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SSC JE 2019 - 20 Technical Quiz 58

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Question 1

A stream function is given by ψ = 2x²y + (x + 1)y² . The flow rate across a line joining point A(3, 0) & B(0, 2) is _______.

Question 2

A fluid having a density of 1 g/cc is in a state with Grashof number 2 × 10⁶ and prandtl number 0.7. Assuming acceleration due to gravity as 10 m/s², calculate the Rayleigh number?

Question 3

What does 18-8 steel stands for?

Question 4

When the thickness of lubrication is of the order of microns then, the lubrication is called

Question 5

Availability function for a closed system is given by _______.

Question 6

Which of the following is a boiler accessory?

Question 7

For a thin spherical pressure vessel, volumetric strain developed in the wall will be _____.

Question 8

What is the value of critical damping coefficient for a system employing mass of 8kg and the elastic stiffness is 4.5kg/

Question 9

The heat removal rate from a refrigerated space is 7.2 kW and the power input to the compressor is 1.8 kW. The coefficient of performance (COP) of the refrigerator is

Question 10

A sine bar is specified by

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