A. Guard the boiler in case of abnormal rise in steam pressure
B. Drain out water and sludge during its repair
C. Regulate the supply of water in boiler
D. Put out the fire in the furnace when the water level in the boiler falls to unsafe limit
Related Mcqs:
- The delivery pressure of boiler feed water pump compared to the boiler steam pressure is___________________?
A. Same
B. Slightly less
C. Slightly more
D. Much more - The most prominent single cause of corrosion in boiler-tubes, drums, economisers and steam superheaters in a thermal power plant boiler is the_______________?
A. Water alkalinity & leakage
B. Hydrazine addition during feed water treatment
C. Release of non-condensable gas from water in the boiler
D. Scale formation - Which of the following is a boiler accessory i.e., not a boiler mounting ?
A. Blow off cock
B. Feed check valve
C. Feed water pump
D. Stop valve - The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the ______________ of a boiler ?
A. Evaporative capacity
B. Evaporation efficiency
C. Thermal efficiency
D. Steam load - A high pressure boiler generates steam at a pressure greater than _____________________ kg/cm2 ?
A. 10
B. 30
C. 50
D. 80 - Use of economiser in a boiler plant reduces the fuel consumption for steam generation by about _______________ percent ?
A. 1
B. 10
C. 30
D. 50 - A fire tube boiler is limited to a maximum steam pressure of about ______________ kg/cm2 ?
A. 6
B. 18
C. 38
D. 52 - Dry saturated steam can be converted into super heated steam by____________________?
A. Increasing its cross-sectional area of flow
B. Passing it through a pressure reducing valve
C. Forcing it downwards through a vertical tube
D. None of these - Saturated steam at a pressure of 25 kg/cm2 is throttled to attain 5 kg/cm2. Then the outcoming steam will be_________________?
A. Wet
B. Saturated
C. Superheated
D. None of these - Latent heat of dry steam at atmospheric pressure is 539 Kcal/kg; which _____________ with increase in the pressure of steam?
A. Decreases
B. Increases
C. Remain same
D. May increase or decrease
