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Mechanical J.E Quiz-22

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Question 1

An Otto cycle with compression ratio of 6 have 800kJ/kg of heat energy supplied in constant volume heat addition process. What is work done(kJ) by burning per kg of fuel?

Question 2

For SHM motion of cam & follower, the maximum velocity of the follower is, where , h= rise of follower, = angle turned by crank, ф= crank rotation for maximum follower displacement.

Question 3

In a tensile test a bar is subjected to a uniform tensile force. The point in the stress strain curve at which the cross section of the specimen starts decreasing is

Question 4

In MCU (Machine Control Unit) of codes written for a CNC machines. What does the letter H stands for?

Question 5

A shell and tube heat exchanger is used for cooling purpose in a chemical industry for a processing plant. The heat exchanger transfer enthalpy between two fluids, if no phase change occurs in any of the fluids the heat exchanger is referred as,

Question 6

A plate is placed longitudinally in a stream of crude oil having specific gravity of 0.8 which flows with a velocity of 8m/sec and has Reynolds Number of 18750. Find the magnitude of shear stress on the plate.

Question 7

The product of power and time is known as
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