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De Sauty's bridge in its simple form compares

  • A.the frequency of the supply against a network of resistances and capacitances
  • B.two capacitances against a resistance ratio
  • C.a capacitance against a standard inductance placed in the opposite arm of the bridge
  • D.the dissipation factor of a capacitor against that of a loss-free standard

Answer: B

Two arms hold the unknown and standard capacitors and the other two are resistances, so the ratio of the capacitances comes out as the inverse ratio of the resistances. It is the simplest of the alternating bridges and the direct analogue of the Wheatstone form.

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