GATE ME 2021 Paper 2 — page 11

Questions 31–33 of 65. Imported answers require review unless explicitly marked reviewed.

Consider an ideal vapour compression refrigeration cycle working on R-134a refrigerant. The COP of the cycle is 10 and the refrigeration capacity is 150 kJ/kg. The heat rejected by the refrigerant in the condenser is ______ kJ/kg (round off to the nearest integer).

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A rigid tank of volume 50 m³ contains a pure substance as a saturated liquid vapour mixture at 400 kPa. Of the total mass of the mixture, 20% mass is liquid and 80% mass is vapour. Properties at 400 kPa are:

m³/kg,

m³/kg. The total mass of liquid vapour mixture in the tank is ______ kg (round off to the nearest integer).

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An object is moving with a Mach number of 0.6 in an ideal gas environment, which is at a temperature of 350 K. The gas constant is 320 J/kg.K and ratio of specific heats is 1.3. The speed of object is ______ m/s (round off to the nearest integer).

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2021 · Paper 2

Question 21

Question 22

Question 23