The turbulence in diesel engine ensures to
A.Increase the volumetric efficiency
B.Increase the compression pressure
C.Bring the fuel quickly in contact with air
D.Increase the fuel consumption
E.Reduce the engine vibrations
Category: Automobile Engineering Mcqs
To avoid chances of maisalignment the bearing generally used is
A.Radial bearing
B.Axial bearing
C.Taper roller bearing
D.Self-aligning bearing
E.Double row ball bearing
In commercial vehicle layouts engine is located forward, rear or under floor mainly to
A.Better utilise the space
B.Increase fuel economy
C.Have better weight distribution
D.Reduce the weight of chassis
E.Minimize the tendency to over turn
The operation of removing trapped air from hydraulic braking system is known as
A.Trapping
B.Tapping
C.Pressurization
D.Bleeding
E.Clearing
Mixing of fuel and air in case of a diesel engine occurs in
A.Fuel pump
B.Injector
C.Inlet manifold
D.Inlet valve
E.Engine cylinder
Circumferential grooves on tyres
A.Lessen the danger of skidding
B.Increase load carrying capacity
C.Provide good traction
D.Remove any stones etc. from sticking to the tyre
E.All of the above
Too rich mixture for a S.I. engine means air : fuel ratio of about
A.17 ; 1
B.15 ; 1
C.14 ; 1
D.13 ; 1
E.10 ; 1
A smoky blue exhaust is due to
A.Excessive air
B.Excessive rich mixture
C.Burning of oil in combustion chamber
D.Incorrect valve adjustment
E.Incorrect tappet adjustment
The phenomenon that causes pressure waves resulting in vibration of structure, rough running and melting of piston is
A.detonation
B.pre-ignition
C.knocking
D.none of the above
When fully charged, the terminal voltage per cell for a battery is
A.1.5 volts
B.1.7 volts
C.2.7 volts
D.6 volts
E.12 volts
