Mechanical Engineering - Theory of Machines - Theory of Machine

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Question - 1

In a kinematic chain, a quaternary joint is equivalent to

  • A one binary joint
  • B two binary joints
  • C three binary joints
  • D four binary joints

Question - 2

Which of the following is a turning pair?

  • A Piston and cylinder of a reciprocating steam engine
  • B Shaft with collars are both ends fitted in a circular hole
  • C Ball and socket joint
  • D Lead screw of lathe with nut

Question - 3

The motion transmitted between the teeth of gears in mesh is

  • A rolling
  • B sliding
  • C may be rolling or sliding depending upon the shape of teeth
  • D partly sliding and partly rolling

Question - 4

In a four bar linkage, if the lengths of shortest, longest and the other two links denoted by s, I, p and q, then it would result in Grashof's linkage provided that

  • A l + p < s + q
  • B l + s < p + q
  • C l + p > s +q
  • D l + p = s + q

Question - 5

If n links are connected at same joint, the joint is equivalent to

  • A (n - 2) binary joint
  • B (n - 1) binary joint
  • C (2n - 1) binary joint
  • D None of these

Question - 6

A ball and a socket joint form a

  • A sliding pair
  • B turning pair
  • C rolling pair
  • D spherical pair

Question - 7

Find the degree of freedom of mechanism.

  • A 0
  • B 1
  • C 2
  • D 3

Question - 8

In the shown mechanism, it is given that

AB = 30 cm, BD = 28 cm
BC = 60 cm, DC = 40 cm and speed of crank AB is 500 rpm then angular velocity of link BC is

  • A 23 rad/s
  • B 14.7 rad/s
  • C 19.6 rad/s
  • D None of these

Question - 9

If mechanism forms a structure then the number of degree of freedom (n) is

  • A 0
  • B 2
  • C 1
  • D -1

Question - 10

Which is an inversion of single slider crank chain?

  • A Watt's indicator diagram
  • B Beam engine
  • C Whitworth quick return motion mechanism
  • D None of the above