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Free download in PDF Theory of Machines Objective Type Questions & Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
(21)
Sensitivity of an isochronous governor is
[A]
infinite
[B]
two
[C]
zero
[D]
one
(22)
In which one of the following is a flywheel generally employed
[A]
Punching machine
[B]
Gear bor
[C]
Electric motor
[D]
Lathe
(23)
A pair of action and reaction forces acting on a body are known as
[A]
constraint forces
[B]
applied forces
[C]
accelerating forces
[D]
inertia forces
Answer: constraint forces
(24)
The gear train usually employed in clocks is a
[A]
reverted gear train
[B]
differential gear
[C]
simple gear train
[D]
sun and planet gear
Answer: reverted gear train
(25)
The difference between space width and tooth thickness is
[A]
Tooth space
[B]
Backlash
[C]
Clearance
[D]
Flank
(26)
Select the positive drive amongst the following:
[A]
gear drive
[B]
chain drive
[C]
rope drive
[D]
V-belt drive
(27)
The example of lower pair is
[A]
automobile steering gear
[B]
straight line motion mechanisms
[C]
shaft revolving in a bearing
[D]
all of the above
(28)
If two moving elements have surface contact in motion, such pair is known as
[A]
higher pair
[B]
lower pair
[C]
sliding pair
[D]
rolling pair
(29)
Which of the following is a lower pair
[A]
ball and socket
[B]
piston and cylinder
[C]
cam and follower
[D]
(A) and (B) above
Answer: (A) and (B) above
(30)
Which of the following disciplines provides study of the relative motion between the parts of a machine and the forces acting on the parts
[A]
applied mechanics
[B]
theory of machines
[C]
mechanisms
[D]
kinetics
Answer: theory of machines
31
Which of the following disciplines provides study of relative motion between the parts of a machine
[A]
kinematics
[B]
kinetics
[C]
theory of machines
[D]
applied mechanics
32
Which of the following disciplines provides study of inertia forces arising from the combined effect of the mass and the motion of the parts
[A]
applied mechanics
[B]
theory of machines
[C]
kinetics
[D]
mechanisms
33
Pitch point on a cam is
[A]
any point on pitch curve
[B]
the point on cam pitch curve having the maximum pressure angle
[C]
any point on pitch circle
[D]
the point on cam pitch curve having the minimum pressure angle
Answer: the point on cam pitch curve having the maximum pressure angle
34
Rectilinear motion of piston is converted into rotary by
[A]
cross head
[B]
slider crank
[C]
connecting rod
[D]
gudgeon pin
35
A universal joint is an example of
[A]
higher pair
[B]
lower pair
[C]
rolling pair
[D]
sliding pair
36
The purpose of a link is to
[A]
act as a support
[B]
transmit motion
[C]
guide other links
[D]
all of the above
37
Any point on a link connecting double slider crank chain will trace a
[A]
ellipse
[B]
parabola
[C]
straight line
[D]
circle
38
The example of rolling pair is
[A]
ball and socket joint
[B]
ball bearing and roller bearing
[C]
bolt and nut
[D]
lead screw of a lathe
Answer: ball bearing and roller bearing
39
Pulley in a belt drive acts as
[A]
rolling pair
[B]
sliding pair
[C]
cylindrical pair
[D]
turning pair
40
The example of spherical pair is
[A]
bolt and nut
[B]
lead screw of a lathe
[C]
ball and socket joint
[D]
ball bearing and roller bearing
Answer: ball and socket joint
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