If two members of the structure (trusses) forms a truss joint and there is an external force acting on that joint then the two members are called as zero force members.

If two members of the structure (trusses) form a truss joint and there is no external force acting on that joint then the two members are called___________

A

Scalar form of the force vector

B

The equivalent vector of truss

C

Zero moment member

D

Zero force member

The elastic potential energy of a body is
1. Work done by the external force against the deforming force.
2. Work done against the external force by the deforming force.
3. The sum of work done by the external force and the deforming force.
Which one option is true?

A

Only 1

B

1 and 3

C

1, 2 and 3

D

None of these

The trusses spacing for 6m prestressed bow string truss with cable reinforcement span for 18m material requirement per truss?

A

338-433

B

311-234

C

829-456

D

675-919

Which of the following conditions are true to make the calculations easy? First condition: We use the method of a joint to find the forces acting over the joints in the space trusses. Second condition: In this, we start from the joint having at least one known force and at the most two unknown forces.

A

We only see the first condition and neglect the second condition

B

We neglect the first condition and only see the second condition

C

We neglect both the conditions because calculations are possible without following the first and second conditions

D

First and second conditions are compulsory and can’t be neglected

We use the method of a joint to find the forces acting over the joints in the space trusses. In this we start from the joint having at least one known force and at the most two unknown forces.

A

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

B

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

C

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

D

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

In three members having one as zero force member in truss, what if there is an external force applied?

A

The zero force member will be unaltered

B

The zero member needs to be changed or rotated

C

There will be no zero member

D

There will be two zero members formed

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?

A

Gusset Plate

B

Ignified plate

C

Non-metallic plate

D

Gymnite plate

The external stability of the space truss requires that the support reactions keep the truss in force equilibrium about all the axes. State whether the above statement is true or false.

A

true

B

false

If all segment of a truss forms a triangle, then that truss is:-

A

internally stable

B

externally stable

C

internally unstable

D

externally unstable

Consider a system on which there are external forces acting. If the vector sum of all these external forces is zero, then the centre of mass _____

A

must not move

B

may move

C

may accelerate

D

must accelerate

If two members of the structure (trusses) forms a truss joint and there is an external force acting on that joint then the two members are called as zero force members.

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