The efficiency of mechanical brakes is usually
A.99 percent
B.95 – 98 percent
C.85 – 95 percent
D.60 – 70 percent
E.30 – 40 percent
Category: Automobile Engineering Mcqs
Ignition quality of petrol is expressed by
A.Calorific value
B.Octane no
C.Cetane no
D.Mass/volume ratio
The boiling point of Diesel fuel may be expected to be in the range
A.70?C to 100?C
B.100?C to 112?C
C.125?C to 135?C
D.150?C to 200?C
E.220?C to 375?C
A hot plug has a
A.Long heat path
B.Short heat path
C.Heat dam
D.Short insulator
E.Long insulator
The power developed in four stroke I.C. engine, for the same engine speed and cylinder volume, as compared to that of a two stroke engine is
A.two times
B.equal
C.one half
D.none of the above
For balancing single cylinder engine a counter weight is added to
A.Piston
B.Connecting rod
C.Crankshaft
D.Gudgeon pin
E.Piston rings
In automobile ignition system contact breaker is used for
A.Opening and closing the primary circuit
B.opening and closing the secondary circuit
C.increasing the duration of spark
D.increasing the intensity of spark
In case of petrol engines, into the engine cylinder during suction stroke
A.air and fuel is drawn
B.only fuel is drawn
C.only air is drawn
D.none of the above
Connecting rods are generally of the following form:
A.Forged I section
B.Forged round section
C.Cast iron triangular section
D.Cast iron square section
E.Forged square section steel
The pressure of air for braking in case of heavy duty trucks in usually of the order of
A.1 to 2 atm
B.2 to 3 atm
C.4 to 7 atm
D.14 to 17 atm
E.Depends upon the road conditions
