The co-efficient of friction depends upon________________?

Related Mcqs:

Which of the following is not the unit of work, energy and heat ?

A. kcal B. kg m C. kWhr D. hp E. hp hr...

Center of gravity of a thin hollow cone lies on the axis at a height of________________?

A. one-fourth of the total height above base B. one-third of the total height above base C. one-half of the total height above base D. three-eighth of the total height above the base E. none of the above...

In the lever of third order, load W, effort P and fulcrum F are oriented as follows_________________?

A. W between P and F B. F between W and P C. P between W and F D. W, P and F all on one side E. none of the above...

The effort required to lift a load W on a screw jack with helix angle a and angle of friction <j) is equal to_________________?

A. Wtan(a + ) B. Wtan(a-) C. Wcos(a + ) D. Wsin(a + ) E. W (sin a + cos )...

According to law of triangle of forces______________?

A. three forces acting at a point will be in equilibrium B. three forces acting at a point can be represented by a triangle, each side being proportional to force C. if three forces acting upon a patticle are represented in magnitude and direction by the sides of a triangle, taken in order, they will … According to law of triangle of forces______________?Read More...