Piston rings are plated with chromium,cadmium or phosphate in order to__________________?

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The rating of a diesel engine, with increase in airintlet temperature, will ___________________?

A. increase linearly B. decrease linearly C. increase parabolically D. decrease parabolically E. first decrease linearly and then increase parabolically...

The working cycle in case of four stroke engine is completed in following number of revolutions of crankshaft___________________?

A. 1/2 B. 1 C. 2 D. 4 E. 8...

Polymerisation is a chemical process in which molecules of a compound become________________?

A. larger B. slowed down C. smaller D. liquid E. gaseous...

Detonation is caused by the following unstable compounds______________________?

A. peroxides, aldehydes and ketones B. peroxides, aldehydes, oxides and sul-phides C. aldehydes, oxides and ketones D. ketones and sulphur compounds E. none of the above...

The ash content in diesel oil should bot be more than_______________?

A. 1% B. 5% C. 0.1% D. 0.01% E. 0.001%...