GATE XE 2024 Paper 1 — page 35

Complete GATE XE 2024 Paper 1 overview, original pages and practice · Timed previous-paper practice

Questions 103–105 of 175. Imported answers require review unless explicitly marked reviewed.

Paper practice 175 questionsPage 35 of 59

Consider the following data from a Brayton cycle.

Enthalpy at inlet to turbine: 1400 kJ/kg

Enthalpy at exit of turbine: 880 kJ/kg

Enthalpy at exit of compressor: 600 kJ/kg

On adding a regenerator of effectiveness equal to 0.8, the absolute value of percentage change in heat addition is ________ (rounded off to the nearest integer).

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An ideal gas undergoes a series of reversible steady state, steady flow processes between states 1, 2 and 3. Process 1→2 satisfies the relation

, where pressure, P is in kPa and specific volume, v is in m³/kg. Process 2→3 is isobaric. Given that

m³/kg,

, the total work done per unit mass (in kJ/kg) in the series of processes 1→2→3 is ________ (rounded off to the nearest integer).

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Air (assumed as an ideal gas) with a mass flow rate of 2.5 kg/s enters a horizontal nozzle at 350 K, 350 kPa with a velocity of 3 m/s. The air exits the nozzle at a pressure of 101.5 kPa and temperature 305 K with a Mach number of

. Assuming steady state operation and constant properties given in the data, the ratio of inlet area to exit area required to satisfy the exit condition is ________ (rounded off to one decimal place).

Use the following data:

kJ/kg.K,

kJ/kg.K

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2024 · Paper 1

Question 103

Question 104

Question 105