In actual practice, the inlet value of a four stroke I.C. engine should open
A.exactly at the start of suction stroke
B.slightly after the start of suction stroke
C.slightly before the start of the suction stroke
D.none of the above
Category: Automobile Engineering Mcqs
In a multi-cylinder engine, missing in one cylinder is likely to result from
A.Clogged exhaust
B.Vapour lock
C.A defective spark plug
D.An overheated engine
E.None of the above
Piston compression rings are made of
A.Cast iron
B.Steel
C.Aluminium
D.Bronze
E.White metal
A laminated glass upon cracking
A.Bursts into sharp edged fragments
B.Bursts into granular pieces
C.Sandwitched layer traps the fragments
D.Breaks into the form of crystals
E.None of the above
The firing order in case of four cylinder in-line engines is uaually
A.1-2-4-3
B.1-3-4-2
C.1-4-3-2
D.Either (A) or (B)
E.Either (B) or (C)
Which of the following part is not needed on spark ignition engines using magneto ignition?
A.Battery
B.Spark plug
C.Distributor
D.Induction coil
Synthetic rubber is made of
A.Crude oil
B.Mineral oil
C.Starch
D.Butadiene
E.Coal
In a S.I. engine high air velocity through air hom may be of the order of
A.1 m/s
B.5 m/s
C.10 m/s
D.50 m/s
E.100 m/s
As carbon accumulates in a cylinder it causes an increase in
A.Clearance volume
B.Piston displacement
C.Ignition time
D.Volumetric efficiency
E.Effective compression ratio
In case of four cylinder in line engine, the number of firing stroke (s) in one revolution of crank is
A.1
B.2
C.3
D.4
E.Depends on the design of engine.
