Engineering Mechanics Mock Test 7

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Question 1 of 10

1. There are mainly two types of forces which are being stated in the free body diagram of the belts, they are generally the resultant forces which are being acted over the body over which the belt is rolling. Which are they?

Normal and Vertical

Normal and Fractional

Normal and Frictional

Vertical and Frictional

Question 1 of 10

Question 2 of 10

2. Sometime the principle of transmissibility is somehow applied to journal bearings. It states that:

It states that the force acting on the body is a unit vector

It states that the force acting on the body is a sliding vector

It states that the force acting on the body is a rolling vector

It states that the force acting on the body is a wedging vector

Question 2 of 10

Question 3 of 10

3. Which of the following statement for the three force system applied in the screws is true?

The forces are always in equilibrium

The moment need not to be seen for the equilibrium, they are always in equilibrium

The forces are not always in the equilibrium

The moments are always in equilibrium

Question 3 of 10

Question 4 of 10

4. For making the equilibrium equations for the belt the normal forces that are being acted over them are in which direction in the free body diagrams?

Horizontally Right

Horizontally Left

Vertically Upward

Vertically Downward

Question 4 of 10

Question 5 of 10

5. A body’s all small particles have a small weight which is being applied by them to the body, which adds up to the total weight of the body.

True

False

Question 5 of 10

Question 6 of 10

6. Which statement is correct about the vector F acting parallel to the direction of the motion of the rolling body?

F= Fcos β + Fsin α + Fcosγ

F= Fsin β + Fcos α + Fcosγ

F= Fcos β + Fcos α + Fcosγ

F= Fcos β + Fcos α + Fsinγ

Question 6 of 10

Question 7 of 10

7. Determine the normal force at B in the wedge shown. Take the value of the coefficient of friction to be 0.3. Assume that the block doesn’t slip at C.

2452 N

415 KN

3150 N

215 KN

Question 7 of 10

Question 8 of 10

8. In the equation Wa/r generally used in the rolling frictional calculations, what does each stands for?

P is the force, W is weight of the body, r radius cm and a coefficient of rolling friction

P is the force in nano Newton, W is weight of the body, r radius and a coefficient of rolling friction

P is the force, W is weight of the body, r radius and a coefficient of rolling friction all in normal powers

P is the force, W is weight of the body in kg, r radius and a coefficient of rolling friction

Question 8 of 10

Question 9 of 10

9. Which one is not the condition for the equilibrium in free body diagram for the belts as considered for calculation of the normal forces, consider all forces to be straight and linear?

∑Fy=0

∑Fx=0

∑F≠0

∑Fz=0

Question 9 of 10

Question 10 of 10

10. The phenomena of horizontal pull and push explain something related to the friction, among the following what is it?

Theory of action

Theory of friction

Theory of forces

Theory of relativity

Question 10 of 10