Scotch yoke mechanism is used to generate

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ISRO VSSC Technical Assistant Mechanical 25 Feb 2018 Official Paper
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  1. Inversions
  2. Square roots
  3. Logarithms
  4. Sine functions

Answer (Detailed Solution Below)

Option 4 : Sine functions
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Explanation:

Scotch yoke mechanism

F1 S.S Madhu 07.03.20 D2

  • The scotch yoke is a basic mechanism that converts rotary motion into reciprocating linear motion using a pin in a moving slot.
  • An application for this mechanism is to open and close valves.
  • The crank is connected to the slider by the pin, and as the crank turns the pin it moves the slider.
  • Though the goal of the slider-crank and scotch yoke mechanisms is the same, their performance differs slightly.
  • The scotch yoke mechanism will generate perfect simple harmonic motion (sine wave), whereas the slider-crank mechanism will produce a slightly distorted sine wave.
  • Because the output is simple harmonic motion, the scotch yoke mechanism is commonly used in testing equipment to simulate simple harmonic vibration.
  • A major disadvantage to a scotch yoke mechanism is the high contact pressure and wear.
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