The catalyst used in shift converter is _____________________?
A. Nickel
B. Vanadium
C. Silica gel
D. Alumina
Fuels and Combustion
Calorific value of a typical dry anthracite coal may be around _____________ Kcal/kg?
Calorific value of a typical dry anthracite coal may be around _____________ Kcal/kg?
A. 1000
B. 4000
C. 8000
D. 15000
Low temperature oxidation of coal during storage does not decrease its__________________?
Low temperature oxidation of coal during storage does not decrease its__________________?
A. Oxygen content
B. Caking power
C. Calorific value
D. None of these
Theoretical flame temperature of a fuel is that temperature which is attained, when the fuel is completely burnt ‘using theoretical amount of air in___________________?
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
__________ is used as jet engine fuel ?
__________ is used as jet engine fuel ?
A. Petrol
B. Diesel
C. Kerosene
D. LPG
Tar is a better fuel than furnace oil, because of its___________________?
Tar is a better fuel than furnace oil, because of its___________________?
A. Higher calorific value
B. Lower sulphur content
C. Higher emissivity (0.8-0.9) resulting in higher radiation heat transfer rate
D. Both A. and B.
In low temperature carbonisation (as compared to high temperature carbonisation) of coal__________________?
In low temperature carbonisation (as compared to high temperature carbonisation) of coal__________________?
A. Ammonia yield is more
B. Aliphatic tar is produced
C. Free carbon in tar is more
D. All A., B. and C.
Which of the following will be unsuitable for dust cleaning from flue gas at 400°C from a pulverised coal fired boiler ?
Which of the following will be unsuitable for dust cleaning from flue gas at 400°C from a pulverised coal fired boiler ?
A. Multicyclones
B. Bag filter
C. Wet scrubber
D. Hydrocyclones
Artificial draught produced by a fan can be controlled by the___________________?
Artificial draught produced by a fan can be controlled by the___________________?
A. Speed of the fan
B. Damper
C. Variation in the pitch of the fan blades
D. All A., B. and C.
Out of the following, which is the most important parameter for the blast furnace grade coke ?
Out of the following, which is the most important parameter for the blast furnace grade coke ?
A. CSR & CRI
B. Ash content
C. Moisture content
D. Volatile matter content