Theory Of Machine MCQ Questions & Answers

91

Which of the following is an inversion of Single slider crank chain?

A) Beam engine B) Rotary engine C) Oldham’s coupling D) Elliptical trammel

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Answer & Solution

Answer: Option B

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92

In the below figure, PC is the connecting rod and OC is the crank making an angle $$\theta $$ with the line of stroke PO and rotates with uniform angular velocity at $$\omega $$ rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral CQNO, if N coincides with O, then
Theory of Machine mcq question image

A) Acceleration and velocity of the piston P is zero B) Acceleration and velocity of the piston P is maximum C) Acceleration of the piston P is zero and its velocity is maximum D) Acceleration of the piston P is maximum and its velocity is zero

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Answer & Solution

Answer: Option C

Solution:

93

The Coriolis component of acceleration leads the sliding velocity by

A) 45° B) 90° C) 135° D) 180°

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Answer & Solution

Answer: Option B

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94

Which of the following mechanisms produces mathematically an exact straight line motion?

A) Grasshopper mechanism B) Watt mechanism C) Peaucellier's mechanism D) Tchebicheff mechanism

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Answer & Solution

Answer: Option C

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95

If the opposite links of a four bar linkage are equal, the links will always form a

A) Triangle B) Rectangle C) Parallelogram D) Pentagon

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Answer & Solution

Answer: Option C

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96

The periodic time of one oscillation for a simple pendulum is

A) $$2\pi \sqrt {\frac{{\text{g}}}{l}} $$ B) $$\frac{1}{{2\pi }}\sqrt {\frac{{\text{g}}}{l}} $$ C) $$2\pi \sqrt {\frac{l}{{\text{g}}}} $$ D) $$\frac{1}{{2\pi }}\sqrt {\frac{l}{{\text{g}}}} $$

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Answer & Solution

Answer: Option C

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97

When a body is subjected to transverse vibrations, the stress induced in a body will be

A) Shear stress B) Bending stress C) Tensile stress D) Compressive stress

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Answer & Solution

Answer: Option B

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98

Which gear train is used for higher velocity ratios in a small space?

A) Simple gear train B) Compound gear train C) Reverted gear train D) Epicyclic gear train

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Answer & Solution

Answer: Option D

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99

The number of links and instantaneous centers in a reciprocating engine mechanism are

A) 4, 4 B) 4, 5 C) 5, 4 D) 4, 6

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Answer & Solution

Answer: Option D

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100

Angle of action of cam is defined as the angle

A) Of rotation of the cam for a definite displacement of the follower B) Through which the cam rotates during the period in which the follower remains in the highest position C) Moved by the cam from the instant the follower begins to rise, till it reaches its highest position D) Moved by the cam from beginning of ascent to the termination of descent

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Answer & Solution

Answer: Option D

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Theory Of Machine MCQ Questions & Answers | Mechanical Engineering