150 kg/h
210 kg/h
280 kg/h
340 kg/h
D. 340 kg/h
Complete account of heat supplied by 1 kg of dry fuel and the heat consumed
Moisture present in the fuel
Steam formed by combustion of hydrogen per kg of fuel
All of the above
Babcock and Wilcox
Locomotive
Lancashire
Cochran
79 m/s
188 m/s
450 m/s
900 m/s
Isothermal
Isentropic
Hyperbolic
Polytropic
Does not change
Increases
Decreases
None of these
ηS = ηB × ηN
ηS = ηB / ηN
ηS = ηN / ηB
None of these
0.528
0.546
0.577
0.582
Feed pump
Injector
Feed check valve
Pressure gauge
Remains same
Decreases
Increases
None of these
Steam turbine
Steam condenser
Mercury boiler
All of these
0.18 MN/m²
1.8 MN/m²
18 MN/m²
180 MN/m²
Receiver type
Tandem type
Woolf type
All of these
Swept volume to the volume at cut-off
Volume at cut-off to the clearance volume
Volume at cut-off to the swept volume
Clearance volume to the volume at cut-off
2 sin²α/(1 + sin²α)
2 cos²α/(1 + cos²α)
(1 + sin²α)/2 sin²α
(1 + cos²α)/2 cos²α
Boiler efficiency, turbine efficiency, generator efficiency
All the three above plus gas cycle efficiency
Carnot cycle efficiency
Regenerative cycle efficiency
The cost of the engine, for the same power and economy, is more than that of a simple steam engine.
The forces in the working parts are increased as the forces are distributed over more parts.
The ratio of expansion is reduced, thus reducing the length of stroke.
The temperature range per cylinder is increased, with corresponding increase in condensation.
Carbon, hydrogen, nitrogen, sulphur, moisture
Fixed carbon, ash, volatile matter, moisture
Higher calorific value
Lower calorific value
Back pressure turbine
Pass out turbine
Low pressure turbine
Impulse turbine
40 %
50 %
75 %
90 %
Throttle governing
Cut-off governing
By-pass governing
None of these
Increases the workdone through the turbine
Increases the efficiency of the turbine
Reduces wear on the blades
All of these
Steam temperature remains constant
Steam pressure remains constant
Steam enthalpy remains constant
Steam entropy remains constant
Internally fired
Externally fired
Internally as well as externally fired
None of these
Condenser efficiency
Nozzle efficiency
Boiler efficiency
Vacuum efficiency
Increases
Decreases
Remain unaffected
First increases and then decreases
Increases the mean effective pressure
Increases the workdone
Decreases the efficiency of the engine
All of these
1 m
1.5 m
2 m
2.5 m
Induced draft fan and chimney
Induced draft fan and forced draft fan
Forced draft fan and chimney
Any one of the above
Volume of intake steam
Pressure of intake steam
Temperature of intake steam
All of these
Same
Less
More
None of these