Category: I.C. Engines

A. increase efficiency
B. increase power
C. reduce weight and bulk for a given out-put
D. effect fuel economy
E. none of the above

A. peroxides, aldehydes and ketones
B. peroxides, aldehydes, oxides and sul-phides
C. aldehydes, oxides and ketones
D. ketones and sulphur compounds
E. none of the above

A. high compression ratio
B. low compression ratio
C. low volumetric efficiency
D. minimum turbulence
E. high power output and high thermal efficiency

A. increase
B. decreae
C. be unaffected
D. depend on other factors
E. unpredictable

A. equal to stroke volume
B. equal to stroke volume and clearance volume
C. less than stroke volume
D. more than stroke volume
E. more than cylinder volume

A. ignition coil
B. ignition coil and distributor
C. ignition coil and condenser
D. ignition coil and contact breaker
E. ignition coil, contact breaker and con-denser

A. All the irreversible engines have same efficiency
B. All the reversible engines have same efficiency
C. Both Rankine and Caront cycles have same efficiency between same temperature limits
D. All reversible engines working between same temperature limits have same-efficiency
E. Between same temperature limits, both petrol and diesel engines have same efficiency

A. 2%
B. 4%
C. 8%
D. 14%
E. 27%.

A. 1500 rpm
B. 750 rpm
C. 3000 rpm
D. any value independent of engine speed
E. none of the above

A. varying compression ratio
B. using lian mixture
C. retarding the spark timing
D. reducing the r.p.m.
E. increasing inlet pressure