What is the maximum speed up to which the clamp can be rotated in a torsion test?

What is the maximum speed up to which the clamp can be rotated in a torsion test? Correct Answer 60rpm

The torsion test experimental set up contains two clamps. One is rotatable and the other fixed. The rotatable clamp is moved at a rate of 60rpm (rotations per minute) at maximum. This is because exceeding that speed might cause heating.
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