IC Engine Questions and Answers – Heat Rejection

This set of IC Engines Multiple Choice Questions & Answers (MCQs) focuses on “Heat Rejection”.

1. The transfer of heat takes place due to difference in temperature and from higher temperature to lower temperature.
a) True
b) False
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2. The hot gases give part of their heat to ____________
a) cylinder liner
b) piston and piston rings
c) cylinder head
d) all of the mentioned
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3. Most of the heat is carried away by the cooling system while some are lost by direct radiation from the engine surfaces.
a) True
b) False
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4. At the end of the induction stroke the temperature is that of clearance gases.
a) True
b) False
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5. As the cool mixture is inducted into the engine cylinder the temperature rises rapidly.
a) True
b) False
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6. During compression process the temperature ____________ and attains its maximum value at the end of combustion process.
a) decreases
b) increases
c) remains same
d) none of the mentioned
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7. During the expansion process the temperature ____________ and then drops very rapidly during the release process.
a) decreases
b) increases
c) remains same
d) none of the mentioned
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8. Inadequate lubrication of the engine, due to oil not being warm enough to flow freely, results in greater frictional losses.
a) True
b) False
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9. A hot-spot outside the combustion chamber may be sufficient to cause pre-ignition.
a) True
b) False
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10. If the engine is overcooled some of the heat which could be used to expand the gases will be lost.
a) True
b) False
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Sanfoundry Global Education & Learning Series – IC Engine.

To practice all areas of IC Engine, here is complete set of 1000+ Multiple Choice Questions and Answers.