Ratio of movement of inertia of a circle and that of a square having same area about their centroidal axis is

1.  3/π

2.  3/2π

3.  4/π

4.  5/4π

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4
Correct Answer :

3/π


Explanation :
No Explanation available for this question

Wet clothes are hung on a clothesline outdoors in sub-zero weather. After a day the clothes are brought in to the house and observed to be dry. The process of drying is best explained as

1.  Vaporization

2.  Sublimation

3.  Melting

4.  Condensation

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4
Correct Answer :

Sublimation


Explanation :
No Explanation available for this question

Length to radius ratio 1/r of a solid cylinder such that the moments of inertia about the longitudinal and transverse axes are equal is

1.  1

2.  √3

3.  √5

4.  2

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4
Correct Answer :

√3


Explanation :
No Explanation available for this question

Ratio of movement of inertia of a circular body about its x-axis to that about y-axis is

1.  0.5

2.  1.0

3.  1.5

4.  2.0

View Answer  
4
Correct Answer :

1.0


Explanation :
No Explanation available for this question

Two identical circular discs are released from rest at the top of an inclined plane. One of them rolls down without slipping, while the other slides down on its flat face. If friction is absent, which one would reach the bottom first

1.  The disc that slides

2.  The disc that rolls

3.  Both will reach at the same time

4.  Unpredictable

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4
Correct Answer :

The disc that rolls


Explanation :
No Explanation available for this question

A car is moving along a straight horizontal road with speed v0 , if the coefficient of friction between the tyres and road is µ, the shortest distance in which the car can stop is

1.  vo2/(2µg)

2.  v0/(µg)

3.  (v0/(µg))2

4.  (v0/(µg))1/2

View Answer  
4
Correct Answer :

vo2/(2µg)


Explanation :
No Explanation available for this question

A block resting on an inclined plane beings to slide down the plane when angle of increased at 30 degree. Then the coefficient of friction between block and the plane is

1.  0.38

2.  0.578

3.  0.72

4.  0.866

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4
Correct Answer :

0.578


Explanation :
No Explanation available for this question

A body of weight 120 N rests on a rough horizontal surface (µ = 0.3) and is acted upon by a force applied at an angle of 30 degree to the horizontal. The force required to just cause the body to slide over the surface is about

1.  22.5 N

2.  27N

3.  35.0N

4.  40N

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4
Correct Answer :

35.0N


Explanation :
No Explanation available for this question

An effort P1 is just sufficient to drag a load W up an inclined plane having inclination θ with the horizontal direction. Subsequently the effort P1 is reduced to P2 and the load W is just able to move downwards along the plane. Then load W will be equal to

1.  ((P1+P2)/2)sinθ

2.  ((P1+P2)/2)cosecθ

3.  (P1+P2)/tanθ

4.  (P1+P2)/2cosecθ

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4
Correct Answer :

((P1+P2)/2)cosecθ


Explanation :
No Explanation available for this question

A machine requires an effort of 10 kg to lift a load of 250 kg and an effort of 13 kg for a load of 400 kg. The effort requires to lift a load of 500 kg will be

1.  15 kg

2.  25 kg

3.  35 kg

4.  45 kg

View Answer  
4
Correct Answer :

15 kg


Explanation :
No Explanation available for this question
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