The stroke of a shaping machine is 250 mm. It makes 30 double strokes per minute. The overall average speed of operation is

The stroke of a shaping machine is 250 mm. It makes 30 double strokes

1.	The stroke of a shaping machine is 250 mm. It makes 30 double strokes per minute. The overall average speed of operation is
A.	3.75 m/min
B.	5 m/min
C.	7.5 m/min
D.	15 m/min
Answer» D. 15 m/min

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The stroke of a shaping machine is 250 mm. It makes 30 double strokes per minute. The overall average speed of operation is

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