Engineering Mechanics Mock Test 10

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Question 1 of 10

1. One of the use of the centre of mass or centroid is as in the radius of gyration is that the net force acts at the ___________ of the loading body.

Centroid

The base

The centre axis

The corner

Question 1 of 10

Question 2 of 10

2. Calculate the Normal force developed between the body and the surface due to the work done by the force.

116N

180N

100N

611N

Question 2 of 10

Question 3 of 10

3. If the resolved force for the stability of equilibrium configuration or the force which you get as the answer after solving the question is negative, then what does this implies?

The force component is not possible

The force is in the reverse direction w.r.t the direction set in the free body diagram

The force is not in the reverse direction w.r.t the direction set in the free body diagram

The force is possible, but in the direction perpendicular to the resultant force

Question 3 of 10

Question 4 of 10

4. What is not the criteria for the equilibrium in potential energy free body diagram?

∑Fy=0

∑Fx=0

∑Fz=0

∑F≠0

Question 4 of 10

Question 5 of 10

5. Determine the magnitude of the force F = 300j parallel to the direction of AB?

200N

155N

257.1N

175N

Question 5 of 10

Question 6 of 10

6. Which statement is right for conservative force vector F = Ai + Bj + Ck?

In rectangular components representation of any vector we have vector F = Ax + By + Cz

In rectangular components representation of any vector we have vector F = Ai + Bj + Ck

In rectangular components representation of any vector we have vector F = Fx + Fy + Fz

In rectangular components representation of any vector we have vector F = Fi + Fj + Fk

Question 6 of 10

Question 7 of 10

7. Virtual work done by the couple is best given by_____________

δU = M.δθ

δU = Mδθ

δU = Mxδθ

δU = Mθ

Question 7 of 10

Question 8 of 10

8. The net moment of the body is zero that means the distance between the force and the rotational axis is zero thus the stability of equilibrium configuration.

The first part of the statement is false and other part is false too

The first part of the statement is true and other part is true too

The first part of the statement is false and other part is true

The first part of the statement is true and other part is false

Question 8 of 10

Question 9 of 10

9. Radius of gyration is indirectly to the parallel axis theorem. The parallel axis theorem gives the moment of inertia ______________ to the surface of considesrance.

Linear

Perpendicular

Non-Linear

Parallel

Question 9 of 10

Question 10 of 10

10. ∑Fx=0, ∑Fy=0 and ∑Fz=0 are vector equations for the three dimensions. They are satisfied when the body is achieved it state of equilibrium and the body has potential energy stabilised.

False

True

Question 10 of 10