For maximum power generation, the air fuel ratio for a petrol engine for vehicles, is of the order of _________________?

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A diesel engine has_________________?

A. 1 valve B. 2 valves C. 3 valves D. 4 valves E. no valve...

If the intake air temperature of I.C. engine increases, its efficiency will_________________?

A. increase B. decrease C. remain same D. unpredictable E. depend on other factors...

Cetane___________________?

A. has zero cetane number B. has 100 cetane number C. helps detonation D. is a straight chain paraffin E. determines the efficiency of an I.C. engine...

Ignition quality of diesel-fuel oil is expressed by an index called__________________?

A. octane number B. cetane number C. calorific value D. carbon content E. ignition temperature...

In the case of petrol engine at maximum output, the percentage of CO in exhaust gases is ____________________?

A. Zero B. 5-10% C. Depends on load and quality of fuel D. Considerable percent...