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 & Solution

Correct Answer: Option C

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5 Comments

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Ritu Jain 6 years ago

250×30×2= 15000 mm/min
15000÷2
7500mm/min
7.5m/min

Bhargav Javvaji 6 years ago

Average speed = Distance / Time
= (30*250)/ (1000)
Average speed = (7500)/(1000) = 7.5m/min.

Shashikant Verma 6 years ago

30*250/1000=7.5 m/min

Madhavan Palmani 7 years ago

The Correct answer is D 15 m/min. (Reference: S.K. Modal Production Technology notes) but at most places, Ans given is option C.

In simple language:
Average Speed = Total Distance/ Total Time.
Average Speed = (30 * 2 * .250)/1 because Total time is 1 minute.
= 15 m/min.

Janish James 7 years ago

In this Site Ans 7.5
Soloution On Speed = 0.25 ×30= 7.5m/min

In other site Ans is 15
Here; speed = 2 stoke ie : 30×2=60
So 60×0.25=15m/min

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

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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