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Theory of Machine

Theory of Machine
If the number of links in a mechanism is equal to l, then the numbers of possible inversions are equal to

l
l - 1
l + 1
l - 2

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Theory of Machine
The two parallel and coplanar shafts are connected by gears having teeth parallel to the axis of the shaft. This arrangement is known as

Spiral gearing
Bevel gearing
Spur gearing
Helical gearing

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Theory of Machine
Shaft revolving in a bearing is the following type of pair

Spherical pair
Higher pair
Lower pair
Cylindrical pair

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Theory of Machine
In order to facilitate starting of locomotive in any position, the cranks of a locomotive with two cylinders, are placed at

120° to each other
90° to each other
180° to each other
45° to each other

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Theory of Machine
The partial balancing means

Balancing partially revolving masses
Balancing partially reciprocating masses
Best balancing of engines
All of these

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Theory of Machine
Which of the following is a turning pair?

Lead screw of a lathe with nut
Shaft with collars at both ends fitted into a circular hole
Piston and cylinder of a reciprocating steam engine
Ball and a socket joint

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