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ISRO Mechanical Exam 2017: Weekly Toppers Quiz 5

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Question 1

Which of the following property of air does not increase with rise in temperature?

Question 2

In simple harmonic motion the acceleration is proportional to

Question 3

For solid shaft subjected to a torque of 18000 Nm having a permissible shear stress of 60 N/mm², the diameter of shaft is

Question 4

The Vernier reading should not be taken at its face value before an actual check has been taken for

Question 5

For two springs having same stiffness (k) are in series, the equivalent stiffness would be __________.

Question 6

Sun’s surface at 5800 K emits radiation at a wavelength of 0.5 µA . A furnace at 300

will emit through a small opening, radiation at a wavelength of

Question 7

A liquid compressed in cylinder has a volume of 0.04 m³ at 50 kg/cm² and a volume of 0.039 m³ at 150 kg/cm². The bulk modulus of elasticity of liquid is

Question 8

A stone is projected horizontally from a cliff at 10 m/sec and lands on the ground below at 20 m from the base of the cliff. Find the height of the cliff. Use g=10 m/sec²

Question 9

The image of the point (1,2,3) in the plane 2x+y+z=13 is

Question 10

Which is false statement about annealing?

Annealing is done to

Question 11

Misrun is a casting defect which occurs due to

Question 12

Only rocket engines can be propelled to space because ________.

Question 13

Two pipe lines of equal length are connected in series. The diameter of second pipe is two times that of first pipe, the ratio of head loss between first and second pipe :

Question 14

A hollow MS pipe is kept on a smooth straight edge with the pipe mid-point sitting on it. A load ‘W’ newtons is applied at the end which is keeping the pipe balanced in the horizontal condition, what is the safe maximum load ‘W’ that can be applied without yielding the tube. Consider the self weight of the tube as ‘p’ N/m.
Diameter of the pipe is ‘d’ Youngs modulus of pipe is E, Allowable yield stress is

Question 15

The angle between two unit-magnitude coplanar vectors P(0.86, 0.500,0) and Q(0.259, 0.956, 0) will be

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Aug 21ESE & GATE ME