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SSC JE 2019 -20 Technical Quiz 29

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Question 1

Which of the following statement is false?

Question 2

Moment of Inertia of a right circular thin cylinder of radius r and mass M about its axis is given by

Question 3

Laser beam welding is used for

Question 4

The Helmholtz function F is given by __________.

Question 5

A beaker is filled with a liquid up to the mark of one litre and weighed. The weight of the liquid is found to be 6.5 N. The specific volume of the liquid will be

Question 6

δ-Ferrite has which micro-structure

Question 7

Select the wrong statement(s):

1) Prandtl number is a property of fluid

2) Reynold’s number plays a significant role in free convection

3) Grashoff number is used in forced convection

4) Peclet number is the product of Reynold number and Prandtl number

Question 8

For a spring mass damper system with spring mass 3 kg, stiffness 1000 N/m, and an attached mass of 9 kg the natural frequency of the system is (in rad/sec)

Question 9

Choose the correct chemical formula of R-22 refrigerant.

Question 10

The plane of maximum shear stress has normal stress that is
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