Caking coals are those which__________?

Related Mcqs:

1. Under-feed stokers work best for _________ coals high in volatile matter and with caking tendency?

   A. anthracite
   B. lignite
   C. semibituminous and bituminous

2. TravelUng grate stoker can burn coals at the rates of____________?

   A. 50—75 kg/m per hour
   B. 75—100 kg/m per hour
   C. 100—150 kg/m per hour
   D. 150—200 kg/m2 per hour

3. Rankine efficiency of a steam power plant____________?

   A. improves in summer as compared to that in winter
   B. improves in winter as compared to that in summer
   C. is unaffected by climatic conditions
   D. none of the above

4. The maximum percentage gain in Regenerative feed heating cycle thermal efficiency____________?

   A. increases with number of feed heaters increasing
   B. decreases with number of feed heaters increasing
   C. remains same unaffected by number of feed heaters
   D. none of the above

5. For forced draught system, the function of chimney is mainly_____________?

   A. to produce draught to accelerate the combustion of fuel
   B. to discharge gases high up in the atmosphere to avoid hazard
   C. to reduce the temperature of the hot gases discharged
   D. none of the above

6. Incase of reaction steam turbine___________?

   A. there is enthalpy drop both in fixed and moving blades
   B. there is enthalpy drop only in fixed blades
   C. there is enthalpy drop only in moving blades
   D. none of the above

7. The thermal efficiency of the engine with condenser as compared to without condenser, for a given pressure and temperature of steam, is_____________?

   A. higher
   B. lower
   C. same as long as initial pressure and temperature is unchanged
   D. none of the above

8. Method which is commonly applied for unloading the coal for small power plant is___________?

   A. lift trucks
   B. coal accelerators
   C. tower cranes
   D. belt conveyor

9. At low value of power factor, the cost of generation of a power station will be____________?

   A. high
   B. low
   C. remain same
   D. none of the above

10. If the diversity factor of a power station is high then its generation cost is___________?

    A. high
    B. low
    C. remain same
    D. depend on the plan type