Mechanical Engineering MCQs

2075 MCQs  (Page 46 of 208)

Attempt Mechanical Engineering Mcqs Quiz
A body moves, from rest with a constant acceleration of 5 m per sec. The distance covered in 5 sec is most nearly_________________?
A. 38 m
B. 62.5 m
C. 96 m
D. 124 m
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A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to___________________?
A. 25
B. 50
C. 100
D. 250
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If n = number of members andy = number of joints, then for a perfect frame, n =_________________?
A. J-2
B. 2j-l
C. 2/-3
D. 3/-2
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The co-efficient of friction depends upon_______________?
A. Nature of surfaces
B. Area of contact
C. Shape of the surfaces
D. Ail of the above.
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A single force and a couple acting in the same plane upon a rigid body_____________________?
A. Balance each other
B. Cannot balance each other
C. Produce moment of a couple
D. Are equivalent
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The maximum frictional force which comes into play when a body just begins to slide over another surface is called__________________?
A. Limiting friction
B. Sliding friction
C. Rolling friction
D. Kinematic friction
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The effort required to lift a load W on a screw jack with helix angle a and angle of friction <j) is equal to _________________?
A. Wtan(a + )
B. Wtan(a-)
C. Wcos(a + )
D. Wsin(a + )
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Coulomb friction is the friction between _________________?
A. Bodies having relative motion
B. Two dry surfaces
C. Two lubricated surfaces
D. Solids and liquids
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A projectile is fired at an angle 9 to the vertical. Its horizontal range will be maximum when 9 is_______________?
A. 0°
B. 30°
C. 45°
D. 60°
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A particle moves along a straight line such that distance (x) traversed in t seconds is given by x = t2 (t – 4), the acceleration of the particle will be given by the equation __________________?
A. 3t2-lt
B. 3t2+2t
C. 6f-8
D. 6f-4
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Word of the Day
28 Sep
Expatriate
a person who lives outside their native country.
ملک بدری، جلا وطن کرن، شہر بدر کرنا

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