The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the ______________ of a boiler ?

Related Mcqs:

1. 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

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 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. 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

5. 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.

6. 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

7. For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm3) while the C.V. is same on weight basis (i.e., kcal/kg) ?

   A. Propane and acetylene
   B. Propane and LPG
   C. Sewage gas and gobar gas
   D. B.F gas and coke oven gas

8. 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

9. Catalyst used in the catalytic converter employed in automobiles to convert CO into CO2 and for complete oxidation of un-burnt hydrocarbons is___________________?

   A. Nickel
   B. Cobalt
   C. Vanadium
   D. Platinum

10. Water-tube boiler is the one, in which _____________________?

    A. Water passes through tubes and flue gases around it
    B. Tube carrying hot flue gases are immersed in a pool of water
    C. Tubes are placed in vertical position
    D. None of these
    Answer: Option A