Engineering Sciences
2017 · Paper 1
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Complete GATE XE 2017 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 88–90 of 175. Imported answers require review unless explicitly marked reviewed.
Question 88
Open questionXE-EMCQ2 marksNeeds review
In a polytropic compression process, one kg of an ideal gas having a molecular weight of 40 kg/kmol is compressed from 100 kPa, 300 K to 400 kPa, 360 K. The magnitude of the work in kJ for the process is
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Open questionXE-ENAT2 marksNeeds review
Two streams of air (
J/kg.K) flow through insulated pipes 1 and 2 with the conditions as shown in figure. They mix in an insulated pipe-3 and the mixture steadily exits with a velocity of 100 m/s at 150 kPa. Neglecting the change in potential energy in all the pipes, the exit area of the pipe-3 in m² (up to 3 decimal places) is ________. 
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 90
Open questionXE-ENAT2 marksNeeds review
A 1 m³ rigid vessel contains air at 200 kPa. A vacuum pump is connected to the vessel in order to control the pressure inside. The volume flow rate of air through the pump is maintained at a constant value of 0.1 m³/s. If the pump operates for 10 seconds and the temperature of the air is maintained constant during operation, the pressure in the tank in kPa after 10 seconds (up to 2 decimal places) is ________.
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