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ESE ME 2021 : Technical Quiz-11

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Question 1

The area of a Mohr’s circle is 154square cm. If the circle is centered at (6,0) and the scaling parameter used is 1cm = 10MPa, then calculate the major principal stress.

Question 2

A system of masses rotating in different parallel planes in dynamic balance if –

Question 3

A batsman knocks back a ball straight in the direction towards the bowler without altering its initial speed of 12 m/s.If the mass of the ball is 0.15 kg, the magnitude of impulse (in Ns)imparted to the ball is ___.

Question 4

The stresses encountered in metal forming processes, are ________.

Question 5

A vibrating system with mass 4kg and stiffness 36N/m and a damper has a damping coefficient of 12 Ns/m. Calculate the time period of oscillation (s) when an exciting force of 27sin3t is applied. (Take 0.866² = 0.75).

Question 6

Change in entropy of universe during reversible cyclic processes is

Question 7

The moisture in a refrigerant is removed by

Question 8

The Ericsson cycle consists of _______.

Question 9

“The velocity of entrance and exit through a nozzle remains the same.” Is this ever possible?

Question 10

A pump delivers water at a rate of 0.25 m³/s against a head of 20 m .If the overall efficiency of the pump is 50%, the power required by the pump is _________.

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Aug 31ESE & GATE ME