# Tangent of angle of friction is equal to

1.  kinetic friction

2.  limiting friction

3.  angle of repose

4.  coefficient of friction

4

coefficient of friction

Explanation :
No Explanation available for this question

# Kinetic friction is the

1.  tangent of 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

the friction force acting when the body is in motion

Explanation :
No Explanation available for this question

# Viscosity of water in comparison to mercury is

1.  higher

2.  lower

3.  same

4.  higher/lower depending on temperature

4

higher

Explanation :
No Explanation available for this question

# The bulk modulus of elasticity with increase in pressure

1.  increases

2.  decreases

3.  remains constant

4.  unpredictable

4

increases

Explanation :
No Explanation available for this question

# A semi-circular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi-circular disc and horizontal surface is i. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will

1.  remain horizontal

2.  slant up towards direction of pull

3.  slant down towards direction of pull

4.  unpredictable

4

slant down towards direction of pull

Explanation :
No Explanation available for this question

# The bulk modulus of elasticity

1.  has the dimensions of pressure

2.  increases with pressure

3.  is large when fluid is more compressible

4.  is independent of pressure and viscosity

4

increases with pressure

Explanation :
No Explanation available for this question

# The algebraic sum of moments of the forces forming couple about any point in their plane is

1.  equal to the moment of the couple

2.  constant

3.  both of above are correct

4.  both of above are wrong

4

equal to the moment of the couple

Explanation :
No Explanation available for this question

# A single force and a couple acting in the same plane upon a rigid body

1.  balance each other

2.  cannot balance each other

3.  produce moment of a couple

4.  are equivalent

4

cannot balance each other

Explanation :
No Explanation available for this question

# If three forces acting in one plane upon a rigid body, keep it in equilibrium, then they must either

1.  meet in a point

2.  be all parallel

3.  at least two of them must meet

4.  all the above are correct

4

all the above are correct

Explanation :
No Explanation available for this question

# The maximum frictional force which comes into play when a body just begins to slide over another surface is called

1.  limiting friction

2.  sliding friction

3.  rolling friction

4.  kinematic friction

4