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The shape of the speed-time characteristic shown above is:

This question was previously asked in
MPPGCL JE Electrical 28 April 2023 Shift 1 Official Paper
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  1. heptagram
  2. triquetra
  3. trapezoidal
  4. quadrilateral

Answer (Detailed Solution Below)

Option 4 : quadrilateral
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Detailed Solution

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Explanation

Phase 1 (Acceleration: P to Q)

  • The speed increases from 0 to V1 over time t1.
  • This forms an upward-sloping line.


Phase 2 (Constant Speed: Q to R)

  • The speed remains constant at V1 over time t2.
  • This forms a horizontal line.


Phase 3 (Deceleration: R to S)

  • The speed decreases from Vto 0 over time t3.
  • This forms a downward-sloping line.


The given speed-time graph consists of four distinct line segments, forming a closed shape with four sides. While it has a trapezoidal structure, the most general classification for it is a quadrilateral because a trapezoid is a specific type of quadrilateral.

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