Related Questions

Fusible plug for boilers is made of fusible metal containing tin, lead, and
A Bismuth
B Copper
C Aluminium
D Nickel
A fusible plug is fitted in small boilers in order to
A Avoid excessive build up of pressure
B Avoid explosion
C Extinguish fire if water level in the boiler falls below alarming limit
D Control steam dome
Function of fusible plug in a boiler is to
A Drain out water and sludge from the boiler during repair
B Put off fire in the furnace when water level in the boiler falls to unsafe limit
C Guard the boiler in case of abnormal rise in steam pressure
D All of the above
Very high pressure boilers are usually __________ boilers.
A Fire tube
B Water tube
C Waste heat
D Natural circulation
Duplex feed pumps are used in small steam boilers. These operate on the principle of
A Centrifugal pump
B Axial flow pump
C Gear pump
D Reciprocating pump
The function of injector used in small capacity boilers is to
A Create vacuum
B Inject chemical solution in feed pump
C Pump water, similar to boiler feed pump
D Add make up water in the system
2 large and 1 small pumps can fill a water tank in 4 hours. 1 large and 3 small pumps can also fill the same water tank in 4 hours . How many hours will it take for 3 large 4 small pumps to fill the tank?
A 2 hours
B 2.5 hours
C 3 hours
D 3.5 hours
2 large and 1 small pumps can fill a water tank in 4 hours. One large and 3 small pumps can also fill the same water tank in 4 hours. how many hours will it take for 3 large and 4 small pumps to fill the tank?
A 2 hours
B 2.5 hours
C 3 hours
D 3.5 hours
The solid brick shown is made of small square shaped bricks of side 1. when the large brick is disassembled into its component small bricks. the total surface area of all the small bricks is how much greater than the surface area of the large brick?
A 32
B 40
C 60
D 72
The most commonly used combustion system manufactured in India for the thermal power plant boilers is the __________ combustion system.
A Pulverised fuel
B Travelling grate stoker firing
C Circulating fluidised bed
D Fluidised bed

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