Engineering Mechanics Mock Test 2

10%

Question 1 of 10

1. In the equation A.(rxF), the r vector is what?

The length of the force vector

The length of the radius

The magnitude of the axis, i.e. the length of the axis

The radius vector

Question 1 of 10

Question 2 of 10

2. If two forces magnitude F each are acting in the Cartesian coordinate and are acting at the points A(3,3) and B(-3,3). They are heading towards negative z direction and positive z direction respectively. The distance between them is given as r. The radius vectors of the force at A and B are Ra and Rb respectively. Then the moment is given as:

(Ra-Rb).F

(Rb-Ra).F

(Rb-Ra)xF

(Ra-Rb)xF

Question 2 of 10

Question 3 of 10

3. The simplification of the couple is done on the basis of the ______________

The couple is a scalar and can’t be simplified

The couple is a vector and thus can’t be simplified

The clockwise of the anti-clockwise rotation sign convention

The simplification is not possible

Question 3 of 10

Question 4 of 10

4. The force and the couple can’t be simplified together as one is the cause and the other is the effect.

The statement is wrong and the reason given is also wrong

The statement is correct and the reason given is also correct

The statement is wrong but the reason given is also correct

The statement is correct but the reason given is also wrong

Question 4 of 10

Question 5 of 10

5. The moment is the cross product of which two vectors?

Radius and Force vectors

Radius and Force scalars

Force and Radius vectors

Force and Radius scalars

Question 5 of 10

Question 6 of 10

6. If you are opening the door, then the force you apply is greater if you open it from the part closer to the hinges.

False

True

Question 6 of 10

Question 7 of 10

7. The couple is a scalar quantity and the force is vector quantity and hence only force can be simplified as __________

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

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

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

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

Question 7 of 10

Question 8 of 10

8. Determine the moment of the force F along the segment QP of the pipe assembly shown in the figure.

500Nm

510Nm

100Nm

110Nm

Question 8 of 10

Question 9 of 10

9. Couple is having a combination of two forces. They are different in magnitude.

True

False

Question 9 of 10

Question 10 of 10

10. Which of the following is true?

Total moment of various forces acting on the body is always zero

Total moment of various forces acting on the body is the vector sum of all moments which is perpendicular to each other forces

Total moment of various forces acting on the body is the algebraic sum of all moments

Total moment of various forces acting on the body is the vector sum of all moments

Question 10 of 10