Cement industry
Thermal power plant
Blast furnace
Domestic use
C. Blast furnace
V = 2g H'
V = 2g/H'
V = H'/2g
V = 2gH'
Efficiency of the boiler
Efficiency of the chimney
Efficiency of the fan
Power of the boiler
To provide reciprocating motion to the slide valve
To convert reciprocating motion of the piston into rotary motion of the crank
To convert rotary motion of the crankshaft into to and fro motion of the valve rod
To provide simple harmonic motion to the D-slide valve
V = 44.72 hd K
V = 44.72 K hd
V = 44.72 K hd
V = 44.72 K hd
Simple impulse turbine
Simple reaction turbine
Impulse-reaction turbine
None of these
Centrifugal pump
Axial flow pump
Gear pump
Reciprocating pump
LaMont boiler
Lancashire boiler
Velox boiler
Benson boiler
Cut-off ratio
Expansion ratio
Clearance ratio
None of these
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
Stationary fire tube boiler
Internally fired boiler
Horizontal boiler
All of these
The efficient steam jacketing of the cylinder walls
Superheating the steam supplied to the engine cylinder
Keeping the expansion ratio small in each cylinder
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
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
0°C
40°C
60°C
100°C
Ratio of thermal efficiency to Rankine efficiency
Ratio of brake power to the indicated power
Ratio of heat equivalent to indicated power to the energy supplied in steam
Product of thermal efficiency and Rankine efficiency
0.2 to 0.5
0.5 to 0.65
0.65 to 0.9
0.8 to 1.2
24 m
35 m
57.5 m
79 m
1 kg/cm²
5 kg/cm²
10 kg/cm²
18 kg/cm²
More
Less
Equal
None of these
Ash
Volatile matter
Moisture
Hydrogen
2 sin²α/(1 + sin²α)
2 cos²α/(1 + cos²α)
(1 + sin²α)/2 sin²α
(1 + cos²α)/2 cos²α
Internally fired boiler
Externally fired boiler
Natural circulation boiler
Forced circulation boiler
137 fire tubes and 44 superheated tubes
147 fire tubes and 34 superheated tubes
157 fire tubes and 24 superheated tubes
167 fire tubes and 14 superheated tubes
Last superheater or reheater and air preheater
Induced draft fan and forced draft fan
Air preheater and chimney
None of the above
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.
Inlet and throat
Inlet and outlet
Throat and exit
All of these
Hygroscopic substances
Water vapour in air
Temperature of air
Pressure of air
Steam temperature remains constant
Steam pressure remains constant
Steam enthalpy remains constant
Steam entropy remains constant
In the drum
In the fire tubes
Above steam dome
Over the combustion chamber
4.75 mm
5.47 mm
7.45 mm
47.5 mm