SSC JE Mechanical Engineering 2nd March 2017 Shift-1

Instructions

For the following questions answer them individually

Question 41

The difference of absolute pressure and local atmospheric pressure is known as _____

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Question 42

The sum of pressure head and elevation head is known as _____.

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Question 43

Specific gravity is defined as the ratio of density of fluid and density of water at which temperature (in $$^\circ$$ C)

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Question 44

- Falling drops of water become spheres due to the property of _____.

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Question 45

Fluid flow in a straight circular pipe is typically laminar in nature when the Reynolds number is _____.

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Question 46

The reduction in fluid pressure that results when a fluid flows through a constricted section of a pipe is known as _____.

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Question 47

For a compressible flow, Mach Number (M) is given by which of the following expression? where v = velocity of fluid in compressible flow c = speed of sound in air

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Question 48

Which type of forces dominates a fluid flow with a very high Reynolds Number ($$R_e \approx 10000$$)?

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Question 49

To avoid cavitation in centrifugal pumps __

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Question 50

For the continuity equation given by $$\overrightarrow{\triangledown}.\overrightarrow{V} = 0$$ to be valid, where $$\overrightarrow{V}$$ is the velocity vector, which one of the following Is a necessary condition?

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