151) When two non-intersecting and non-coplaner shafts are connected by gears, the arrangement is known as helical gearing.
Answer is:
Wrong
Related Theory of Machines MCQ with Answers
Answer is:
force-closed pair
Explanation:
When the two elements of a pair are not connected mechanically but are kept in contact by the action of external forces, the pair is said to be a force-closed pair. The cam and follower is an example of force closed pair, as it is kept in contact by the forces exerted by spring and gravity.
Answer is:
equal to
Answer is:
each of the four pairs is a turning pair
Explanation:
Four bar chain or Quadric cycle chain consists of four links, each of them forms a turning pair. The inversions of four bar chain are as follows.
* Beam Engine (Crank and lever mechanism)
* Coupling rod of a locomotive (Double crank mechanism)
* Watt's indicator mechanism (Double lever mechanism)
