D:-Cam shaft
Correct Answer:- Option-B
Question19:-A dish in the piston head is employed to
A:-Decrease piston weight
B:-Provide valve clearance
C:-Adjust piston displacement
D:-Control compression ratio
Correct Answer:- Option-D
Question20:-Which tool is used for removing the piston rings from a piston?
A:-Piston ring expander
ston ring compressor
C:-Piston ring lifter
D:-Piston ring squeezer
Correct Answer:- Option-A
Question21:-Valve overlap is the number of degrees of crankshaft rotation during which
A:-the values are moving from fully closed to the timing point
B:-both intake and exhaust valves are closed
C:-both intake and exhaust valves are open
D:-the valve float
Correct Answer:- Option-C
Question22:-What is the effect if thermostat valve is stuck in closed position?
A:-Engine gets over cooling
B:-Engine gets over heating
C:-Engine does not start
D:-Engine does not stop
Correct Answer:- Option-B
Question23:-What is the reason if oil pump does not suck the oil?
A:-Filter clogged
B:-Relief valve struck
:-More backlash
D:-Less radial clearance
Correct Answer:- Option-C

Question24:-Percentage of fuel energy lost to the cylinder walls in an automobile
engine is approximately

A:-1 percent
B:-10 percent
C:-80 percent
D:-25 percent
Correct Answer:- Option-D
Question25:-The impeller type exhauster has
A:-One spindle
B:-Two spindle
C:-Three spindle
D:-No spindle
Correct Answer:-Question Cancelled
Question26:-Which are the materials commonly used in the catalytic converter?
A:-Chromium and vanadium
B:-Zinc and molybdenum
C:-Asbestos and ceramics
D:-Palladium and platinum
Correct Answer:- Option-D
Question27:-The basic difference between the supercharger and the turbocharger is in
A:-the way they are driven
B:-the size of the unit
C:-the number of waste gates
D:-the pressure they produce
Correct Answer:- Option-A
Question28:-The fuel injection timing in a distributor type pump is controlled by
A:-changing plunger stroke