Most high speed compression engines operate on ___________________?

A. Otto cycle
B. Diesel cycle
C. Dual cycle
D. Carnot cycle

A diesel engine as compared to petrol engine (both running ar rated load) is ____________________?

A. More efficient
B. Less efficient
C. Equally efficient
D. Unperdictable

In a cycle, the spark lasts roughly for ____________________?

A. 1 sec
B. 0.1 sec
C. 0.01 sec
D. 0.001 sec

Which of the following is false statement. Some of the methods used to reduce diesel smoke are as follows ________________?

A. Using additives in the fuel
B. Engine derating i.e. reducing the maxi-mum flow of fuel
C. Increasing the compression ratio
D. Adherence to proper fuel specification

The magneto in an automobile is basically__________________?

C. Transformer
B. D.c. generator
C. Capacitor
D. Magnetic circuit

The operation of forcing additional air under pressure in the engine cylinder is known as________________?

A. Scavenging
B. Turbulence
C. Supercharging
D. Pre-ignition

Flash point of fuel oil is __________________?

A. Minimum temperature to which1 oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame
B. Temperature at which it solidifies or congeals
C. Temperature at which it catches fire without external aid
D. Indicated by 90% distillation temperature, i.e. when 90% of sample oil has distilled off

For the same power developed in I.C. engines, the cheaper system is_____________?

A. Naturally aspirated
B. Supercharged
C. Centrifugal pump
D. Turbo charger

Scavenging is usually done to increase__________________?

A. Thermal efficiency
B. Speed
C. Power output
D. Fuel consumption

The theoretically correct air fuel ratio for petrol engine is of the order of___________________?

A. 6 : 1
B. 9 : 1
C. 12 : 1
D. 15 : 1