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In a punching press, which of the following quantity is constant?

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+1 vote
in Machine Dynamics by (34.3k points)
In a punching press, which of the following quantity is constant?

(a) Load

(b) Torque

(c) Angular velocity

(d) Angle of rotation

This question was addressed to me by my school principal while I was bunking the class.

My query is from Flywheel in a Punching Press topic in chapter Turning Moment Diagrams and Flywheel of Machine Dynamics

1 Answer

0 votes
by (38.6k points)
Right choice is (b) Torque

To elaborate: The punching press works on the principle that the input torque acting remains constant when the action is performed whereas the load is varied.

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