The heat loss in a boiler takes place in the form of________________?

Related Mcqs:

1. Pick up the correct statement as regards Cornish boiler and Lancashire boiler _______________?

   A. cornish is fire tube and lancashire is water tube
   B. cornish is water tube and lancashire is fire tube
   C. cornish has two fire tubes and lancashire has one
   D. lancashire has two fire tubes and cornish has one
   E. both have two fire tubes

2. The difference between cornish boiler and lancashire boiler is that_________________?

   A. former is fire tube type and latter is water tube type boiler
   B. former is water tube type and latter is fire tube type
   C. former contains one fire tube and latter contains two fire tubes
   E. none/of the above

3. The size of a boiler drum in pulverised fuel fired boiler,as its size and capacity, (steam pressure and flow ratings) increase __________________?

   A. increases
   B. decreases
   C. remains unchanged
   D. increases/decreases depending on steam temperature requirements
   E. unpredictable

4. For the same diameter and thickness of tube, a water tube boiler compared to a fire tube boiler has ____________________?

   A. more heating surface
   B. less heating surface
   C. equal heating surface
   D. heating surface depends on other parameters
   E. none of the above

5. Maximum energy loss in a boiler occurs due to _______________________?

   A. unburnt carbon in ash
   B. incomplete combustion
   C. ash content
   D. flue gases
   E. radiation losses

6. The relative heat absorption for successively added equal areas of boiler convection heating surfaces____________________?

   A. increases
   B. decreases
   C. remains unaffected
   D. first increases and then decreases
   E. first decreases and then increases

7. The latent heat of steam at pressures greater than atmospheric in comparison to latent heat at atmospheric pressure is__________________?

   A. less
   B. more
   C. equal
   D. may be less or more depending on temperature
   E. unpredictable

8. The ratio of heat utilised to produce steam and the heat liberated in furnace is known as___________________?

   A. boiler effectiveness
   B. boiler evaporative capacity
   C. factor of evaporation
   D. equivalent evaporation
   E. boiler efficiency

9. The shell diameter and length of locomotive boiler are_______________?

   A. 1.5 m, 4 m
   B. 1.5 m, 6 m
   C. 1 m, 4 m
   D. 2 m, 4 m
   E. 1.5 m, 8 m

10. The capacity of induced draft fan compared to forced draft fan in a boiler is__________________?

    A. same
    B. more
    C. less
    D. less or more depending on size of boiler
    E. unpredictable