The Scott-Russell mechanism consists of_________________?
A. Sliding and turning pairs
B. Sliding and rotary pairs
C. Turning and rotary pairs
D. Sliding pairs only
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Which of the following mechanism is obtained from lower pair________________?
A. gyroscope
B. pantograph
C. valve and valve gears
D. generated straight line motions
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Which of the following has sliding motion________________?
A. Crank
B. Connecting rod
C. Crank pin
D. Cross-head
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Automobile steering gear is an example of____________________?
A. higher pair
B. sliding pair
C. turning pair
D. rotary pair
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Kinematic pairs are those which have two elements that ______________?
A. Have line contact
B. Have surface contact
C. Permit relative motion
D. Are held together
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If some links are connected such that motion between them can take place in more than one direction, it is called_______________?
A. Incompletely constrained motion
B. Partially constrained motion
C. Completely constrained motion
D. Successfully constrained motion
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Cross head and guides form a _________________?
A. lower pair
B. higher pair
C. turning pair
D. rolling pair
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The values of velocity and acceleration of piston at near dead center for a slider-crank mechanism will be________________?
A. 0, and more than co2r
B. 0, and less than cov
C. 0, 0
D. Cor, 0
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When heat is Transferred by molecular collision, it is referred to as heat transfer by __________________?
A. Conduction
B. Convection
C. Radiation
D. Scattering
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The purpose of a link is to________________?
A. Transmit motion
B. Guide other links
C. Act as a support
D. All of the above
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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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