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Mechanical Engineering - Theory of machines

Exercise : Theory of machines - Section 8
46.
The brake commonly used in railway trains is
shoe brake
band brake
band and block brake
internal expanding brake
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
The face of the tooth is the
surface of the top of tooth
surface of tooth above the pitch surface
width of tooth below the pitch surface
width of tooth measured along the pitch circle
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
A Hartnell governor has its controlling force (Fc) given by Fc = ar + b, where r is the radius of rotation and a and b are constants. The governor becomes isochronous when
a is + ve and b = 0
a = 0 and b is + ve
a is + ve and b is - ve
a is + ve and b is also + ve
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
The acceleration of the particle moving with simple harmonic motion is __________ at the mean position.
zero
minimum
maximum
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
In a differential band brake as shown in the below figure, if the length OB is greater than OA, then the force P at C should act in the downward direction.
Yes
No
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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