Engineering Sciences
2022 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE XE 2022 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 91–93 of 175. Imported answers require review unless explicitly marked reviewed.
Question 91
Open questionXE-EMCQ1 markNeeds review
The temperature of the working fluid in a real heat engine cycle changes during heat addition and heat rejection processes. The maximum and minimum temperatures of the cycle are
and
, respectively. If
is the thermal efficiency of a Carnot engine operating between these temperature limits, then the thermal efficiency,
of the real heat engine satisfies the relationYour answerChoose one option.
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Open questionXE-ENAT1 markNeeds review
A 1.2 m
rigid vessel contains 8 kg of saturated liquid-vapor mixture at 150 kPa. The specific enthalpy of this mixture is ______ kJ/kg (round off to 2 decimal places).At 150 kPa:
m
/kg,
m
/kg,
kJ/kg,
kJ/kgLog in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 93
Open questionXE-ENAT1 markNeeds review
Air in a closed system undergoes a thermodynamic process from an initial temperature of 300 K to the final temperature of 400 K. The specific heat of air at constant volume,
varies linearly with the temperature,
(in K) as
Change in the specific internal energy of the air in the system is ______ kJ/kg (round off to 2 decimal places).
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