161. The increase in pressure in a roots blower is entirely due to back flow of air.
[A]. Agree
[B]. Disagree
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✅ The correct answer is option A.
Compressors, Gas Dynamics and Gas Turbines MCQs
162. The maximum combustion pressure in gas turbine is __________ as compared to I.C. engine.
[A]. more
[B]. less
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✅ The correct answer is option B.
163. The maximum delivery pressure in a rotary air compressor is
[A]. 10 bar
[B]. 20 bar
[C]. 30 bar
[D]. 50 bar
✅ The correct answer is option A.
164. The compression ratio in a gas turbine is
[A]. 4
[B]. 1
[C]. 9
[D]. 12
✅ The correct answer is option B.
165. The actual volume of air delivered by a compressor, When reduced to the normal temperature and pressure conditions is called compressor capacity.
[A]. Yes
[B]. No
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✅ The correct answer is option B.