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SSC-JE - ME : Technical Quiz-11

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Question 1

Of the radiant energy 350W/m2 incident upon a surface 250W/m2 is absorbed, 60W/m2 is reflected and the remainder is transmitted through the surface. Workout the value for reflectivity for the surface material

Question 2

Coefficient of friction in rolling operation is given as µ. What is its relation with the draft?

Question 3

The instantaneous center of rotation of a rigid thin disc rolling on a plane rigid surface is located at

Question 4

A grinding wheel of 150 mm diameter is rotating at 3000 rpm. The grinding speed is _____.

Question 5

A Carnot engine operates between 27oC and 327oC. If the engine produces 300 kJ of work, what is the entropy change during heat addition?

Question 6

What is the relationship between elastic constants E, G and K?

Question 7

Which mechanism produces intermittent rotary motion from continuous rotary motion?

Question 8

The natural vibration equation is + 3x = 0. Find wn

Question 9

Which of the following is true about Lozenge joint?

Question 10

Laminar developed flow at an average velocity of 5 m/s occurs in a pipe of 10 cm radius. The velocity at 5 cm radius is
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