Machine Kinematics

Relation Between Linear Motion and Angular Motion

Question 1
Marks : +2 | -2
Pass Ratio : 100%
Which of the following disciplines provides study of the relative motion between the parts of a machine and the forces acting on the parts?
theory of machines
applied mechanics
kinetics
Explanation:
The study of inertia forces arising from the combined effect of the mass and motion of the parts is called kinetics.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
Any point on a link connecting double slider crank chain will trace a
straight line
circle
ellipse
parabola
Explanation:
One of the inversions of a double slider crank chain is elliptical trammels. So, from the above given options ellipse is best suited.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
Which of the following disciplines provides study of relative motion between the parts of a machine?
theory of machines
applied mechanics
kinetics
Explanation:
The study of inertia forces arising from the combined effect of the mass and motion of the parts is called kinetics.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
Which of the following disciplines provides study of inertia forces arising from the combined effect of the mass and motion of the parts?
theory of machines
applied mechanics
kinetics
Explanation:
The study of inertia forces arising from the combined effect of the mass and motion of the parts is called kinetics.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
The example of rolling pair is
bolt and nut
lead screw of a lathe
ball and socket joint
ball bearing and roller bearing
Explanation:
In ball bearing and roller bearing one element rolls over the other element. Hence, they are examples of rolling pair.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
If two moving elements have surface contact in motion, such pair is known as
sliding pair
rolling pair
surface pair
lower pair
Explanation:
when two elements of a pair have a surface contact when relative motion takes place and the surface of one element slides over the surface of the other, the pair formed is known as lower pair.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
The example of lower pair is
shaft revolving in a bearing
straight line motion mechanisms
automobile steering gear
all of the mentioned
Explanation:
In all the mentioned elements there is surface contact between the two elements. Hence, they form a lower pair.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
The type of pair formed by two elements which are so connected that one is constrained to turn or revolve about a fixed axis of another element is known as
turning pair
rolling pair
sliding pair
spherical pair
Explanation:
When two elements of a pair are connected in such a way that one can only turn or revolve about a fixed axis of another link, the pair is known as turning pair.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
Pulley in a belt drive acts as
cylindrical pair
turning pair
rolling pair
sliding pair
Explanation:
When the two elements of a pair are connected in such a way that one rolls over another fixed link, the pair is known as rolling pair. In belt and pulley, the belt rolls over the pulley.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is a lower pair?
ball and socket
piston and cylinder
cam and follower
both a and b
Explanation:
In both ball and socket and piston cylinder there is surface contact between the two elements. Hence, they form a lower pair.