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IC Engines and Nuclear Power Plants Questions And Answers.

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Exercise :: IC Engines and Nuclear Power Plants
1.The reference fuels for knock rating of spark ignition engines would include
A. iso-octane and alpha-methyl naphthalene
B. normal octane and aniline
C. iso-octane and normal hexane
D. normal heptane and iso-octane
2.In a four stroke cycle, the minimum temperature inside the engine cylinder occurs at the
A. beginning of suction stroke
B. end of suction stroke
C. beginning of exhaust stroke
D. end of exhaust stroke
3.The thermal efficiency of a standard Otto cycle for a compression ratio of 5.5 will be
A. 25%
B. 50%
C. 70%
D. 100%
4.The ratio of the volume of charge admitted at N.T.P. to the swept volume of the piston is called
A. mechanical efficiency
B. overall efficiency
C. volumetric efficiency
D. relative efficiency
5.The exhaust valve in a four stroke cycle petrol engine
A. opens at 50° before bottom dead centre and closes at 15° after top dead centre
B. opens at bottom dead centre and closes at top dead centre
C. opens at 50° after bottom dead centre and closes at 15° before top dead centre
D. may open and close anywhere