Turbine Performance and Effect of Throttle Governing MCQ

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• In throttle governing, flow rate is controlled by steam control valve.
  ক

  True

  খ

  False
• Pressure of the steam is __________ at the entry during throttle governing.
  ক

  increased

  খ

  decreased

  গ

  remained constant

  ঘ

  none of the mentioned
• When volume of flow is limited produced power _______
  ক

  Limits

  খ

  Varies

  গ

  There is no relation

  ঘ

  None of the mentioned
• Small deflections in the lever are magnified by _______
  ক

  mass flow Governor

  খ

  servo mechanism

  গ

  mass flow

  ঘ

  none of the mentioned
• In big turbines ________ is used to increase the lever sensitivity.
  ক

  Servo mechanism

  খ

  Centrifugal governor

  গ

  Gear mechanism

  ঘ

  None of the mentioned
• When the load is decreased the turbine shaft speed is ____________
  ক

  decreased

  খ

  increased

  গ

  remains constant

  ঘ

  none of the mentioned
• Sleeves of the governor rotate ___________
  ক

  perpendicularly

  খ

  parallel

  গ

  axially

  ঘ

  none of the mentioned
• Turbine shaft and rotating shafts are connected by a gear mechanism.
  ক

  True

  খ

  False
• In small turbines throttle valve is actuated by ________
  ক

  Pneumatic governor

  খ

  Hydraulic governor

  গ

  Centrifugal governor

  ঘ

  None of the mentioned
• In small turbines initial cost for throttle governing is ________
  ক

  Low

  খ

  High

  গ

  Same as of Big turbines

  ঘ

  None of the mentioned