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

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. 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

3. 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

4. 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

5. For a small scale toy factory, the fixed cost per month is Rs. 5000/-. The variable cost per toy is Rs. 20 and sales price is Rs. 30 per toy. The break even production per month will be _________________ toys ?

   A. 250
   B. 500
   C. 1000
   D. 3000

6. Heat transfer to the water wall in a high pressure water wall type boiler furnace is mainly by_________________?

   A. Conduction
   B. Convection
   C. Radiation
   D. Both A. & B.

7. 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

8. 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

9. 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

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