Supplied by same manufacturer loose and assembled at site
Supplied mounted on a single base
Purchased from several parties and packed together at site
Packaged boiler does not exist
B. Supplied mounted on a single base
Carbon, hydrogen, nitrogen, sulphur, moisture
Fixed carbon, ash, volatile matter, moisture
Higher calorific value
Lower calorific value
Less
More
Equal
May be less or more depending on temperature
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
One-fourth
One-third
Two-fifth
Three-fifth
Equal to
Less than
Higher than
None of these
Corroding air heaters
Spontaneous combustion during coal storage
Facilitating ash precipitation
All of the above
Remains the same
Increases
Decreases
Is unpredictable
One-half
One-third
Two-fourth
Two-fifth
Coking coal
Non-coking or free burning coal
Pulverised coal
High sulphur coal
1.05
2.86
6.65
10.05
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
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
Mechanical fan
Chimney
A steam jet
All of these
Cut-off ratio
Expansion ratio
Clearance ratio
None of these
1.5 m, 4 m
1.5 m, 6 m
1 m, 4 m
2 m, 4 m
1000 J
360 kJ
3600 kJ
3600 kW/sec
Wet
Superheated
Remain dry saturated
Dry
Indicated power
Brake power
Frictional power
None of these
Anthracite coal
Bituminous coal
Lignite
Peat
The critical pressure gives the velocity of steam at the throat equal to the velocity of sound.
The flow in the convergent portion of the nozzle is subsonic.
The flow in the divergent portion of the nozzle is supersonic.
To increase the velocity of steam above sonic velocity (supersonic) by expanding steam below the critical pressure, the divergent portion for the nozzle is not necessary.
Lamont boiler
Benson boiler
Loeffler boiler
All of these
Supplied by same manufacturer loose and assembled at site
Supplied mounted on a single base
Purchased from several parties and packed together at site
Packaged boiler does not exist
Water level indicator
Pressure gauge
Safety valve
All of these
Velocity compounded type
Reaction type
Pressure compounded type
All of these
9.81 Joules
102 Joules
427 Joules
None of these
75
115
165
225
Lancashire boiler
Babcock and Wilcox boiler
Yarrow boiler
None of these
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
260 kW
282 kW
296 kW
302 kW
Bismuth
Copper
Aluminium
Nickel