Advanced Kinematics and Dynamics of Machinery Mid - I, September - 2014

1.Dynamics of machines deals with
  • Relative motion between the parts, neglecting the consideration of forces
  • Forces acting on the parts of machines
  • The apparatus for applying mechanical power
  • Number of inter related parts, each having definite motion
Answer: B
2.Which of the following forms lower pair ,
  • Piston & cylinder
  • Cam & follower
  • Belt drive
  • Gear
Answer: A
3.If three bodies have plane motion, their instantaneous centers
  • Lie different planes
  • Lie in plane perpendicular to plane of motion
  • Lie in same plane of motion
  • Lie in straight line
Answer: D
4.Mobility of a kinematic chain can be obtained from
  • Kutzbach criterion
  • Robert’s mechanism
  • Gross-hopper mechanism
  • Grublers criterion
Answer: A
5.Which of the following is sliding pair
  • Bolt &nut
  • Ball & socket joint
  • Bolt & pulley
  • cross heads and guides
Answer: D
6.A planar mechanism has 8 links and 10 rotary joints, the number of degrees of freedom of mechanism, using Gruebler’s criterion thread.
  • 0
  • 1
  • 2
  • 3
Answer: B
7.For a Four bar linkage, the sum the shortest and longest link lengths cannot be greater than the sum of remaining two link lengths is
  • Reuleaux law
  • Grashoff law
  • Kutzbach Law
  • Grubler’s law
Answer: B
8.Graphical method of finding the conjugate points and the radius of curvature of the path of a moving point by knowledge of curvature of centrodes
  • Hartmann construction
  • Bobillier Construction
  • Good man Construction
  • None
Answer: C
9.Scott – Russel mechanism consists of
  • Turning pair only
  • Rotary pair only
  • sliding & turning pair
  • Turning & rotary pair
Answer: C
10.Kinematic chain must have
  • two links & two turning pair
  • two links & three turning pair
  • four links & two turning pair
  • four links & four turning pair
Answer: B
11.Kutzbach criterion for determining number of degrees of freedom or movability “ n” of plane mechanism is ______________
Answer: n = 3 ( L – 1 ) - 2 j – h
12.In a kinematic chain the relationship between number of links L and the number of joints J is ___________
Answer: L = (2/3) ( J + 2)
13.Spatial motion problems requires ________________views for true length of velocity and acceleration vectors.
Answer: Auxiliary
14.___________ mechanism is used to enlarge or reduce the size of drawing.
Answer: Pantograph
15.If there are “ L” number of links in mechanism , then the number of possible inversions would be _________________.
Answer: L
16.The vector loop equation r+s+t+C=0 also called vector tetrahedron equation because the individual vectors can be define four of the six edges of a _____________
Answer: Tetrahedron
17.Robert-chebychev theorem were also termed as _______________by Harten Berg and denavit.
Answer: Cognate Linkage
18.Peaucellier mechanism requires_____________ number of links.
Answer: 8
19.As per Euler-savery equations ‘Os’ is the centre of curvature of point ‘S’, then ‘Os’ and ‘S’ called _____________________________.
Answer: Toggle lead
20.A mechanism with one degree of freedom is said to be a ______________mechanism.
Answer: Constrained