GATE XE 2023 Paper 1 — page 34

Complete GATE XE 2023 Paper 1 overview, original pages and practice · Timed previous-paper practice

Questions 100–102 of 175. Imported answers require review unless explicitly marked reviewed.

Paper practice 175 questionsPage 34 of 59

Match the following:

Thermodynamic function/equation	Expression
A1 Helmholtz function (a)	B1
A2 Gibbs function (g)	B2
A3 T-ds equation	B3
A4 Clapeyron-Clausius equation	B4

Your answerChoose one option.

A1→B2, A2→B4, A3→B1, A4→B3

A1→B4, A2→B2, A3→B1, A4→B3

A1→B2, A2→B4, A3→B3, A4→B1

A1→B4, A2→B2, A3→B3, A4→B1

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A piston-cylinder device initially contains 1 m

of air at 200 kPa and 25 °C. Air expands at constant pressure while a heater of 250 W is switched on for 10 minutes. There is a heat loss of 4 kJ during this process. Assuming air as an ideal gas, the final temperature of air is ______ °C (rounded off to one decimal place).

Use the following data for air:

kJ/kg-K,

kJ/kg-K

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Steam at 2 MPa and 300 °C steadily enters a nozzle of inlet diameter of 20 cm. Steam leaves the nozzle with a velocity of 300 m/s. The mass flow rate of steam through the nozzle is 10 kg/s. Assume no work interaction and no change in potential energy. If the heat loss from the nozzle per kg of steam is 3 kJ, the exit enthalpy per kg of steam is ______ kJ (rounded off to nearest integer).

Use the following data for steam:

At 2 MPa and 300 °C:

/kg,

kJ/kg

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2023 · Paper 1

Question 100

Question 101

Question 102