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Mechanical Engineering - Theory of machines

Exercise : Theory of machines - Section 4
21.
The controlling force diagram for a spring controlled governor is a curve passing through the origin.
Yes
No
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
The lower pairs are __________ pairs.
self-closed
force-closed
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
The arrangement is called bevel gearing, when two __________ are connected by gears.
intersecting and coplaner shafts
non-intersecting and non-coplaner shafts
parallel and coplaner shafts
parallel and non-coplaner shafts
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the
unbalanced couples are caused only at higher speeds
unbalanced forces are not dangerous at higher speeds
effects of unbalances are proportional to the square of the speed
effects of unbalances are directly proportional to the speed
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
The maximum fluctuation of speed is the
difference of minimum fluctuation of speed and the mean speed
difference of the maximum and minimum speeds
sum of maximum and minimum speeds
variations of speed above and below the mean resisting torque line
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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