Diagram efficiency
Nozzle efficiency
Gross efficiency
None of these
C. Gross efficiency
Ash
Volatile matter
Moisture
Hydrogen
Steam evaporation rate per kg of fuel fired
Work done in evaporating 1 kg of steam per hour from and at 100°C into dry saturated steam
The evaporation of 15.65 kg of water per hour from and at 100°C into dry saturated steam
Work done by 1 kg of steam at saturation condition
Maximum
Minimum
Zero
Depends on temperature also
1 kg
4/3 kg
8/3 kg
2 kg
High pressure and a low velocity
High pressure and a high velocity
Low pressure and a low velocity
Low pressure and a high velocity
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
Internally fired
Externally fired
Internally as well as externally fired
None of these
Cut-off ratio
Expansion ratio
Clearance ratio
None of these
0.2
0.8
1.0
0.6
1 to 1.25m
1 to 1.75 m
2 to 4 m
1.75 to 2.75 m.
Does not change
Increases
Decreases
None of these
Diverge from left to right
Diverge from right to left
Are equally spaced throughout
First rise up and then fall
Condenser efficiency
Nozzle efficiency
Boiler efficiency
Vacuum efficiency
Non-coking bituminous coal
Brown coal
Pulverised coal
Coking bituminous coal
Babcock and Wilcox
Locomotive
Lancashire
Cochran
Equal to Carnot cycle
Less than Carnot cycle
More than Carnot cycle
Could be anything
180° to each other
90° to each other
0° to each other
None of these
Mean diameter and thickness
Inside diameter and thickness
Outside diameter and thickness
Outside diameter and inside diameter
Zero
Minimum
Maximum
None of these
DIN
BS
ASTM
IBR
To provide an adequate supply of air for the fuel combustion
To exhaust the gases of combustion from the combustion chamber
To discharge the gases of combustion to the atmosphere through the chimney
All of the above
Isothermal
Isentropic
Hyperbolic
Polytropic
Reheat factor
Stage efficiency
Internal efficiency
Rankine efficiency
To guide motion of the piston rod and to prevent it from bending
To transfer motion from the piston to the crosshead
To convert heat energy of the steam into mechanical work id) to exhaust steam from the cylinder at proper moment
None of these
One half
One third
One fourth
One fifth
To reduce the ratio of expansion in each cylinder
To reduce the length of stroke
To reduce the temperature range in each cylinder
All of the above
Correct fuel air ratio
Proper ignition temperature
O₂ to support combustion
All the three above
Low
Very low
High
Very high
More
Less
Same
None of these
Simple impulse turbine
Simple reaction turbine
Impulse-reaction turbine
None of these