Kinematics Of Machines — Winter 2018

Discuss with neat sketch different types of steering gear mechanism of automobile in detail.

Define Number of degree of freedom and determine the number of degree of freedom for the mechanisms shown in Fig.1, 2, Figure:1 Figure:2 Figure:3

Explain “The common normal at the point of contact between a pair of teeth must always pass through the pitch point”

Define : 1. Space Centrode 2. Body Centrode 3. Fixed instantaneous Centre 4. Permanent instantaneous Centre

What is meant by inversion of mechanism? Sketch double slider cranks chain & draw its inversion.

Define the following terms.(1)Link(2)Higher pair(3)Ternary Joint(4)Locked chain(5)constrained Motion(6)Degree of freedom(7)Quaternary link.

Write Short Note on Straight-Line Mechanism.1

Derive an expression for the ratio of shafts velocities for Hooke’s joint and draw the polar diagram depicting the salient features of driven shaft speed.

Adouble universal joint is used to connect two shafts in the same plane. The intermediate shaft is inclined at an angle of 20° to the driving shaft as well as the driven shaft. Find the maximum and minimum speed of the intermediate shaft and the driven shaft if the driving shaft has a constant speed of 500 r.p.m.

The dimensions and configuration of the four bar mechanism, are as follows : P A = 300 mm; P B = 360 mm; AB = 36mm, and P P = 600 mm The angle A P P = 60°. The crank P Ahas an angular velocity of 10 rad/s and an angular121 acceleration of 30 rad/s2, both clockwise.Determine the angular velocities and angular accelerations of P B, and AB and the velocity and acceleration of the2 joint B.

Define Centrifugal tension for flat belt also discuss the effect of centrifugal tension on power transmission.

Explain cariole’s component of acceleration.

Explain the Phenomenon of “slip”& “creep” in a belt drive.

State & prove the law of gearing.

Explain Epicycle gear train with neat sketch.

What are different types of chains? Explain with neat sketches, the power transmission chains.

What are the various types of the torques in an epicyclic gear train ?2