Rectilinear motion of piston is converted into rotary by_______________?
A. Cross head
B. Slider crank
C. Connecting rod
D. Gudgeon pin
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Any point on a link connecting double slider crank chain will trace a ________________?
A. Straight line
B. Circle
C. Ellipse
D. Parabola
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Pulley in a belt drive acts as_______________?
A. Cylindrical pair
B. Turning pair
C. Rolling pair
D. Sliding pair
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Which of the following disciplines provides study of the relative motion between the parts of a machine and the forces acting on the parts___________________?
A. Theory of machines
B. Applied mechanics
C. Mechanisms
D. Kinetics
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If two moving elements have surface contact in motion, such pair is known as_________________?
A. sliding pair
B. rolling pair
C. surface pair
D. lower pair
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The type of pair formed by two elements which are so connected that one is constrained to turn or revolve about a fixed axis of another element is known as__________________?
A. Turning pair
B. Rolling pair
C. Sliding pair
D. Spherical pair
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President of the United Nations General Assembly for the 73rd session María Fernanda Espinosa visited Pakistan on?
A. 18 jan 2019
B. 19 jan 2019
C. 20 jan 2019
D. 21 jan 2019
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Shaft revolving in a bearing is the following type of pair________________?
A. Lower pair
B. Higher pair
C. Spherical pair,
D. Cylindrical pair
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The example of rolling pair is________________?
A. Bolt and nut
B. Lead screw of a lathe
C. Ball and socket joint
D. Ball bearing and roller bearing
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Which of the following disciplines provides study of relative motion between the parts of a machine______________?
A. theory of machines
B. applied mechanics
C. mechanisms
D. kinetics
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Word of the Day
29 Sep
Stern
(of a person or their manner) serious and unrelenting, especially in the assertion of authority and exercise of discipline.
سخت گیر، سخت ، کڑا

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