Auto-ignition reaction time for petrol engine first decreases with increase in fuel air ratio, reaches a minimum value and then increases with subsequent increase in fuel air ratio. The minimum value occurs in the region of________________?

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Crankcase explosion in I.C. engines usuall occurs as ___________________?

A. first a mild explosion followed by a bi explosion B. first a big explosion followed by a mil explosion C. both mild and big explosions occi simultaneously D. never occurs E. unpredictable...

The temperature of interior surface of cylinder wall in normal operation is not allowed to exceed____________________?

A. 80°C B. 120°C C. 180°C D. 240°C E. 320°C...

The fuel air ratio in a petrol engine fitted with suction carburettor, operating with dirty air filter as compared to clean filter will be________________?

A. higher B. lower C. remain unaffected D. unpredictable E. none of the above...

The most popular firing order in case of four cylinder in-line I.C. engine is__________________?

A. 1-2-3-4 B. 1-3-2-4 C. 1-4-2-3 D. 1-2-4-3 E. 1-3-4-...

A two stroke crank compressed engine has following ports in the cylinder_______________?

A. suction port and exhaust port B. transfer port only C. suction port and transfer port D. transfer port and exhaust port E. suction port, exhaust port and transfer port...