SSC JE Mechanical Engineering 1st March 2017 Shift-1

Instructions

For the following questions answer them individually

Question 151

Hydraulic grade line for any flow system as compared to energy line is ______.

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Question 152

To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than _____.

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Question 153

The locus of elevations that water will rise in a series of pitot tube is called ______.

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Question 154

Pressure in Pascals at a depth of 1 m below the free surface of a body of water will be equal to _______.

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Question 155

Water flows up a tapered pipe as shown in the figure. What is the magnitude of the deflection h of the differential mercury manometer corresponding to a discharge of 126 L/s?
The friction in the pipe can be completely neglected.

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Question 156

If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge

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Question 157

A 20 cm diameter pipe 5000 metres long conveys 0.05 cumec of water which is to be pumped through a height of 6 metres. What is the horse power required by the pump, if its efficiency is 75 % ?(take 4f = 0.006)

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Question 158

For laminar flow in a pipe, V is equal to

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Question 159

Water at $$20^\circ C$$ flowing through a 20 cm diameter pipe. Take kinematic viscosity of water at $$20^\circ C$$ is equal to 0.0101 stoke. Assume that the changes from laminar to turbulent at $$R_e = 2320$$. The critical velocity will be _____.

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Question 160

Surge wave is an example of _____.

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