gate valve rotates without closing due to .....
A:-spind|e thread badly worn-out B:-spind|e is bend C:-g|and nut loose D:-defective packing Ans: A
62:-What is the size of manhole generally constructed within compound for house drainage ..... A:-90 x 70 cm B:-90 x 80 cm C:-90 x 60 cm D:-90 x 90 cm Ans: B
63:-Name the valve is used to regulate the pressure in pipe line ..... A:-re|ief valve B:-need|e valve C:-gate valve D:-check valve Ans: A
64:-what is the size of frog in brick ..... A:-100 mm length x 40 mm width x 10 to 20 mm depth B:-100 mm length x 30 mm width x 10 mm to 25 mm depth C:-100 mm length x 50 mm width x 10 mm to 15 mm depth D:-none of the above Ans: A
65:-Cross cut chisel is used for .....
A:-chipping excess metal B:-curved grooves C:-key ways D:-corner
Ans: C
66:-Which types of pipes can be cut easily by pipe cutter .....
A:-S.W. pipe B:-C.I. Pipe C:-A.C. Pipe D:-G.I. Pipe
Ans: D
67:-Name the apparatus used for testing slump .....
A:-sand cone test B:-Mud cone test C:-S|ump cone test D:-None of the above
Ans: C
68:-Which method of casting C.I. pipes gives good result .....
A:-sand casting B:-mud casting C:-centrifuga| casting D:-none of the above
Ans: C
69:-What is the range of SW. pipes available in the market .....
A:-100 to 600 mm B:-100 to 300 mm C:-100 to 180 mm D:-100 to 700 mm
Ans: A
70:-Which side of mixing tap hot water line to be connected ..... A:-right side B:-Left side C:-Midd|e side D:-Corner side Ans: B
71:-How to prevent algae growth in OH. tank? A:-copper sulphate B:-a|uminium sulphate C:-|ead powder D:-b|eaching powder Ans: A
72:-What is check the alignment and condition of inside the pipe .....
A:-smoke test B:-mirror test C:-air test D:-hydrau|ic test Ans: B
73:-How many days curing is required for SW. pipe joints .....
A:-7 days B:-2 days C:-5 days D:-3 days
Ans: A
74:-What is the size of flush pipe for low level flushing cistern
A:-32 mm B:-40 mm C:-25 mm D:-50 mm
Ans: B
75:-What causes the siphonic action in soil pipe .....
A:-leaked air B:-foul air C:-sucked air D:-air diffuser
Ans: C
76:-What instrument is used while conducting air test in pipe line .....
A:-manometer B:-vinometer C:-thermometer D:-tint meter
Ans: A
77:-State the size of ball used in ba|| test .....
A:-13 mm less than inside diameter of pipe B:-12 mm less than inside diameter of pipe
C:-11 mm less than inside diameter of pipe D:-10 mm less than inside diameter of pipe
Ans: A
78:-What is the use of NAHNI trap .....
A:-to co||ect waste water from bath room B:-to co||ect rain water
C:-to collect 50“ pipe from sewage D:-to collect raw water from river
Ans: A
79. The minimum height between the top of the water closet pan and the underside of the high level flashing cistern is (A) 200 cm (B) 125 cm (C) 100 cm (D) 30 cm
Ans: B
80. The trap which prevent the self syphonage is (A) Anti-D-Trap (B) Greese trap (C) Bottle trap (D) S trap
Ans: A
81. Rotary pumps are easily repair. Why ?
(A) No valve (B) 2 valve (C) One suction (D) Two delivery
Ans: A
82. What instrument is used while conducting air test in pipe ? (A) Manometer (B) Phonoscope (C) Stethoscope (D) Pyrometer
Ans: A
83. How much is the weight of 15 mm C.P. pillar tap ? (A) 650 gm (B) 750 gm (C) 250 gm (D) 375 gm
Ans: A
84. Which side of the mixing tap hot water line to be connected ? (A) On right side (B) Left side (C) Middle (D) Lower side
Ans: B
85. Popup waste is replacement of what ? (A) Rubber plug of chain (B) Floating paper (C) Towel (D) Cotton
Ans: A
86. ______ is an appliance for heating water in bathroom. (A) Sink (B) Geyser (C) Stove (D) Wash basin
Ans: B
87. Which one of the following receives human excreta directly from the user ? (A) Urinal (B) Wash basine (C) Water closet (D) Bidet
Ans: C
88. The minimum horizontal distance between a ground water well and septic tank should be (A) 15 m (B) 7 m (C) 10 m (D) 12 m
Ans: A
89. ______ pump is used for pumping sewage. (A) Airlift pump (B) Rotary pump (C) Centrifugal pump (D) Submersible pump
Ans: C
90. The slope provided for self-cleaning velocity to 150 mm diameter drain pipe (A) 1 : 40 (B) 1 : 60 (C) 1 : 90 (D) 1 : 30
Ans: B
91. Important part of water closet is (A) Pan (B) Foot rest (C) Trap (D) Flush tank
Ans: C
92. S.W.H. means : (A) Solar Water Heating (B) Sky Wind Heating (C) Standard Wind Heating (D) Solar Wind Heating
Ans: A
93. The amount of heat required to raise the temperature of one pound of water through 1 degree F at Sea level is (A) S.W.H. (B) H.T.F. (C) B.T.U. (D) S.H.
Ans: C
94. _______ is the energy in transmit from one matter of body to another due to temperature difference. (A) Heat (B) Electricity (C) Air (D) Temperature
Ans: A
95. ______ is the degree of hotness and coldness of the body. (A) Heat (B) Temperature (C) Humidity (D) Weather
Ans: B
96. What remedy is carried out, while spindle of valve rotates continuously ?
(A) Change the spindle (B) Change the pipe line (C) Apply the water (D) Apply the oil to the line ____________
Ans: A
97. In passive heating system water is circulated in the loop naturally due to ______ action.
(A) Air syphon (B) Thermo syphon (C) Reflex action (D) Water syphon
Ans: B
98. How to prevent algae growth in overhead tank ?
(A) By using Chlorine (B) By using Sodium (C) By using Calcium (D) By using Copper sulphate
Ans: D