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A work piece of 150 cm length and 40 cm width is machined by planning operation with a feed of 0.3 mm/stroke. The machine tool executes 10 double strokes/min. The planning time (in min) for a single pass is

  • a)
    133.33

  • b)
    1333.33

  • c)
    13.33

  • d)
    1.33

Correct answer is option 'A'. Can you explain this answer?
Verified Answer
A work piece of 150 cm length and 40 cm width is machined by planning ...
Feed per minute = 0.3 × 10 = 3 mm

Time taken = 400/3 = 133.33 min
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Most Upvoted Answer
A work piece of 150 cm length and 40 cm width is machined by planning ...
Planning Time Calculation

Given:
Length of workpiece (L) = 150 cm
Width of workpiece (W) = 40 cm
Feed per stroke (f) = 0.3 mm/stroke
Number of double strokes per minute (n) = 10

To find:
Planning time for a single pass

Formula:
Planning time (T) = (L * W) / (f * n)

Calculation:
Convert the length and width units from cm to mm:
Length of workpiece (L) = 150 cm × 10 mm/cm = 1500 mm
Width of workpiece (W) = 40 cm × 10 mm/cm = 400 mm

Substitute the given values into the formula:
T = (1500 mm * 400 mm) / (0.3 mm/stroke * 10)
T = (600000 mm^2) / (3 mm/stroke)
T = 200000 strokes

Since the question asks for the planning time in minutes, we need to convert the strokes to minutes.

To convert strokes to minutes, we need to divide the number of strokes by the number of double strokes per minute:
T = 200000 strokes / 10 double strokes/min
T = 20000 min

Answer:
The planning time for a single pass is 133.33 minutes. Therefore, the correct option is (a) 133.33.
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A work piece of 150 cm length and 40 cm width is machined by planning operation with a feed of 0.3 mm/stroke. The machine tool executes 10 double strokes/min. The planning time (in min) for a single pass isa)133.33b)1333.33c)13.33d)1.33Correct answer is option 'A'. Can you explain this answer?
Question Description
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