50°C and normal atmospheric pressure
50°C and 1.1 bar pressure
100°C and normal atmospheric pressure
100°C and 1.1 bar pressure
C. 100°C and normal atmospheric pressure
Heat transfer takes place
Work is done by the expanding steam
Internal energy of steam changes
None of the above
Area of nozzle at throat
Initial pressure and volume of steam
Final pressure of steam leaving the nozzle
Both (A) and (B)
150 kg/h
210 kg/h
280 kg/h
340 kg/h
Air present in atmosphere at NTP conditions
Air required for complete combustion of fuel with no excess air
Air required for optimum combustion so as to have reasonable excess air
Air required to convert CO into CO₂
High pressure and a low velocity
High pressure and a high velocity
Low pressure and a low velocity
Low pressure and a high velocity
Condenser efficiency
Nozzle efficiency
Boiler efficiency
Vacuum efficiency
Boiler effectiveness
Boiler evaporative capacity
Factor of evaporation
Boiler efficiency
The expansion of steam in a nozzle follows Rankine cycle.
The friction in the nozzle increases the dryness fraction of steam.
The pressure of steam at throat is called critical pressure.
All of the above
Heat carried away by flue gases
Heat carried away by ash
Moisture present in fuel and steam formed by combustion of hydrogen in fuel
All of the above
0°C
100°C
Saturation temperature at given pressure
Room temperature
Inherent moisture and surface moisture are different things
In some coals moisture may be present up to 40%
Some moisture in coal helps in better burning which is not possible with completely dry coal
It increases thermal efficiency
1.05
2.86
6.65
10.05
Stage efficiency
Diagram efficiency
Nozzle efficiency
None of these
30 MW
60 MW
100 MW
500 MW
Velocity compounding
Pressure compounding
Pressure-velocity compounding
All of these
2 to 4.5 m
3 to 5 m
5 to 7.5 m
7 to 9 m
Volume of intake steam
Pressure of intake steam
Temperature of intake steam
All of these
Higher calorific value at constant volume
Lower calorific value at constant volume
Higher calorific value at constant pressure
Lower calorific value at constant pressure
Receiver type compound engine
Tandem type compound engine
Woolf type compound engine
None of these
10 to 15 %
15 to 25 %
25 to 40 %
40 to 60 %
Chimney
Induced draft fan
Both combined (A) and (B)
Steam jet draught
Have common piston rod
Are set at 90°
Have separate piston rods
Are set in V-arrangement
Mass of the steam discharged increases
Entropy and specific volume of the steam increases
Exit velocity of steam reduces
All of these
Equal
Less
More
None of these
Receiver type compound engine
Tandem type compound engine
Woolf type compound engine
Both (A) and (B)
Remains the same
Increases
Decreases
Is unpredictable
1 to 1.25m
1 to 1.75 m
2 to 4 m
1.75 to 2.75 m.
Condenser
Condensate pump
Air extraction pump
All of these
Side by side and each cylinder has common piston, connecting rod and crank
Side by side and each cylinder has separate piston, connecting rod and crank
At 90° and each cylinder has common piston, connecting rod and crank
At 90° and each cylinder has separate piston, connecting rod and crank
More
Less
Same
None of these