1 kg/cm²
5 kg/cm²
10 kg/cm²
18 kg/cm²
D. 18 kg/cm²
One-half
One-third
Two-fourth
Two-fifth
Remains constant
Decreases
Increases
None of these
15 %
20 %
30 %
45 %
Lancashire boiler
Babcock and Wilcox boiler
Locomotive boiler
Cochran boiler
kg of steam produced
Steam pressure produced
kg of fuel fired
kg of steam produced per kg of fuel fifed
1 kg
4/3 kg
8/3 kg
2 kg
Heating takes place at bottom and the water supplied at bottom gets converted into the mixture of steam bubbles and hot water which rise to drum
Water is supplied in drum and through down comers located in atmospheric condition it passes to the water wall and rises to drum in the form of mixture of water and steam
Feed pump is employed to supplement natural circulation in water wall type furnace
Water is converted into steam in one. Pass without any recirculation
More
Less
Equal
None of these
Hygroscopic substances
Water vapour in air
Temperature of air
Pressure of air
Equal to
Less than
Greater than
None 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
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
Locomotive boiler
Lancashire boiler
Cornish boiler
Babcock and Wilcox boiler
Evaporative capacity of a boiler
Equivalent evaporation from and at 100° C
Boiler efficiency
None of these
Clearance volume to the swept volume
Clearance volume to the volume at cut-off
Volume at cut-off to the swept volume
Swept volume to the clearance volume
Lancashire boiler
Babcock and Wilcox boiler
Yarrow boiler
None of these
More
Less
Same
Could be more or less depending on other factors
The steam is admitted on one side of the piston and one working stroke is produced during each revolution of the crankshaft
The steam is admitted, in turn, on both sides of the piston and one working stroke is produced during each revolution of the crankshaft
The steam is admitted on one side of the piston and two working strokes are produced during each revolution of the crankshaft
The steam is admitted, in turn, on both sides of the piston and two working strokes are produced during each revolution of the crankshaft
Only moving blades
Only fixed blades
Identical fixed and moving blades
Fixed and moving blades of different shape
sin²α
cos²α
tan²α
cot²α
Boiler efficiency, turbine efficiency, generator efficiency
All the three above plus gas cycle efficiency
Carnot cycle efficiency
Regenerative cycle efficiency
Temperature, time, and turbulence
Total air, true fuel, and turbulence
Thorough mixing, total air and temperature
Total air, time, and temperature
Slow speed engine
Medium speed steam engine
High speed steam engine
None of these
1.05
2.86
6.65
10.05
Mechanical fan
Chimney
A steam jet
All of these
High pressure and a low velocity
High pressure and a high velocity
Low pressure and a low velocity
Low pressure and a high velocity
Slow speed engine
Vertical steam engine
Condensing steam engine
Non-condensing steam engine
Boiler effectiveness
Boiler evaporative capacity
Factor of evaporation
Boiler efficiency
Straight
Circular
Curved
None of these
100 tonnes/h
135 tonnes/h
175 tonnes/h
250 tonnes/h