SSC JE Mechanical Engineering 25th May 2014 Shift-2

Instructions

For the following questions answer them individually

Question 131

Generally used fuel gas in gas welding is

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Question 132

Spot welding, projection welding and seam welding belongto the category of

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Question 133

Which one of the following is an example of solid state welding ?

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Question 134

The shape andsize of sand grains affects the following property :

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Question 135

The velocity distribution for flow over a flat plate is given by $$u = (y - y^2)$$ in whichu is velocity in metres per second at a distance y metres above the plate. What is the shear stress value at y = 0.15 m ? The dynamic viscosity of fluid is 8.0 poise.

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Question 136

Froude’s Number relates to

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Question 137

In pitot-tube the velocity of flow at a point is reduced to zero. That pointis called as

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Question 138

The velocity distribution in a pipe flow is parabolic if the flow is

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Question 139

Mercury does not wet the glass surface. This property of mercury is due to

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Question 140

Loss of head due to friction in a uniform diameter pipe with viscousflow is

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