Transformer Losses MCQ

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

• A shell-type transformer has __________
  ক

  High eddy current losses

  খ

  Reduced magnetic leakage

  গ

  Negligible hysteresis losses

  ঘ

  Cannot be determined
• Which of the following loss in a transformer is zero even at full load?
  ক

  Core loss

  খ

  Friction loss

  গ

  Eddy current loss

  ঘ

  Hysteresis loss
• In a given transformer for a given applied voltage, which losses remain constant irrespective of load changes?
  ক

  Hysteresis and eddy current losses

  খ

  Friction and windage losses

  গ

  Copper losses

  ঘ

  Cannot be determined
• Losses which occur in rotating electric machines and do not occur in transformer are ______
  ক

  Friction and windage losses

  খ

  Magnetic losses

  গ

  Hysteresis and eddy current losses

  ঘ

  Copper losses
• How reduction in core losses and increase in permeability can be obtained simultaneously in a transformer?
  ক

  Core built-up of laminations of cold rolled grain oriented steel

  খ

  Core built-up of laminations of hot rolled sheet

  গ

  Cannot be determined

  ঘ

  Frequency Meter
• Which of the following can measure iron loss of a transformer?
  ক

  Low power factor wattmeter

  খ

  Unity power factor wattmeter

  গ

  Frequency meter

  ঘ

  Any type of wattmeter
• If the supply frequency to the transformer is increased, the iron loss will ___________
  ক

  Not change

  খ

  Decrease

  গ

  Increase

  ঘ

  Cannot be determined
• Silicon steel used in laminations, because it reduces ________________
  ক

  Hysteresis loss

  খ

  Eddy current losses

  গ

  Copper losses

  ঘ

  Cannot be determined
• Leakage flux in the transformer depends on _____________________
  ক

  Load current

  খ

  Load current and voltage

  গ

  Load current, voltage and frequency

  ঘ

  Load current, voltage, frequency and power factor
• Variations in a hysteresis loss in a transformer (Bmax = maximum flux density) ____________
  ক

  Bmax

  খ

  Bmax1.6

  গ

  Bmax3.83

  ঘ

  Bmax/2
• On which of the following degree of mechanical vibrations produced by the laminations of a transformer depends?
  ক

  Tightness of clamping

  খ

  Gauge of laminations

  গ

  Size of laminations

  ঘ

  Tightness of clamping, gauge and size of laminations
• In a given transformer for given applied voltage, which of the following losses remain constant irrespective of load changes?
  ক

  Friction and windage losses

  খ

  Copper losses

  গ

  Hysteresis and eddy current losses

  ঘ

  Cannot be determined