## Q#1) In one stage air compressor test, assume that 1.3 is the exponent index of a polytropic proc...

Thermodynamic lab

Q#1) In one stage air compressor test, assume that 1.3 is the exponent index of a polytropic process, the manometer reading (21.5mmH2O), the volumetric efficiency is 85%, and the compressor driven power is 1.97 kW, and the inlet and outlet air temperatures 20 C and 35 C respectively, choose the correct answer: 1- the air volumetric flow rate in m/s is. d) 3.8E-3 d) 1.75 a) 3.2E-4 b) 338-4 c)3.3E-3 2-polytropic compressor power input in kW. a) 0.7 b) 1.0 c) 1.24 3- swept volume for the two cylinders of the compressor in m/s. a) 3.SEA , b) 4.5E-4 c) 4.5E-3 4-polytropic efficiency is a) 63 % b)73% c) 83 % d) 3.5E-4 d) 93% 5- the effect of increase the intake temperature of the air will a) reduce vol b) increase Tvol ) increase comp. Work d) a and 6- when the compressor pressure ratio Pa/Pi increase, the volumetric efficiency and mass rate will a) Increase b) decrease c) mass rate increase only d) else 7- If Pi= 1 bar, then Pa will be: a) 7 bar b) 9.5 bar c) 11.3 bar d) 15.2 bar

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Mechanical Engineering
1 Answer
Vansh Bhatnagar
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