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Mechanical Engineering - Theory of machines

Exercise : Theory of machines - Section 1
21.
When the two elements of a pair have a surface contact when relative motion takes place and the surface of one element slides over the surface of the other, the pair formed is known as a
lower pair
higher pair
self-closed pair
force-closed pair
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
The centre distance between two meshing involute gears is equal to
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
The two elements of a pair are said to form a __________ when they permit relative motion between them.
open pair
kinematic pair
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
When the axes of the shafts, over which the gears are mounted, move relative to a fixed axis, then the train is known as reverted gear train.
Right
Wrong
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
In under damped vibrating system, the amplitude of vibration
decreases linearly with time
increases linearly with time
decreases exponentially with time
increases exponentially with time
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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