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Mechanical Engineering - Theory of machines

Exercise : Theory of machines - Section 5
16.
In a mechanism, the fixed instantaneous centres are those centres which
remain in the same place for all configurations of the mechanism
vary with the configuration of the mechanism
moves as the mechanism moves, but joints are of permanent nature
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
Which of the following statements regarding laws governing the friction between dry surfaces are correct?
The friction force is dependent on the materials of the contact surfaces.
The friction force is directly proportional to the normal force.
The friction force is independent of me area of contact.
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
The frictional torque transmitted in a conical pivot bearing, considering uniform wear, is
μ W R cosec α
μ W R cosec α
μ W R cosec α
μ W R cosec α
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
A combination of kinematic pairs, joined in such a way that the relative motion between the links is completely constrained, is called a
structure
mechanism
kinematic chain
inversion
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
A link or element need not to be a rigid body, but it must be a resistant body.
Agree
Disagree
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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