Tubes are fixed to the tube sheet (a thick circular metallic plate) by the metho

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Question

Tubes are fixed to the tube sheet (a thick circular metallic plate) by the method of tube rolling and brazing (non-removable) or ferrule connection (removable). Thickness of the tube, sheet is normally __________ the outside diameter of the tube but in no case it should be less than 22 mm (7/8").

Options:

A . Half

B . Three fourth

C . Equal to

D . 1.5 times

Answer: Option C

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