Engineering Mechanics Practice Test 4

1. Find the force in the member UR.

800N

400N

500N

300N

2. 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?

Gymnite plate

Non-metallic plate

Gusset Plate

Ignified plate

3. Which of the following is correct for space trusses?

The direction of the unknown force is known to us already

The direction of the unknown can’t be determined

The direction of the unknown is of no use, it is not founded

To know the direction of the unknown force we take assumption of it

4. __________ is a structure made of slender members which are joined together at their end points.

Beam

Support

Pillar

Truss

5. The magnitude of the resultant of the two vectors is always:

Depends on the angle between them

Greater than one of the vector’s magnitude

Axis we choose to calculate the magnitude

Smaller than one of the vector’s magnitude

6. What will happen if the collinearity of the two members is affected?

The zero member needs to be changed or rotated

The zero force member will be unaltered

There will be two zero members formed

There will be no zero member

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

First to the joints then the trusses through purlins

First to the truss then the joints through purlins

First to the truss then the purlins through joints

First to the purlins then the joints through trusses

8. Find the force in the member RQ.

200N

750N

450N

250N

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

False

True

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

The assumptions are not to be taken

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