ps - pa
pa - ps
pa + ps
None of these
C. pa + ps
Cut-off ratio
Expansion ratio
Clearance ratio
None of these
Simple reaction turbine
Velocity compounded turbine
Pressure compounded turbine
Pressure-velocity compounded turbine
56 %
63 %
74 %
78 %
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
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
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
Equal to
Twice
Three times
Four times
Heat transfer takes place across cylinder walls
Work is done
Steam may be wet, dry or superheated after expansion
All of the above
Has high heating value
Retards electric precipitation
Promotes complete combustion
Has highly corrosive effect
To blow off steam when the pressure of steam inside the boiler exceeds the working pressure
To indicate the water level inside the boiler to an observer
To measure pressure of steam inside the steam boiler
None of the above
ps - pa
pa - ps
pa + ps
None of these
The content of sulphur
The content of ash and heating value
The proximate analysis
The exact analysis
1.5 m, 4 m
1.5 m, 6 m
1 m, 4 m
2 m, 4 m
Zeroth law of thermodynamics
First law of thermodynamics
Second law of thermodynamics
None of these
Mechanical efficiency
Overall efficiency
Indicated thermal efficiency
Brake thermal efficiency
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
100 tonnes/h
135 tonnes/h
175 tonnes/h
250 tonnes/h
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
Inlet and throat
Inlet and outlet
Throat and exit
All of these
Velocity of steam
Specific volume of steam
Dryness fraction of steam
All of these
Correct fuel air ratio
Proper ignition temperature
O₂ to support combustion
All the three above
Increase thermal efficiency of boiler
Economise on fuel
Extract heat from the exhaust flue gases
Increase flue gas temperature
Locomotive boiler is a water tube boiler
Water tube boilers are internally fired
Lamont boiler is a low pressure water tube boiler
All of the above
Former is fire tube type and latter is water tube type boiler
Former is water tube type and latter is fire tube type
Former contains one fire tube and latter contains two fire tubes
None/of the above
Horizontal straight line
Vertical straight line
Straight inclined line
Curved line
Stationary fire tube boiler
Internally fired boiler
Horizontal boiler
All of these
Condenser efficiency
Vacuum efficiency
Nozzle efficiency
Boiler efficiency
Gravimetric analysis of the flue gases
Volumetric analysis of the flue gases
Mass flow of the flue gases
Measuring smoke density of flue gases
Stage efficiency
Diagram efficiency
Nozzle efficiency
None of these
The steam is allowed to expand in the nozzle, where it gives a high velocity before it enters the moving blades
The expansion of steam takes place partly in the fixed blades and partly in the moving blades
The steam is expanded from a high pressure to a condenser pressure in one or more nozzles
The pressure and temperature of steam remains constant