Theory of Machines Quiz | Theory of Machines Multiple Choice Questions(MCQs) with Answers

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Questions
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

Answer: to control SN
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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

Answer: equal
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

Answer: pitching
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

Answer: Hooke’s joint
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

Answer: Hooke’s 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

Answer: two 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°

Answer: 40°
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

Answer: inertia
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

Answer: L.H.S. = R.H.S.
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

Answer: L.H.S. < R.H.S.

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