Steam and Gas Turbines Questions and Answers – Cooling of Gas Turbine Blades

This set of Steam and Gas Turbines Multiple Choice Questions & Answers (MCQs) focuses on “Cooling of Gas Turbine Blades”.

1. Cooling is classified into ________
a) air cooling
b) liquid cooling
c) air & liquid cooling
d) none of the mentioned
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2. Liquid cooling method has _______
a) high specific heat capacity
b) low specific heat capacity
c) low evaporative cooling
d) none of the mentioned
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3. In liquid cooling leakages are _________
a) increases
b) reduced
c) equal in both air and liquid cooling
d) none of the mentioned
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4. Quality of air required for air cooling is ______
a) 1-3 %
b) 2-5 %
c) above 5 %
d) none of the mentioned
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5. By liquid cooling blade temperature can be reduced by ________
a) 300 – 400%
b) 200 – 300%
c) 100 – 500%
d) none of the mentioned
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6. For air cooling,cooling air comes from _________
a) compressor
b) atmosphere
c) condenser
d) none of the mentioned
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7. In impingement cooling ___________
a) cooling is done by fins
b) by making air with high velocity to hit the blades
c) holes in the blades
d) none of the mentioned
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8. In impingement cooling majority of cooling is done by ________
a) convection
b) conduction
c) radiation
d) none of the mentioned
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9. Impingement cooling is used for lesser loads of heating.
a) True
b) False
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10. In cooling effusion blade surface is made of _______
a) porous material having small orifice
b) fins
c) with larger surface area
d) none of the mentioned
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Sanfoundry Global Education & Learning Series – Steam and Gas Turbines.

To practice all areas of Steam and Gas Turbines, here is complete set of 1000+ Multiple Choice Questions and Answers.