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Free download in PDF Theory of Machines Multiple Choice Questions(MCQs) with 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.
61
In gramophones for adjusting the speed of the turntable, the following type of governor is commonly employed
[A]
Pickering governor
[B]
Wilson Hartnell governor
[C]
Hartung governor
[D]
Inertia governor
Answer: Pickering governor
62
Governor is used in automobile to
[A]
to control SN
[B]
to control
[C]
decrease the variation of speed
[D]
all of the above
63
In an ideal machine, the output as compared to input is
[A]
equal
[B]
may be less or more depending on efficiency
[C]
less
[D]
more
64
When a ship travels in a sea, which of the effect is more dangerous
[A]
pitching
[B]
rolling
[C]
steering
[D]
all of the above
65
Transmission of power from the engine to the rear axle of an automobile is by means of
[A]
compound gears
[B]
worm and wheel method
[C]
Hooke’s joint
[D]
crown gear
66
The Ackermann steering mechanism is preferred to the Davis type in automobiles because
[A]
the former is mathematically accurate
[B]
the former is having turning pair
[C]
the former is most economical
[D]
the former is most rigid
Answer: the former is having turning pair
67
The indicator using Watt mechanism is known as
[A]
Thompson indicator
[B]
Richard indicator
[C]
Simplex indicator
[D]
Thomson indicator
Answer: Richard indicator
68
In automobiles the power is transmitted from gear box to differential through
[A]
Hooke’s joint
[B]
Knuckle joint
[C]
bevel gear
[D]
universal joint
69
In elliptical trammels
[A]
two pairs turning and two pairs sliding
[B]
three pairs turning and one pair sliding
[C]
all four pairs are turning
[D]
one pair turning and three pairs sliding
Answer: two pairs turning and two pairs sliding
70
The e.g. of a link in any mechanism would experience
[A]
angular acceleration
[B]
linear acceleration
[C]
no acceleration
[D]
both angular and linear accelerations
Answer: both angular and linear accelerations
71
It is required to connect two parallel shafts, the distance between whose axes is small and variable. The shafts are coupled by
[A]
Oldham’s coupling
[B]
flexible coupling
[C]
universal joint
[D]
knuckle joint
Answer: Oldham’s coupling
72
The Klein’s method of construction for reciprocating engine mechanism
[A]
is based on acceleration diagram
[B]
is a simplified form of instantaneous center method
[C]
utilises a quadrilateral similar to the diagram of mechanism for reciprocating engine
[D]
enables determination of Corioli’s component
Answer: utilises a quadrilateral similar to the diagram of mechanism for reciprocating engine
73
The Hooke’s joint consists of :
[A]
two forks
[B]
one fork
[C]
three forks
[D]
four forks
74
With single Hooke’s joint it is possible to connect two shafts, the axes of which have an angular misalignment up to
[A]
40°
[B]
30°
[C]
10°
[D]
20°
75
Flexible coupling is used because
[A]
it prevents shock transmission and eliminates stress reversals
[B]
it transmits shocks gradually
[C]
it is easy to disassemble
[D]
it is easy to engage and disengage
Answer: it prevents shock transmission and eliminates stress reversals
76
The advantage of the piston valve over D-slide valve is that in the former case
[A]
wear is less
[B]
power absorbed is less
[C]
both wear and power absorbed are low
[D]
the pressure developed being high provides tight sealing
Answer: both wear and power absorbed are low
77
The type of coupling used to join two shafts whose axes are neither in same straight line nor parallel, but intersect is
[A]
flexible coupling
[B]
universal coupling
[C]
chain coupling
[D]
Oldham’s coupling
Answer: universal coupling
78
The tendency of a body to resist change from rest or motion is known as
[A]
resisting force
[B]
Torque
[C]
mass
[D]
friction
79
In problem 47, the chain is constrained when
[A]
L.H.S. = R.H.S.
[B]
L.H.S. < R.H.S.
[C]
L.H.S. > R.H.S.
[D]
None of these
80
In problem 47, the chain is unconstrained when
[A]
L.H.S. = R.H.S.
[B]
L.H.S. > R.H.S.
[C]
L.H.S. < R.H.S.
[D]
none of the above
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