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Which of the following is not true about the clamping force and clamping of dial indicators?

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in Engineering Metrology by (829k points)
Which of the following is not true about the clamping force and clamping of dial indicators?

(a) Too great clamping force may jam the plunger

(b) Clamp should be loose in case of back lug

(c) Tight clamp will always cause slip

(d) Steel stem are best for clamping

The question was posed to me in class test.

Origin of the question is General Care of Dial Gauges in portion Dial Indicators and Indicating Gauges of Engineering Metrology

1 Answer

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Best answer
The correct answer is (a) Too great clamping force may jam the plunger

Easy explanation: If the dial gauge is clamped by the steel stem, then a great a clamping force will cause the jamming of plunger in the stem. The fixture hole must be smooth and true to avoid distortion, locking and binding of stem in it.

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