Mechanisms and Mechanical Design Mid - I, September - 2014

1.Study of relative motion of body is known as
  • Statics
  • Dynamics
  • Kinematics
  • Kinetics
Answer: C
2.If there is no relative moment between link of a closed kinematic chain it is said to be
  • Mechanism
  • Machine
  • Structure
  • Chain
Answer: C
3.A ball and socket joint like car mirror or pen stand is a form of
  • Screw Pair
  • Sliding Pair
  • Turning Pair
  • Spherical Pair
Answer: D
4.A circular bar or shaft in a circular hole is an example of ______ constrained motion
  • Completely
  • In completely
  • Successfully
  • unsuccessful
Answer: B
5.In a simple four bar mechanism input link is known as
  • Crank
  • Rocker
  • Couple
  • Frame
Answer: A
6.Which of the following is not the example for double slider crank chain
  • Electrical Trammel
  • Scotch Yoke mechanism
  • Old ham Coupling
  • Whit worth quick return mechanism
Answer: D
7.The total number of instantaneous centers for a mechanism consist of ‘n’ links
  • n+1
  • n(n-1)/2
  • n(n-1)
  • n-1
Answer: B
8.Coriolis components of acceleration is
  • ω+v
  • ωv
  • ω/v
  • 2ωv
Answer: D
9.The component of acceleration parallel to the velocity of a particle at the given instant is called
  • Radial Component
  • Tangential Component
  • Coriolis components
  • none
Answer: B
10.The engine or propeller of an aero plane rotates in cock wise direction when seen from the tail end and aero plane takes left turn The effect of reactive gyroscopic couple will
  • Raise the nose
  • raise the tail
  • Dip the nose
  • dip the tail
Answer: A
11.According to kennedy theorem if three bodies moves relative to each other then their instantaneous centers will lie on a _______________
Answer: Straight Line
12.The effect of reactive gyroscopic couple of a naval ship in rolling is ___________
Answer: No Effect
13.A _____________ is a collection of mechanisms which transmit force from the source of power through resistant body to perform useful mechanical work.
Answer: Machine
14.Kinematics is derived from Greek word kinema means ______________
Answer: Motion
15.Toothed gearing, belts and cam and follower examples of _______________ Pair.
Answer: Higher
16.The ____________ mechanism was used in early days as an engine mechanism which give long stroke with very short crank.
Answer: Grasshopper
17.The locus of instantaneous centers relative to the body itself is called _____________ centrode.
Answer: Body
18.When the engine propeller rotates in anti clock wise direction and the aeroplane take _________turn the reactive gyroscopic couple will be to raise the nose and dip the tail.
Answer: Right
19.A navel ship is pitching downward the effect of reactive gyroscopic couple will try to move the ship towards _________________
Answer: Port Side
20.The mechanism is mostly used in a shaping and slotting machines is ______________
Answer: Quick return Mechanism