Economiser
Superheater
Both (A) and (B)
None of these
C. Both (A) and (B)
Steam temperature remains constant
Steam pressure remains constant
Steam enthalpy remains constant
Steam entropy remains constant
One
Two
Three
Four
The steam is allowed to expand in the nozzle, where it gives a high velocity before it enters the moving blades
The expansion of steam takes place partly in the fixed blades and partly in the moving blades
The steam is expanded from a high pressure to a condenser pressure in one or more nozzles
The pressure and temperature of steam remains constant
No drum
One drum
Two drums
Three drums
Hygroscopic substances
Water vapour in air
Temperature of air
Pressure of air
1.5 m, 4 m
1.5 m, 6 m
1 m, 4 m
2 m, 4 m
Linearly
Rapidly first and then slowly
Slowly first and then rapidly
Inversely
Reheating of steam
Regenerative feed heating
Binary vapour plant
Any one of these
One-fourth
One-third
Two-fifth
Three-fifth
One-half
One-third
Two-fourth
Two-fifth
Increases
Decreases
Remain unaffected
First increases and then decreases
5 to 6 m
6 to 7 m
7.25 to 9 m
9 to 10 m
Lancashire boiler
Locomotive boiler
Babcock and Wilcox boiler
Benson boiler
More
Less
Same
Could be more or less depending on other factors
Regeneration
Reheating of steam
Both (A) and (B)
Cooling of steam
All the fuel burns instantaneously producing high energy release
Fuel burns with less air
Coal bursts into flame without any external ignition source but by itself due to gradual increase in temperature as a result of heat released by combination of oxygen with coal
Explosion in furnace
Ratio of heat actually used in producing steam to the heat liberated in the furnace
Ratio of the mass of steam produced to the mass of total water supplied in a given time
Ratio of the heat liberated in the furnace to the heat actually used in producing steam
None of the above
2 cm
6 cm
8 cm
12 cm
Vertical fire tube type
Horizontal fire tube type
Horizontal water tube type
Forced circulation type
Blow off cock
Feed check valve
Economiser
Fusible plug
Carnot cycle
Rankine cycle
Joule cycle
Stirling cycle
Below atmospheric pressure
1 kg/cm²
100 kg/cm²
225.6 kg/cm²
Equivalent evaporation
Factor of evaporation
Boiler efficiency
Power of a boiler
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
Induced steam jet draught
Chimney draught
Forced steam jet draught
None of these
Pressure increases while velocity decreases
Pressure decreases while velocity increases
Pressure and velocity both decreases
Pressure and velocity both increases
The given boiler with the model
The two different boilers of the same make
Two different makes of boilers operating under the same operating conditions
Any type of boilers operating under any conditions
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
Lancashire boiler
Babcock and Wilcox boiler
Locomotive boiler
Cochran boiler
When the cross-section of the nozzle increases continuously from entrance to exit
When the cross-section of the nozzle decreases continuously from entrance to exit
When the cross-section of the nozzle first decreases from entrance to throat and then increases from its throat to exit
None of the above