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Theory of Machine

Theory of Machine
The type of gears used to connect two non parallel and non intersecting shafts is

Spiral gear
Helical gear
Spur gear
Bevel gear

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Theory of Machine
The type of coupling used to join two shafts whose axes are neither in same straight line nor parallel, but intersect is

Universal coupling
Flexible coupling
Oldham's coupling
Chain coupling

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Theory of Machine
A higher pair has__________.

None of these
No contact
Surface contact
Point contact

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Theory of Machine
In steady state forced vibrations, the amplitude of vibrations at resonance is __________ damping coefficient.

Directly proportional to
Independent of
Inversely proportional to
Equal to

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Theory of Machine
In a vibrating system, if the actual damping coefficient is 40 N/m/s and critical damping coefficient is 420 N/m/s, then logarithmic decrement is equal to

0.6
0.8
0.2
0.4

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Theory of Machine
The Kutzbach criterion for determining the number of degrees of freedom (n) is (where l = number of links, j = number of joints and h = number of higher pairs)

n = 2(l - 1) - 2j - h
n = 3(l - 1) - 2j - h
n = 2(l - 1) - 3j - h
n = 3(l - 1) - 3j - h

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