A body of weight 100 N is placed on a rough horizontal plane. What will be the co-efficient of friction between surfaces if a horizontal force of 60 N just causes the body to slide over the horizontal plane?

Two forces of equal magnitude ‘P’ act at an angle 120° to each other. What will be their resultant?

Young’s modulus of elasticity for a perfectly rigid body is

Which of the following concurrent forces cannot have a resultant of 4N?
 

Factor of safety is the ratio of

The height of Watt’s governor is proportional to (Where N: rpm of balls) 

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Crowning on pulleys helps

For a governor running at constant speed, the force acting on the sleeve is

For maximum power to be transmitted by the belt, the maximum permissible tension in the belt is

The factor that decides the size of the cam is

Sensitiveness of Governor: Definition and Importance in Mechanical Systems

Cam converts the rotary motion into

A___ system is exemplified by a jet engine

Match the following types of fluid to their description given 

Column I        Column II

 1. Ideal            (A) Shear stress is directly proportional velocity gradient

 2. Real            (B) Shear stress is not directly proportional velocity gradient

If X is the stress on a spherical thin-walled pressure vessel and Y is the hoop stress on a cylindrical thin-walled pressure vessel, how are X and Y related?

For a stretched metal wire, which of the following is correct? 

(a) Stress is force applied on the body per unit area 

(b) Stress and Pressure are same 

(c) Stress is internal whereas pressure is external even though they share same units

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The creep in a belt drive is due to

Backlash in gears is