Which transformer (from the below) is used in a servo stabilizer?

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ALP CBT 2 Electrician Previous Paper: Held on 22 Jan 2019 Shift 2
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  1. Step-up transformer
  2. Step-down transformer
  3. Multi-tap transformer
  4. Auto transformer

Answer (Detailed Solution Below)

Option 4 : Auto transformer
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  • A Servo Stabilizer is a Servo motor controlled stabilization system that performs optimum voltage supply using a Dimmer (Autotransformer), Buck\Boost transformer booster that captures voltage fluctuations from the input and regulates current to the correct output.
  • An AC synchronous motor adjusts voltage in a clockwise or anticlockwise direction and manages the output voltage with components like control card, dimmer, comparator, transistors, etc.
  • There are seven main components in a servo voltage stabilizer:-
    1. Dimmer (Variable Transformer)
    2. Carbon Brush
    3. Servomotor (Synchronizing Motors)
    4. Buck Boost Transformer (Series Transformer)
    5. Contactor or Relay
    6. MCB, MCCB
    7. Electronic Circuit
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