Question

What is the disadvantage of Maxwell Bridge?

(a) Inductance cannot be measured over a wide range

(b) Measurement is not independent of frequency

(c) Number of components is large

(d) Inductance can be measured over a wide range

The question was posed to me in a national level competition.

My question is taken from Advanced Problems on Measurement of Inductance using AC Bridges in chapter Measurement of Inductance and Capacitance of Electrical Measurements

Answer 1

Correct option is (a) Inductance cannot be measured over a wide range

To explain: Maxwell Bridge cannot be used for the measurement of high Q values.

We have, Q = \(\frac{1}{ωR_X C_X} = \frac{ωL_X}{R_X}\)

Hence, Q ∝ LX

∴ Inductance cannot be measured over a wide range.