Q.1
A heat engine utilizes the
Q.2
The object of providing masked inlet valve in the air passage of compression ignition engines is to
Q.3
Installation of supercharger on a four cycle diesel engine can result in the following percentage increase in power
Q.4
If the compression ratio of an engine working on Otto cycle is increased from 5 to 7, the percentage increase in efficiency will be
Q.5
An engine indicator is used to determine the following
Q.6
In the opposed piston diesel engine, the combustion chamber is located
Q.7
A diesel engine, during suction stroke, draws
Q.8
The operation of forcing additional air under pressure into the engine cylinder is known as
Q.9
Supercharging is essential in
Q.10
Morse test is used to determine the I.P. of a
Q.11
The effective inhibitor of pre-ignition is
Q.12
The brake power (B.P.) of the engine is given by (where W = Brake load or dead load in newtons, l = Length of arm in meters, N = Speed of engine in r.p.m., S = Spring balance reading in newtons, D = Dia. of brake drum in meters, and d = Dia. of rope in meters)
Q.13
The air requirement of a petrol engine during starting compared to theoretical air required for complete combustion is
Q.14
Which of the following fuel detonates readily?
Q.15
A mixture containing 65% of iso-octane and 35% of normal heptane will have
Q.16
If the speed of the engine is increased, the indicated power will
Q.17
In an internal combustion engine, the process of removing the burnt gases from the combustion chamber of the engine cylinder is known as
Q.18
Which of the following statement is correct regarding petrol engines?
Q.19
The firing order in an I.C. engine depends upon
Q.20
The delay period in compression ignition engines depends upon
Q.21
The ignition of the charge by some hot surface within the engine before the passage of spark is called
Q.22
The air standard efficiency of an I.C. engine is given by (where r = Compression ratio, and γ = Ratio of specific heats)
Q.23
Pour point of fuel oil is the
Q.24
The function of a distributor in a coil ignition system of I.C. engines is
Q.25
Scavenging air in diesel engine means
Q.26
The colour of exhaust from diesel engine is generally
Q.27
The frictional power (F.P.) is given by
Q.28
Compression ratio of I.C. Engines is
Q.29
The pressure and temperature at the end of compression stroke in a petrol engine are of the order of
Q.30
If petrol is used in a diesel engine, then
0 h : 0 m : 1 s