Q.1
In petrol engines, the delay period is of the order of
Q.2
It the temperature of intake air in IC engines is lowered, then its efficiency will
Q.3
If the intake air temperature of I.C. engine increases, its efficiency will
Q.4
The inlet value of a four stroke cycle I.C engine remains open for nearly
Q.5
If the temperature of intake air in internal combustion engine increases, then its efficiency will
Q.6
The probability of knocking in diesel engines is increased by
Q.7
As a result of detonation in an I.C. engine, following parameter attains very high value
Q.8
A higher compression ratio causes
Q.9
The pressure at the end of compression in the case of diesel engine is of the order of
Q.10
In a four stroke cycle petrol engine, the pressure inside the engine cylinder during the suction stroke is __________ the atmospheric pressure.
Q.11
The injector nozzle of a compression ignition engine is required to inject fuel at a sufficiently high pressure in order to
Q.12
In the crankcase method of scavenging, the air pressure is produced by
Q.13
The increase of efficiency of a compression ignition engine, as the load decreases, is due to
Q.14
All heat engines utilize
Q.15
In a four stroke cycle petrol engine, the charge is ignited at
Q.16
The spark ignition engines are governed by
Q.17
The compensating jet in a carburettor supplies almost constant amount of petrol at all speeds because the
Q.18
The correct sequence of the decreasing order of brake thermal efficiency of the three given basic types of engines is
Q.19
The compression ignition engines are governed by
Q.20
The process of breaking up or a liquid into fine droplets by spraying is called
Q.21
The air standard efficiency of an Otto cycle compared to diesel cycle for the given compression ratio is
Q.22
The correct mixture strength (by weight) for petrol is about
Q.23
Which of the following is not an intern’s combustion engine?
Q.24
The working cycle in case of four stroke engine is completed in following number of revolutions of crankshaft
Q.25
The following volume of air is required for consuming 1 liter of fuel by a four stroke engine
Q.26
Pick up the wrong statement about supercharging
Q.27
The voltage required to produce a spark across the gap, between the sparking points is
Q.28
The advancing of spark timing in spark ignition engines will _________ knocking tendency.
Q.29
Flash point of fuel oil is
Q.30
The higher combustion chamber wall temperature in compression ignition engines will _________ knocking tendency.
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