B:-Right side of boiler shell
C:-Bottom of boiler shell
D:-Left side of boiler shell
Correct Answer:- Option-A
Question48:-Where is High-steam low water safety valve used ?
A:-Cochran boiler
B:-Lancashire boiler
C:-Babcock and Wilcox boiler
D:-Locomotive boiler
Correct Answer:- Option-B
Question49:-Which among the following pressure measuring instrument is used as a pressure gauge in boiler ?
A:-Bellows
-Magnetic coupling
C:-Bourdon-tube
D:-Mc-Leod gauge
Correct Answer:- Option-C
Question50:-What is the function of fusible plug ?
A:-Regulate pressure inside boiler
-Supply excess water needed
C:-Check water level
D:-Put-off fire in furnace, as water level fall
Correct Answer:- Option-D
Question51:-What is the function of boiler accessories ?
A:-For operation and safety of boiler
-For cleaning and maintenance
C:-For increasing overall efficiency of boiler
D:-Anxiallary part to support boiler
Correct Answer:- Option-C
Question52:-Which among the following boiler accessories preheats boiler feed water ?
A:-Air-preheaters
B:-Economiser
C:-Super-heaters
D:-Water-feeding equipment
Correct Answer:- Option-B
Question53:-Where is air preheater placed ?
A:-After the economiser
B:-In the furnace
C:-Before the economiser
D:-In the chimney
Correct Answer:- Option-A
Question54:-What is/are the advantage/s of super heater ?
i. It increases specific steam consumption of engines and turbines.
ர்‌. It eliminates the erosion of the turbine blades.
iii. It reduces condensation losses in pipes and engine cylinder.
iv. Efficiency of steam plant is higher.

नी and iv

Correct Answer:- Option-D
Question55:-What are the functions of blow-off cock ?
i. Empty boiler for cleaning and maintenance purpose.
ii. Supply water to the boiler high pressure continuously.
iii. Prevent the back-flow of water from boiler to pump.
iv. Discharge mud and sediments accumulated at the bottom of the boiler.
-iand iii

D:-ii and iv
Correct Answer:- Option-C