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SSC JE Mechanical 2017- Daily Quiz 15

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Question 1

For a multistage compressor, the polytropic efficiency is

Question 2

The hydrodynamic boundary layer thickness is defined as the distance from the surface where the _________.

Question 3

Ratio of specific heat for an ideal gas is given by

Question 4

In a perfect gas having ratio of specific heats as 1.4, what is the strength of a normal shock with upstream Mach number equal to 5.0 ?

Question 5

In sand moulding, the bottom most part of the flask is called 
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