C:-dos not sag
D:-dos not fig
Correct Answer:- Option-B
Question39:-Which component in gully trap is used to prevent gases from entering waste line
A-air seal
B:-C.l. cover
C:-water seal
D:-C.l. grating
Correct Answer:- Option-C
Question40:-Which accessories is used to change the direction flow in the pipe .....
A:-water meter
-pipe
“cocks
D:-fittings
Correct Answer:- Option-D
Question41:-The pipe fitting used to connect a service pipe to a water main is called as .....
A:-adjusting nut
B:-ferrule
C:-coupling
D:-air valve
Correct Answer:- Option-B
Question42:-In septic tank the ventilation pipe usually provided is of .....
A:-100 mm dia
-150 mm dia
C:-75 mm dia
D:-50 mm dia
Correct Answer:- Option-C
Question43:-Flogging is the method of generating a mist for the application of .....
A:-spray
soak
C:-sanitizers
D:-filtering
Correct Answer:- Option-C
Question44:-Gate valve is one of the most common valves used in the main supply lines to the .....
A:-ventilating line
-water supply system
C:-back flow system
D:-drainage system
Correct Answer:- Option-B
Question45:-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
Correct Answer:- Option-C
Question46:-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
Correct Answer:- Option-C
Question47:-Dresser coupling and Victaulic joint basically are .....
A:-back push joint
-chemical joint
C:-mechanical joint
D:-adhesive joint
Correct Answer:- Option-C
Question48:-Which one of the following alloys can resist salt water corrosion .....
A:-zinc alloy