Engineering Mechanics Practice Test 4

1. What is after taking the assumption of the direction of the force, the direction comes opposite?

The direction will be already given to us, no need of assuming

The direction is in the opposite sense, and hence the direction is known to us

The assumptions are not to be taken

The assumption made was wrong and the question can’t be solved further

2. Find the vertical reaction at Q.

12KN

6KN

4KN

0KN

3. The zero forces are used to improve__________ of the structure.

Ductility

Toughness

Malleability

Stability

4. The rules which are used to design the trusses are having various rules. Of them one is that the smooth pins are not used to join the members.

Statement is incorrect as the rolling pins are used

Statement is incorrect because there are no rules

Statement is incorrect

Statement is correct

5. Find the force in the member UR.

400N

300N

800N

500N

6. Which of following is not considered as the true condition for the three members to be zero force members?

Any two of the three members must be perpendicular

They should be joined by a joint

There must be no external forces acting

Any two of the three members must be collinear

7. Frames and machines are two types of structural figures which are often composed of pin connected ___________ member.

Multi-moment

Multi-force

Multi-couple

Multi-valued

8. In a roof supporting truss the load is transmitted when ________

First to the joints then the trusses through purlins

First to the purlins then the joints through trusses

First to the truss then the purlins through joints

First to the truss then the joints through purlins

9. The joint in the trusses are generally formed by welding the materials at the ends of the trusses on a common plate. Which gives strength to the design. What is that plate called?

Non-metallic plate

Gusset Plate

Gymnite plate

Ignified plate

10. The method of section cuts the whole structure of trusses into section and then uses the cut out portion for the calculations.

True

False