MD Day 9

Question 1

85. When the line of action of the load bisects the arc of partial bearing, it is said to be:
    A. Eccentrically loaded
    B. Fit loaded
    C. Centrally loaded
    D. Surface loaded

Answer 1

The answer is: C

Question 2

86. Which one of the following is not the law of dry friction?
    A. If friction is not neglected, the reactions are always normal to the surfaces on contact
    B. Friction always acts to oppose the relative motion of the free body
    C. If static friction is acting, the value of the friction force may vary from zero to its maximum value
    D. The force of friction is always normal to the surface

Answer 2

The answer is: D. The force of friction is always normal to the surface

Question 3

87. The angle of friction is:
    A. The angle which frictional force makes with the normal
    B. The angle at which the force applied from external source will cause movement
    C. The angle at which frictional force is inclined to external force
    D. The angle between the normal reaction and the resultant of normal reaction and the limiting friction

Answer 3

The answer is: D The angle between the normal reaction and the resultant of normal reaction and the limiting friction

Question 4

88. Kinetic friction is:
    A. Maximum value of frictional force when a body is about to move
    B. Friction between two well lubricated bodies
    C. Friction force acting when the body is in motion D.Friction force which keeps a body in motion

Answer 4

The answer is: C. Friction force acting when the body is in motion

Question 5

89. The coefficient of friction is:
    A. The angle between the normal reaction and the resultant of normal reaction and the limiting friction
    B. The tangent of the angle between the normal reaction and the resultant of the normal reaction and the limiting friction
    C. The tangent of the angle of the net resultant force with the direction of motion
    D. The tangent of the angle between the normal reaction of limiting friction

Answer 5

The answer is: D The tangent of the angle between the normal reaction of limiting friction

Question 6

90. The limiting force of friction is:
    A. The value of friction force which stops the movement of the body
    B. The value of friction force which cannot exceed under a situation
    C. The friction force acting when the body is just about to move
    D. The friction force acting on a body when it is in motion

Answer 6

The answer is: C The friction force acting when the body is just about to move

Question 7

91. If the angle of friction is zero, a body will experience:
    A. Infinite friction
    B. Zero friction