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Question

What will be the effect if the angle of swash plate decreases?

This question was previously asked in
RRB ALP/Technician 2018 CBT 2 Electronics Mechanic Question Paper (23-Jan-2019) (Shift 1)
The correct answer is
Flow rate will decrease

Swash Plate Angle Impact on Flow Rate

The angle of the swash plate in hydraulic systems, particularly in axial piston pumps, directly influences the pump's displacement and, consequently, the flow rate.

  • Swash Plate Function: The swash plate converts the rotary motion of the drive shaft into the reciprocating (up-and-down) motion of the pistons.
  • Angle and Stroke: A larger angle results in a longer piston stroke. A longer stroke means each piston displaces more fluid per revolution.
  • Angle and Flow Rate: Conversely, a smaller angle leads to a shorter piston stroke, displacing less fluid per revolution.

Effect of Decreasing Swash Plate Angle

When the angle of the swash plate decreases:

  • The piston stroke length is reduced.
  • The displacement of the pump decreases.
  • Result: The overall flow rate delivered by the pump decreases.

Therefore, reducing the swash plate angle leads to a lower flow rate.

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Important Questions from Pneumatics and Hydraulics

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