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The number of slots in a 25 mm castle nut is

A. 2
B. 4
C. 6
D. 8

Option C

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For unequal width of butt straps, the thickness of butt straps are A. 0.75 t for wide strap on the inside and 0.625 t for narrow strap on the outside B. 0.75 t for narrow strap on the inside and 0.625 t for wide strap on the outside C. 0.75 t for both the straps on the inside and outside D. 0.625 t for both the straps on the inside and outside	An open belt drive is used when A. shafts are arranged parallel and rotate in the opposite directions B. shafts are arranged parallel and rotate in the same directions C. shafts are arranged at right angles and rotate in one definite direction D. driven shaft is to be started or stopped whenever desired without interferring with the driving shaft