Q.1
In a four stroke cycle engine, the sequence of operations is
Q.2
In loop scavenging, the top of the piston is
Q.3
The specific fuel consumption per BHP hour for diesel engine is approximately
Q.4
The maximum propulsive efficiency of a turbojet engine is at a speed of
Q.5
The method of determination of indicated power of a multi cylinder spark ignition engine is by the use of
Q.6
The air-fuel ratio of the petrol engine is controlled by
Q.7
The actual volume of fresh charge admitted in 4-stroke petrol engine is
Q.8
The ratio of the volume of charge admitted at N.T.P. to the swept volume of the piston is called
Q.9
The air-fuel ratio in petrol engines is controlled by
Q.10
A gas engine has a swept volume of 300 cm3 and clearance volume of 25 cm3. Its volumetric efficiency is 0.88 and mechanical efficiency is 0.90. The volume of the mixture taken in per stroke is
Q.11
In order to prevent knocking in spark ignition engines, the charge away from the spark plug should have
Q.12
The inlet valve of a four stroke cycle internal combustion engine remains open for
Q.13
The pressure at the end of compression, in diesel engines, is approximately
Q.14
The pressure at the end of compression, in petrol engines, is approximately
Q.15
The turbine of the turboprop engine is __________ that of the turbojet engine.
Q.16
When crude oil is heated, then which of the following hydrocarbon is given off first?
Q.17
Air fuel ratio for idling speed of a petrol engine is approximately
Q.18
The specific fuel consumption per BH hour for a petrol engine is approximately
Q.19
Which one of the following event would reduce volumetric efficiency of a vertical compression ignition engine?
Q.20
Which of the following does not relate to a compression ignition engine?
Q.21
Which of the following does not relate to a spark ignition engine?
Q.22
Engine pistons are usually made of aluminium alloy because it
Q.23
The reason for supercharging in any engine is to
Q.24
The output of a diesel engine can be increased without increasing the engine revolution or size in following way
Q.25
The scavenging efficiency of a four stroke cycle diesel engine is
Q.26
Morse test can be conducted for
Q.27
The cetane (C₁₆H₃₄) which is a straight chain paraffin, is assigned a cetane number of
Q.28
Scavenging is usually done to increase
Q.29
Which of the following medium is compressed in a Diesel engine cylinder?
Q.30
Alpha-methyl-naphthalene (C₁₁ H₁₀) has a cetane number of
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