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Kinematic of Machine_Introduction
Kinematic of Machine_Introduction
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1
The Kutzbach criterion for determining the number of degrees of freedom (n) is (where l = number of links, j = number of
n = 2(l-1)-3j-h
n = 2(l-1)-2j-h
n = 3(l-1)-2j-h
n = 3(l-1)-3j-h
2
A rigid body possesses_____degrees of freedom.
4
6
1
2
3
Find the mobility of the following three bar mechanism.
3
2
0
1
4
Identify this simple machine!
pulley
Wheel and Axle
wedge
Screw
5
A higher pair has__________.
Point contact
Surface contac
None of the above
No contact
6
Find the mobility of the given mechanism. (Hint : Use DOF Equation )
1
3
0
2
7
What is the use of beam engine?
To convert rotary motion into oscillatory motion
To convert oscillatory motion into rotary motion
To convert rotary motion into reciprocating motion
To convert reciprocating motion into rotary motion
8
______ is the study to know the displacement, velocity and acceleration of a part of the machine.
Statics
All of the above
Kinetics
Kinematics
9
In a ball bearing, ball and bearing forms a
Screw pair
Spherical pair
Turning pair
Rolling pair
10
Which of the following is an inversion of Single slider crank chain?
Oldham’s couplin
Beam engine
Elliptical trammel
Rotary engine
11
Identify this simple machine!
wedge
Wheel and Axle
Screw
pulley
12
A railway bridge is an example of a machine.
no
yes
13
Which of the following is a higher pair?
Turning pair
None
Screw pair
Belt and pulley
14
If the link next to the shortest link is fixed, what type of mechanism is obtained?
Double crank mechanism
Linkage is not planar
Crank rocker mechanism
Double rocker mechanism
15
Which of the following is an open pair?
Leave screw and nut
None of the above
Journal bearing
Ball and Socket joint
16
Identify this simple machine!
inclined plane
lever
wedge
pulley
17
A lower pair has
(i) Surface contact (ii) Line contact (ii) Point contact
i & iii
i & ii
All of the above
ii & iii
18
In the given inversion of four bar chain, the link 1 is fixed. Which one is it?
Beam engine
Bull engine
Coupling rod of a locomotive
Rotary internal combustion engine
19
Identify this simple machine!
Screw
wedge
Wheel and Axle
pulley
20
The kinematic chain showed in the picture is:
close
open
simple
complex
21
The relative motions between different links changes due to the process of inversion. True or false?
True
False
22
The kinematic chain showed in the picture is:
close
simple
open
complex
23
The following mechanism is an inversion of a single slider crank chain obtained by fixing link 3. What is the name?
Pendulum pump
Gnome engine
Oscillating cylinder engine
Watt’s indicator mechanism
24
Which of the following is an inversion of four bar kinematic chain?
Rotary engine
Beam engine
Reciprocating engine
Oscillating engine
25
kinematic pair cannot be classified according to
Number of links connected
Nature of mechanical constraints between the links
Type of relative motion between the links
Nature of contact between the links
26
The angular velocity (in rad/s) of a body rotating at N r.p.m. is
π N/60
π N/180
2 π N/60
π N/120
27
Theory of machines ____ deals with various forces when the body is stationary.
Kinematics
Statics
Kinetics
All of the above (Ans:c)
28
kinematic pair cannot be classified according to
Nature of mechanical constraints between the links
Nature of contact between the links
Number of links connected
Type of relative motion between the links
29
________ is an inversion of Double slider crank chain.
Reciprocating engine
Coupling rod of a locomotive
Scotch yoke mechanism
Hand pump
30
A kinematic chain can be:
simple, multiple, open, close
mobile structure
fixed, mobile, ground connected
fixed bearing structure
