A fuel with high heat release rate will_________________?

Related Mcqs:

1. Gasification of the solid fuel converts its organic part into combustible by interaction with air/oxygen and steam so as to obtain a secondary gaseous fuel of high calorific value having no ash. Gasification reactions are normally carried out at about _____________ °C?

   A. 400-500
   B. 900-1000
   C. 1400-1500
   D. 1700-1800

2. If the specific heat of gaseous products of combustion of a fuel is high, the abiabatic flame temperature will be_____________?

   A. Low
   B. High
   C. Very high, if the fuel is of low calorific value
   D. None of these

3. Theoretical flame temperature of a fuel is that temperature which is attained, when the fuel is completely burnt ‘using theoretical amount of air in___________________?

   A. Air
   B. Oxygen
   C. Either A. or B.
   D. Either A. or B. without gain or loss of heat

4. 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

5. For the case of a fuel gas undergoing combustion with air, if the air/fuel ratio is increased, the adiabatic flame temperature will_____________________?

   A. Increase
   B. Decrease
   C. Increase or decrease depending on the fuel type
   D. Not change

6. Heat penetration rate in narrow coke ovens in high temperature carbonisation of coal is around ______________ cm/hr?

   A. 2.5
   B. 0.5
   C. 10
   D. 20

7. ‘Fuel’ can be defined as a substance which produces heat by___________________?

   A. Combustion
   B. Nuclear fission
   C. Nuclear fusion
   D. All A., B. & C.

8. Incomplete combustion of a fuel is characterised by the high _______________ in the flue gas?

   A. Smoke
   B. Temperature
   C. Oxygen
   D. Carbon monoxide

9. High sulphur content in a fuel ______________ of the flue gases?

   A. Decreases the dew point
   B. Increases the dew point
   C. Reduces the combustion efficiency by limiting the permissible temperature reduction
   D. Both B. and C.

10. If oxygen content in the flue gas rises too high, fuel is being wasted by _______________?

    A. Incomplete combustion
    B. Dry gas/stack gas loss
    C. Moisture loss
    D. None of these