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Basic Electrical

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  • One unit is equal to _______ watt hour
    1000
  • Polyphase means _____ phase.
    Multi
  • A circuit beraker is a _______ device.
    Protection
  • RCCB means
    Residual Current Circuit Breaker
  • MCCB means_______
    Module Case Circuit Breaker
  • The property of a material which opposes free flow of electrons through it is called
    Resistance
  • The free flow of electrons through a conductor is called
    Current
  • ___ MFD capacitor is used in table fan.
    2.5
  • In 3Φ system, voltage between R phase and B phase is
    415 VAC
  • Unit of frequency is ______
    Hertz
  • A substance which cannot pass current through it under normal conditions is termed as an ____
    Insulator
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