The specific fuel consumption for a petrol engine first decreases with increase in fuel air ratio and then increases with further increase in fuel air ratio. The minimum value occurs in the range of__________________?

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The inlet value of a four stroke cycle I.C engine remains open for nearly___________________?

A. 180° B. 125° C. 235° D. 200° E. 275°...

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 E. 20 : 1...

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...

Auto-ignition temperature is____________________?

A. minimum temperature to which 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. that at which it catches fire without external aid D. indicated by 90% distillation temperature, i.e., when 90% … Auto-ignition temperature is____________________?Read More...

The thermal efficiency of a two cycle engine as compared to four cycle engine is_________________?

A. more B. less C. same D. more upto some load and then less E. it may be less or more depending on several other factors...