# The ratio of limiting friction and normal reaction is known as

1.  coefficient of friction

2.  angle of friction

3.  angle of repose

4.  sliding friction

4

coefficient of friction

Explanation :
No Explanation available for this question

# Which one of the following statements is not correct

1.  the tangent of the angle of friction is equal to coefficient of friction

2.  the angle of repose is equal to angle of friction

3.  the tangent of the angle of repose is equal to coefficient of friction

4.  the sine of the angle of repose is equal to coefficient to friction

4

the sine of the angle of repose is equal to coefficient to friction

Explanation :
No Explanation available for this question

# On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be

1.  towards the wall at its upper end

2.  away from the wall at its upper end

3.  upwards at its upper end

4.  downwards at its upper end

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upwards at its upper end

Explanation :
No Explanation available for this question

# On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be

1.  downwards at its upper end

2.  upwards at its upper end

3.  perpendicular to the wall at its upper end

4.  zero at its upper end

4

zero at its upper end

Explanation :
No Explanation available for this question

# Which of the following is dimension less

1.  specific weight

2.  specific volume

3.  specific speed

4.  specific gravity

4

specific gravity

Explanation :
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# Frictional force encountered after commencement of motion is called

1.  post friction

2.  limiting friction

3.  kinematic friction

4.  dynamic friction

4

dynamic friction

Explanation :
No Explanation available for this question

# Coefficient of friction is the

1.  angle between normal reaction and the resultant of normal reaction and the limiting friction

2.  ratio of limiting friction and normal reaction

3.  the friction force acting when the body is just about to move

4.  the friction force acting when the body is in motion

4

ratio of limiting friction and normal reaction

Explanation :
No Explanation available for this question

# Pick up wrong statement about friction force for dry surfaces. Friction force is

1.  proportional to normal load between the surfaces

2.  dependent on the materials of contact surface

3.  proportional to velocity of sliding

4.  independent of the area of contact surfaces

4

proportional to velocity of sliding

Explanation :
No Explanation available for this question

# The normal stress in a fluid will be constant in all directions at a point only if

1.  it is incompressible

2.  it has uniform viscosity

3.  it has zero viscosity

4.  it is at rest

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it is at rest

Explanation :
No Explanation available for this question

# The pressure at a point in a fluid will not be same in all the directions when the fluid is

1.  moving

2.  viscous

3.  viscous and static

4.  viscous and moving

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