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UP Polytechnic Lecturer: Mechanical Paper -2 || Quiz 10

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Question 1

Laminar developed flow at an average velocity of 5 m/s occurs in a pipe of 10 cm radius. The velocity at 5 cm radius is

Question 2

The wet bulb depression is zero, when relative humidity is equal to ________.

Question 3

Reduced pressure is

Question 4

An ideal gas at 27⁰C is heated at constant pressure till the volume becomes three times. The temperature of the gas will then be___.

Question 5

A thermal energy reservoir of 1200 K, can supply heat at a rate of 120000 kJ/h. If environment temperature is 27 °C, then the exergy (in kW) of this supplied energy is

Question 6

Intensity of radiation at a surface in perpendicular direction is equal to:

Question 7

For a certain 2-D incompressible flow the velocity is given by

. Find the equation of streamline passing through the point (2,2)

Question 8

The efficiency of a simple gas turbine can be improved by using a regenerator, because the

Question 9

The process of heat transfer from a hot body to a cold body is straight line, without affecting the intervening medium, is known as ________.

Question 10

Match List-I with List-II and select the correct answer using the code given below the list :
List-I
A. Capillarity
B. Vapour pressure
C. Viscosity
D. Specific gravity
List-II
1) Cavitation
2) Density of water
3) Shear forces
4) Surface tension

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AE & JE Exams Mechanical Engineering

Dec 10AE & JE Exams