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NLC Technical Quiz 8

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Question 1

When can a Piezometer not be used for pressure measurement in pipes ?

Question 2

Surface imperfections which separate two orientations that are mirror images of one another is called _______.

Question 3

Anti-friction bearings are ______.

Question 4

The maximum and minimum speed of a governor is 30 rad/s and 10 rad/s. Its sensitivity is ________.

Question 5

A two-cylinder two-stroke have bore and stroke 300 mm and 500 mm respectively, Find the mean piston speed in meter per second at 300 rpm ______.

Question 6

The efficiency of superheat Rankine cycle is higher than that of simple Rankine cycle because _______.

Question 7

During solidification of a pure molten metal, the grains in the casting near the mould wall are _______.

Question 8

A smaller sphere (1) of radius 50 mm is inside a larger sphere (2) of radius 100 mm. What will be the value of the radiation shape factor F₂₂:

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