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For the following questions answer them individually
Maximum steam pressure (in bar) in a locomotive boiler is limited to
5
10
18
25
Compounding of steam turbine is done to
Balance the rotor
Reduce the blade friction
Reduce the rotor speed
Connect the shaft of one turbine to that of another
In diesel engine, the suction contains
Air only
Fuel only
Mixture of air and fuel
Air or fuel
The fluid drawn in during suction in petrol engine contains
Fuel or air
Spark ignition engine is
Petrol engine
Diesel engine
Steam engine
C.I. engine
The working fluid for a diesel engine during the suction stroke is
Fuel-air mixture
Fresh air
Products of combustion
None of the above
For a convergent nozzle, If the exit pressure is less than critical pressure, the mass rate of flow will be
Increasing
Decreasing
Zero
Constant
In Impulse turbine, pressure on the two sides of the moving blades
Increases
Decreases
Remain same
May decrease or remain constant
Brayton cycle is a reversed
Carnot cycle
Rankine cycle
Joule cycle
Dual cycle
For the same maximum pressure and peak temperature, which cycle will be most efficient?
Diesel
Dual combustion
Otto
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