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Mr. Dubey • 51.43K Points
Coach

Q. 1) In considering friction of a V-thread, the virtual coefficient of friction (μ1) is given by

(A) μ1 = μsinβ
(B) μ1 = μcosβ
(C) μ1= μ sinβ
(D) μ1= μ cosβ
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Mr. Dubey • 51.43K Points
Coach

Q. 2) The lower pairs are _________ pairs.

(A) Self-closed
(B) Force-closed
(C) Friction closed
(D) None of these
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Mr. Dubey • 51.43K Points
Coach

Q. 3) In a coupling rod of a locomotive, each of the four pairs is a ________ pair.

(A) Sliding
(B) Turning
(C) Rolling
(D) Screw
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Mr. Dubey • 51.43K Points
Coach

Q. 4) A kinematic chain is known as a mechanism when

(A) None of the links is fixed
(B) One of the links is fixed
(C) Two of the links are fixed
(D) None of these
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Mr. Dubey • 51.43K Points
Coach

Q. 5) A pantograph is a mechanism with

(A) Lower pairs
(B) Higher pairs
(C) Rolling pairs
(D) Turning pairs
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Mr. Dubey • 51.43K Points
Coach

Q. 6) A ball and a socket forms a

(A) Turning pair
(B) Rolling pair
(C) Screw pair
(D) Spherical pair
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Mr. Dubey • 51.43K Points
Coach

Q. 7) In a gear having involute teeth, the normal to the involute is a tangent to the

(A) Pitch circle
(B) Base circle
(C) Addendum circle
(D) Dedendum circle
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Mr. Dubey • 51.43K Points
Coach

Q. 8) A mechanism is an assemblage of

(A) Two links
(B) Three links
(C) Four or more than four links
(D) All of these
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Mr. Dubey • 51.43K Points
Coach

Q. 9) Which of the following statement is correct as regard to the difference between a machine and a structure?

(A) The parts of a machine move relative to one another, whereas the members of a structure do not move relative to one another
(B) The links of a machine may transmit both power and motion, whereas the members of a structure transmit forces only
(C) A machine transforms the available energy into some useful work, whereas in a structure no energy is transformed into useful work
(D) All of the above
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Mr. Dubey • 51.43K Points
Coach

Q. 10) In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The distance between fixed pivots of crank and followers is

(A) 95 mm
(B) Slightly less than 95 mm
(C) Slightly more than 95 mm
(D) 45 mm
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