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The size of a gear is usually specified by

A. pressure angle
B. pitch circle diameter
C. circular pitch
D. diametral pitch

Option B

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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	When two non-intersecting and non-coplaner shafts are connected by gears, the arrangement is known as A. spur gearing B. helical gearing C. bevel gearing D. spiral gearing