Same value
Higher value
Lower value
Lower/higher depending on steam flow
B. Higher value
Work done during the Rankine cycle
Work done during compression
Work done during adiabatic expansion
Change in enthalpy
The mechanical draught reduces the height of chimney.
The natural draught reduces the fuel consumption.
A balanced draught is a combination of induced and forced draught.
All of the above
A horizontal steam engine requires less floor area than a vertical steam engine
The steam pressure in the cylinder is not allowed to fall below the atmospheric pressure
The compound steam engines are generally non-condensing steam engines
All of the above
Single tube, horizontal, internally fired and stationary boiler
Single tube, vertical, externally fired and stationary boiler
Multi-tubular, horizontal, internally fired and mobile boiler
Multi-tubular, horizontal, externally fired and stationary boiler
Lancashire boiler
Babcock and Wilcox boiler
Yarrow boiler
None of these
It increases the thermodynamic efficiency of the turbine
Boiler is supplied with hot water
It decreases the power developed by the turbine
All of the above
Blading efficiency
Nozzle efficiency
Stage efficiency
Mechanical efficiency
Lancashire boiler
Locomotive boiler
Babcock and Wilcox boiler
Benson boiler
Climatic conditions
Temperature of furnace gases
Height of chimney
All of these
Pulverising coal in inert atmosphere
Heating wood in a limited supply of air at temperatures below 300°C
Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel
Binding the pulverised coal into briquettes
Throttle governing
Cut-off governing
By-pass governing
None of these
Supply of excess, air
Supply of excess coal
Burning CO and unburnts in upper zone of furnace by supplying more air
Fuel bed firing
Direction of steam flow
Number of stages
Mode of steam action
All of these
Before the economiser
Before the superheater
Between the economiser and chimney
None of these
Equal to
Twice
Three times
Four times
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
24 m
35 m
57.5 m
79 m
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
21 %
23 %
30 %
40 %
High pressure and a low velocity
High pressure and a high velocity
Low pressure and a low velocity
Low pressure and a high velocity
The efficiency of steam turbines is greater than steam engines
A flywheel is a must for steam turbine
The turbine blades do not change the direction of steam issuing from the nozzle
The pressure of steam, in reaction turbines, is increased in fixed blades as well as in moving blades
Velocity compounding
Pressure compounding
Pressure-velocity compounding
All of these
0.18 MN/m²
1.8 MN/m²
18 MN/m²
180 MN/m²
Equal to
Less than
More than
None of these
Create vacuum in furnace
Create vacuum at turbine exhaust
Pump feed water
Dose chemicals in feed water
421 kg.m
421 kg.m
539 kg.m
102 kg.m
Steam turbine
Steam condenser
Mercury boiler
All of these
Internally fired boiler
Externally fired boiler
Natural circulation boiler
Forced circulation boiler
Simple impulse turbine
Simple reaction turbine
Impulse-reaction turbine
None of these
Increases
Decreases
Remain unaffected
First increases and then decreases