UPSC ESE 2019 Mechanical Engineering Paper

© examsnet.com

Question : 135 of 150

Marks: +1, -0

An air compressor compresses atmospheric air at 0.1 MPa and

27^{\circ}\ \mathrm{C}

by 10 times of air inlet pressure. During compression, the heat lost to the surrounding is estimated to be

5 \%

of compression work. Air enters the compressor with a velocity of

40\ \text{m/s}

and leaves with

100\ \text{m/s}

. The inlet and exit cross-sectional areas are

100\ \mathrm{cm}^2

20\ \mathrm{cm}^2

respectively. The temperature of air at the exit from the compressor will be

1498 K
1574 K
1654 K
1726 K

Go to Question:

Advertisements