IC Engines - Interview Questions and Answers

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61. The operation of forcing additional air under pressure in the engine cylinder is known as
A. scavenging
B. turbulence
C. supercharging
D. pre-ignition
E. dissociation and carburretion of fuel.
Explanation:
62. Which of the following is false statement : Excess quantities of sulphur in diesel fuel are Objectionable because it may cause the following
A. piston ring and cylinder wear
B. formation of hard coating on piston skirts
C. oil sludge in the engine crank case
D. detonation
E. forms corrosive acids.
Explanation:
63. The reason for supercharging in any engine is to
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.
Explanation:
64. Supercharging is essential in
A. diesel engines
B. gas turbines
C. petrol engines
D. aircraft engines
E. marine engines.
Explanation:
65. In a cycle, the spark lasts roughly for
A. 1 sec
B. 0.1 sec
C. 0.01 sec
D. 0.001 sec
E. 0.0001 sec.
Explanation: