Stability Factors of AC Transmission System - 3 MCQ

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• An overhead transmission line ________ if loading is higher than the Surge Impedance Loading.
  ক

  draws reactive power

  খ

  draws capacitive power

  গ

  generates reactive power

  ঘ

  generates inductive power
• Limited power transfer capability occurs due to a weak network aggravated by generators hitting their ________ power capability limits
  ক

  reactive

  খ

  resistive

  গ

  capacitive

  ঘ

  inductive
• Voltage stability is triggered by having loads which attempt to draw power which is ________ the maximum capability of generation and transmission.
  ক

  beyond

  খ

  equal to

  গ

  below

  ঘ

  much below
• Angular stability problem means ________
  ক

  loss of synchronism

  খ

  loss of capacitive compensation

  গ

  loss of power

  ঘ

  loss of inductive compensation
• Problems related to angular stability is one of the major stability problems in interconnected transmission network.
  ক

  True

  খ

  False
• A power transmission system is said to be stable when it ________
  ক

  can withstand disturbances and come to an equilibrium

  খ

  cannot withstand disturbances

  গ

  cannot come to an equilibrium after small disturbances

  ঘ

  cannot come to an equilibrium after large disturbances
• The thermal limit is the main limiting factor for deciding loadability of EHV transmission lines.
  ক

  True

  খ

  False
• The thermal limit is the main limiting factor for deciding loadability of short transmission lines.
  ক

  True

  খ

  False
• The effective SIL of a capacitor compensated line is ________ an uncompensated line.
  ক

  higher than

  খ

  lower than

  গ

  is equal to

  ঘ

  higher or lower than
• In order to prevent overvoltages at light loads, which of the following should be connected to a transmission system?
  ক

  Shunt reactors

  খ

  Resistors

  গ

  Capacitors

  ঘ

  Voltmeters