Hartnell Governor MCQ

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• A spring controlled governor is said to be stable if the controlling force line when produced intersects the Y-axis
  ক

  at the origin

  খ

  below the origin

  গ

  above the origin

  ঘ

  any of the mentioned
• A spring controlled governor is found unstable. It can be made stable by
  ক

  increasing the spring stiffness

  খ

  decreasing the spring stiffness

  গ

  increasing the ball mass

  ঘ

  decreasing the ball mass
• A spring controlled governor is said to be isochronous when the controlling force
  ক

  increases as the radius of rotation decreases

  খ

  increases as the radius of rotation increases

  গ

  decreases as the radius of rotation decreases

  ঘ

  remains constant for all radii of rotation
• A spring controlled governor is said to be unstable when the controlling force
  ক

  increases as the radius of rotation decreases

  খ

  increases as the radius of rotation increases

  গ

  decreases as the radius of rotation decreases

  ঘ

  remains constant for all radii of rotation
• The power of a Porter governor is equal to
  ক

  c2/1 + 2c (m + M)gh

  খ

  2c2/1 + 2c (m + M)gh

  গ

  3c2/1 + 2c (m + M)gh

  ঘ

  4c2/1 + 2c (m + M)gh
• Power of a governor is the
  ক

  mean force exerted at the sleeve for a given percentage change of speed

  খ

  workdone at the sleeve for maximum equilibrium speed

  গ

  mean force exerted at the sleeve for maximum equilibrium speed

  ঘ

  none of the mentioned