ISRO Scientist or Engineer Mechanical 2018

Instructions

For the following questions answer them individually

Question 1

An expansion process as per law PV = constant is known as

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Question 2

Speed of an aeroplane is measured by

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Question 3

Euler's dimensionless number relates the following

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Question 4

A simple compressible substance inside a cylinder undergoes a change of state quasistatically, isothermally and at constant pressure of 1.5 MPa. If the enthalpy change for the system is 4000 kJ at $$150^\circ C$$, what is the corresponding change in its entropy?

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Question 5

The velocity of sound in a gaseous medium at a temperature of 400 K is 400 m/s. If the temperature of the medium is increased to 600 K, the velocity of sound will be nearly,

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Question 6

Stress strain relation of the Newtonian fluid is

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Question 7

Speed of sound in water is equal to (K-bulk modulus, $$\rho$$-density)

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Question 8

If the stream function of a two dimensional flow is $$\psi = 5 xy$$. then the velocity at a point (3, 4)is

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Question 9

A glass tube of 8 mm diameter is immersed in water. Surface tension of water is 0.0075 kg/m and rise of water in the tube due to capillary effect is

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Question 10

An impulse turbine produces 125 hp under a head of 25 meter. By what percentage should the speed be increased for a head of 100 meter.

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ISRO Scientist or Engineer Mechanical 2018

An expansion process as per law PV = constant is known as

Speed of an aeroplane is measured by

Euler's dimensionless number relates the following

A simple compressible substance inside a cylinder undergoes a change of state quasistatically, isothermally and at constant pressure of 1.5 MPa. If the enthalpy change for the system is 4000 kJ at $$150^\circ C$$, what is the corresponding change in its entropy?

The velocity of sound in a gaseous medium at a temperature of 400 K is 400 m/s. If the temperature of the medium is increased to 600 K, the velocity of sound will be nearly,

Stress strain relation of the Newtonian fluid is

Speed of sound in water is equal to (K-bulk modulus, $$\rho$$-density)

If the stream function of a two dimensional flow is $$\psi = 5 xy$$. then the velocity at a point (3, 4)is

A glass tube of 8 mm diameter is immersed in water. Surface tension of water is 0.0075 kg/m and rise of water in the tube due to capillary effect is

An impulse turbine produces 125 hp under a head of 25 meter. By what percentage should the speed be increased for a head of 100 meter.

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