Related Mcqs:

1. 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

2. 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

3. 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

4. Which of the following gives the correct sequence of flow of the flue gases through the above mentioned boiler accessories ?

   A. A, C, B, D
   B. D, B, C, A
   C. D, C, B, A
   D. D, A, B, C

5. A high pressure boiler generates steam at a pressure greater than _____________________ kg/cm2 ?

   A. 10
   B. 30
   C. 50
   D. 80

6. Name the safety device used to protect the boiler, when the water level falls below a minimum level ?

   A. Blow down valve
   B. Blow off cock
   C. Fusible plug
   D. Safety valve

7. 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 A, B. & C

8. Blow off cock is provided in steam boiler to ____________________?

   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

9. As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint is the _____________ joint ?

   A. Butt
   B. Lap
   C. Welded
   D. None of these

10. Boiler draught of 10 mm water column is equivalent to_____________________?

    A. 1 kgf/m2
    B. 10 kgf/m2
    C. 10 kgf/mm2
    D. 1 kgf/mm2