Synchronous motors are__________.

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SSC JE EE Previous Year Paper 5 (Held On: 24 Jan 2018 Evening)
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  1. Essentially self-starting
  2. not-self starting
  3. Self-starting
  4. None of these

Answer (Detailed Solution Below)

Option 2 : not-self starting
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Detailed Solution

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 Characteristics of synchronous motors:

  • Runs at constant speed at all loads
  • Used for power factor improvement
  • Inherently not self-starting
  • The speed of operation of is in synchronism with the supply frequency
  • It has the unique characteristics of operating under any electrical power factor
  • It is used where high power at low speed is required such as rolling mills, chippers, mixers, pumps, pumps, compressor etc.

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