Frictional losses
It is not possible to achieve 0°K temperature
Leakage
Non availability of ideal substance
B. It is not possible to achieve 0°K temperature
0.5 to 1 m
1 to 2 m
1.25 to 2.5 m
2 to 3 m
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
Blading efficiency
Nozzle efficiency
Stage efficiency
Mechanical efficiency
Higher calorific value at constant volume
Lower calorific value at constant volume
Higher calorific value at constant pressure
Lower calorific value at constant pressure
Absolute velocity at the inlet of moving blade is equal to that at the outlet
Relative velocity at the inlet of the moving blade is equal to that at the outlet
Axial velocity at inlet is equal to that at the outlet
Whirl velocity at inlet is equal to that at the outlet
The cost of the engine, for the same power and economy, is more than that of a simple steam engine.
The forces in the working parts are increased as the forces are distributed over more parts.
The ratio of expansion is reduced, thus reducing the length of stroke.
The temperature range per cylinder is increased, with corresponding increase in condensation.
Surface condenser
Jet condenser
Barometric condenser
Evaporative condenser
Wholly in blades
Wholly in nozzle
Partly in the nozzle and partly in blades
None of these
Safety valve
Water level indicator
Pressure gauge
Fusible plug
Area of the actual indicator diagram to the area of theoretical indicator diagram
Actual workdone per stroke to the theoretical workdone per stroke
Actual mean effective pressure to the theoretical mean effective pressure
Any one of the above
Side by side and each cylinder has common piston, connecting rod and crank
Side by side and each cylinder has separate piston, connecting rod and crank
At 90° and each cylinder has common piston, connecting rod and crank
At 90° and each cylinder has separate piston, connecting rod and crank
Choked
Under-damping
Over-damping
None of these
There is a pressure drop in the nozzle
Fluid flows through the nozzle
Pressure drops and fluid flows through the nozzle
There is no pressure drop and fluid does not flow through the nozzle
Frictional losses
It is not possible to achieve 0°K temperature
Leakage
Non availability of ideal substance
Prevent flat surfaces under pressure from tearing apart
Take care of failure in shear
Take care of failure in compression
Provide support for boiler
40 %
50 %
75 %
90 %
Velocity compounding
Pressure compounding
Pressure-velocity compounding
All of these
1 to 1.25m
1 to 1.75 m
2 to 4 m
1.75 to 2.75 m.
Increases
Decreases
Remains unchanged
Increases/decreases depending on steam temperature requirements
Steam jet
Centrifugal fan
Chimney
Both (A) and (B)
p₁. p₂
p₁/p₂
p₂/p₁
p₁ + p₂
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
kg of steam produced
Steam pressure produced
kg of fuel fired
kg of steam produced per kg of fuel fifed
Boiler effectiveness
Boiler evaporative capacity
Factor of evaporation
Boiler efficiency
Has no effect on
Decreases
Increases
None of these
48 : 20 : 15 : 7 : 10
10 : 7 : 15 : 20 : 48
20 : 48 : 7 : 15 : 10
7 : 15 : 20 : 10 : 48
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
Amount of water evaporated per hour
Steam produced in kg/h
Steam produced in kg/kg of fuel burnt
All of these
1000 J
360 kJ
3600 kJ
3600 kW/sec
Reheat factor
Stage efficiency
Internal efficiency
Rankine efficiency