7B 1

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Across
  1. 3. The circuit breaker does not use pneumatic operating mechanism……………circuit breaker
  2. 4. Basic quantity measured in a distance relay is ….
  3. 5. Buchholz relay is used for the protection of …………
Down
  1. 1. Minimum faults occur in which of the power system equipment……………
  2. 2. The voltage across the circuit breaker pole after final current zero ……. ..voltage .