If overhead clearance is less, then the following type of engine should be selected__________________?

A. V-type
B. In-line
C. Vertical
D. Horizontal

Piston rings are usually made of___________________?

A. Cast iron
B. Aluminium
C. Phosphor bronze
D. Babbitt

The top piston ring nearer to the piston crown is known as_____________________?

A. Compression ring
B. Oil ring
C. Scrapper ring
D. Groove ring

Which is false statement about advantages of V-type engine_________________?

A. compact design requiring lesser space
B. improved distribution of air to cylinder
C. casting less liable to distortion
D. reduced torsional vibration because of shorter crankshaft

Detonation is caused by the following unstable compounds______________________?

A. Peroxides, aldehydes and ketones
B. Peroxides, aldehydes, oxides and sul-phides
C. Aldehydes, oxides and ketones
D. Ketones and sulphur compounds

The thermal efficiency of a petrol engine of two stroke with crank case scavenging as compared to four stroke petrol engine with same comperssion ratio will be_____________________?

A. Higher
B. Lower
C. Same
D. Depends on size of engine

The function of a fuel pump in a petrol pump is to______________________?

A. Inject fuel in cylinder
B. Supply fuel when carburettor fails
C. Pump fuel so that it reaches carburettor (to improve thermal efficiency)
D. Does not exist

The spark plug gap is normally maintained at________________?

A. 0.1 to 0.2 mm
B. 0.2 to 0.4 mm
C. 0.45 to 0.6 mm
D. 0.6 to 0.8 mm

The delay period in petrol engine is of the order of__________________?

A. 0.001 sec
B. 0.002 see
C. 0.01 sec
D. 0.05 sec

Petrol is distilled at a temperature in range of__________________?

A. 30 – 65°c
B. 65 – 220°c
C. 220-350°c
D. 350-450°c