Questions 11–16 of 16. Imported answers require independent review unless marked reviewed.

Topic practice 16 questionsPage 2 of 2

Question 36

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MEMCQ2 marksNeeds review
The crank of a slider-crank mechanism rotates counter-clockwise (CCW) with a constant angular velocity

, as shown.
Diagram for Mechanical Engineering question 36

Assume the length of the crank to be

.
Using exact analysis, the acceleration of the slider in the

-direction, at the instant shown, where the crank is parallel to

-axis, is given by
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Question 8

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For an Oldham coupling used between two shafts, which among the following statements are correct? I. Torsional load is transferred along shaft axis. II. A velocity ratio of 1:2 between shafts is obtained without using gears. III. Bending load is transferred transverse to shaft axis. IV. Rotation is transferred along shaft axis.
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Question 32

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In a cam-follower, the follower rises by

as the cam rotates by

(radians) at constant angular velocity

(radians/s). The follower is uniformly accelerating during the first half of the rise period and it is uniformly decelerating in the later half of the rise period. Assuming that the magnitudes of the acceleration and deceleration are same, the maximum velocity of the follower is
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Question 12

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In a slider-crank mechanism, the lengths of the crank and the connecting rod are 100 mm and 160 mm, respectively. The crank is rotating with an angular velocity of 10 radian/s counter-clockwise. The magnitude of linear velocity (in m/s) of the piston at the instant corresponding to the configuration shown in the figure
Diagram for Mechanical Engineering question 12

is __________

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Question 45

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In an epicyclic gear train, shown in the figure, the outer ring gear is fixed, while the sun gear rotates counterclockwise at 100 rpm. Let the number of teeth on the sun, planet and outer gears to be 50, 25, and 100, respectively. The ratio of magnitudes of angular velocity of the planet gear to the angular velocity of the carrier arm is __________.
Diagram for Mechanical Engineering question 45


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Question 47

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For an inline slider-crank mechanism, the lengths of the crank and connecting rod are 3 m and 4 m, respectively. At the instant when the connecting rod is perpendicular to the crank, if the velocity of the slider is 1 m/s, the magnitude of angular velocity (upto 3 decimal points accuracy) of the crank is ________ radian/s.

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