70.

71.

72.

73.

74.

78.

78.

727

78.

122/2016

For new clutches, it is generally assumed that
^) Wear is uniform

B) Pressure is uniform

C) Both pressure and wear are uniform

D) None of these

The thermal efficiency of theoretical Otto cycle
A) Increases with increase in compression ratio
B) Increases with increase in isentropic index 7
C) 15 independent of pressure ratio

D) All the above

In Sl engines, supercharging leads to

A) Increase in BHP and decrease in thermal efficiency
B) Increase in thermal efficiency and decrease in ۳
C) Increase in both thermal efficiency and BHP

D) None of the above

Increase in compression ratio in a diesel engine
A) Increases ignition delay B) Reduces ignition delay
C) Keeps ignition delay constant D) Has no effect on ignition delay

Bleeding in steam turbines means

A) Removal of condensed steam

B) Extracted steam for preheating feed water
C) Leakage of steam

D) Steam doing no useful work

For a heat exchanger, the value of LMTD should be

A) As large as possible B) As small as possible
C) Constant D) None of these
1೧ a vapour compression refrigeration cycle, the lowest temperature occurs in
A) Compressor B) Condenser C) Evaporator D) Throttle valve
The psychrometric process involved in summer air conditioning is
A) Cooling and humidification B) Cooling and dehumidification
C) Evaporative cooling D) Sensible cocling
Cavitation in water turbine results in
A) Rough surfaces B) Noisy operation
C) Drop in discharge D) All the above
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