Rotating Amplifiers MCQ

Test your knowledge with important Rotating Amplifiers MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Rotating Amplifiers MCQs at Bissoy

• Mark the order for the decreasing order of the voltage regulation for dc generators.
  ক

  DC shunt generator > level compound generator > Differential compound generator

  খ

  DC shunt generator < level compound generator < Differential compound generator

  গ

  Level compound generator > DC shunt generator > Differential compound generator

  ঘ

  Level compound generator < DC shunt generator < Differential compound generator
• The delay of the commutation occurs due base cause of emf induced due to _________
  ক

  self inductance, mutual inductance

  খ

  self inductance

  গ

  mutual inductance

  ঘ

  leakage inductance
• Interpoles provide mmf more than armature mmf in a dc machine.
  ক

  True

  খ

  False
• Amplidynes are best applicable in _________
  ক

  feedback control systems with regulated power supply.

  খ

  power supply

  গ

  speed control of large motors

  ঘ

  All of the mentioned
• In amplidynes, the resultant d-axis flux is _________
  ক

  field flux

  খ

  difference of field flux and main flux

  গ

  sum of field flux and main flux

  ঘ

  cross magnetizing flux
• An amplidyne, d-axis flux is always neutralized due to _________
  ক

  compensating winding at all possible loads

  খ

  interpoles at all specified loading

  গ

  feedback at all possible loads

  ঘ

  feedback at fixed loading
• Metadyne is _________ feedback with respect to main ___________
  ক

  negative, current

  খ

  negative, voltage

  গ

  positive, current

  ঘ

  positive, voltage
• In cross field rotating amplifiers, there is _________
  ক

  two stage of flux generators

  খ

  three stage of flux generators

  গ

  four stage of flux generators

  ঘ

  eight stage of flux generators
• The cross field machines have _________
  ক

  two fluxes electrically in quadrature

  খ

  two fluxes mechanically in quadrature

  গ

  one set of brushes per pole

  ঘ

  all of the mentioned
• In rotating amplifiers, armature reaction mmf of the first stage is made to act as field flux for second stage.
  ক

  True

  খ

  False
• The ordinary dc machines are not favourable as amplidynes due to _________
  ক

  sluggish transient response

  খ

  low stability

  গ

  poor gain

  ঘ

  high steady state error
• The quantity which make rotating amplifier applicable in large power levels is/are _________
  ক

  high power gain and favourable transient conditions

  খ

  favourable transient conditions

  গ

  high power gain

  ঘ

  favourable steady state conditions
• The rotating amplifiers are widely used in ____________
  ক

  small amplified outputs

  খ

  large amplified outputs

  গ

  amplified outputs

  ঘ

  large power gain outputs