NHPC JE'21 ME: Daily Practices Quiz. 18-Nov-2021 |_00.1
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NHPC JE’21 ME: Daily Practices Quiz. 18-Nov-2021

Quiz: Mechanical Engineering
Exam: NHPC JE
Topic: Miscellaneous

Each question carries 1 mark
Negative marking: 1/4 mark
Time: 6 Minutes

Q1. A fluid behave as an ideal gas provided it is at :
(a) High Temperature and Pressure
(b) High Temperature and Moderate Pressure
(c) Low Temperature and Pressure
(d) High Temperature and Low Pressure

Q2. The temperature of an ideal gas always deceases during
(a) Isobaric expansion
(b) Isothermal expansion
(c) Adiabatic expansion
(d) Isentropic expansion

Q3. The throttling operation in a refrigeration cycle is carried out in
(a) Evaporator
(b) Condenser
(c) Expansion valve
(d) Capillary tube

Q4. The leakage in a refrigeration system using ammonia is detected by
(a) Halide torch
(b) Sulphur sticks
(c) Soap solution
(d) Hot water

Q5. If a beam is supported on more than two supports, is called a:
(a) Continuous beam
(b) Simply supported beam
(c) Encastered beam
(d) build in beam

Q6.A cylinder is said to be thin if the thickness to diameter ratio is less than-
(a) 1/5
(b) 1/10
(c) 1/15
(d) 1/20

Solutions

S1. Ans. (d)
Sol. A fluid obeys perfect gas or ideal gas at high temperature and low pressure

S2. Ans. (d)
Sol. The temperature of an ideal gas always decreasing during isentropic expansion.

S3. (d)
Sol. The throttling operation in a refrigeration cycle is carried out in capillary tube.

S4. Ans. (b)
Sol. The leakage in a refrigeration system using ammonia is detected by Sulphur sticks.

S5. Ans.(a)
Sol. if a beam is supported on more than two supports is called continuous beam.

S6. Ans.(d)
Sol. A cylinder is solid to be thin if the thickness to diameter ratio,
(t/D)<1/20

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Published by VINAYAK KUMAR

Graduated from BIT Sindri, Postgraduated from IIT BHU Varanasi

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