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If reduction ratio of about 50 is required in a gear drive, then...

Q.  
If reduction ratio of about 50 is required in a gear drive, then the most appropriate gearing would be


Answer & Explanation

Generally worm and worm wheel are used for large gear ratios.

Thus correct option is: D.

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More Questions Theory of Machines:

Q.  
The distance between two parallel shafts is 20 mm and they are connected by an Oldham’s coupling. The driving shaft revolves at 180 rpm. What will be the maximum speed of sliding of the tongue of the intermediate piece along its groove?

A. 0.575 m/s

B. 0.454 m/s

C. 0.376 m/s

D. Indeterminate


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Q.  
In a flat belt drive the belt can be subjected to a maximum tension T and centrifugal tension Tc. What is the condition for transmission of maximum power?

A. T = Tc

B. T =√3Tc

C. T = 2Tc

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For spur with gear ratio greater than one, the interference is most likely to occur near the

A. Pitch point

B. Point of beginning of contact

C. Point of end of contact

D. Root of the tooth


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Balancing of a rigid rotor can be achieved by appropriately balancing masses in

A. A single plane

B. Two planes

C. Three planes

D. Four planes


Answer & Explanation
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