Stage efficiency
Internal efficiency
Rankine efficiency
None of these
B. Internal efficiency
100 kg/cm² and 540°C
1 kg/cm² and 100°C
218 kg/cm² abs and 373°C
218 kg/cm² abs and 540°C
Slow speed engine
Medium speed steam engine
High speed steam engine
None of these
0.5 to 10 MN/m²
1 to 15 MN/m²
2.5 to 15 MN/m²
3.5 to 20 MN/m²
48 : 20 : 15 : 7 : 10
10 : 7 : 15 : 20 : 48
20 : 48 : 7 : 15 : 10
7 : 15 : 20 : 10 : 48
Remain same
Increases
Decreases
Behaves unpredictably
Water passes through the tubes which are surrounded by flames and hot gases
The flames and hot gases pass through the tubes which are surrounded by water
Forced circulation takes place
None of these
40 %
50 %
75 %
90 %
Throttle governing
Cut-off governing
By-pass governing
None of these
The steam is expanded in nozzles only and there is a pressure drop and heat drop
The steam is expanded both in fixed and moving blades continuously
The steam is expanded in moving blades only
The pressure and temperature of steam remains constant
Straight
Circular
Curved
None of these
Piston rod
Connecting rod
Eccentric rod
Valve rod
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
I.P. = a × m + b
m = a + b × I.P.
I.P. = b × m + a
m = (b/I.P.) - a
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
Locomotive boiler
Lancashire boiler
Cornish boiler
Babcock and Wilcox boiler
Back pressure turbine
Pass out turbine
Low pressure turbine
Impulse turbine
1/(I.P)
1/(I.P)²
I.P.
(I.P.)²
24 m
35 m
57.5 m
79 m
Flue gases pass through tubes and water around it
Water passes through the tubes and flue gases around it
Work is done during adiabatic expansion
Change in enthalpy
Mass of the steam discharged increases
Entropy and specific volume of the steam increases
Exit velocity of steam reduces
All of these
Equal to
Less than
More than
None of these
T1 /88.25H
88.25H/T1
T1 /176.5H
176.5H/T1
Equal to unity
Less than unity
Greater than unity
None of these
1 kg/cm
6 kg/cm
17 kg/cm²
100 kg/cm²
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
Velocity increases
Velocity decreases
Velocity remains constant
Pressure remains constant
Condenser efficiency
Vacuum efficiency
Nozzle efficiency
Boiler efficiency
Lancashire boiler
Locomotive boiler
Babcock and Wilcox boiler
Benson boiler
Approach temperature should be as low as possible
Handling and maintenance should be easier
Heat transfer area should be optimum
Stack gases should not be cooled to the dew point
Very low pressure
Atmospheric pressures
Medium pressures
Very high pressures