Correct Answer  Option 1 : (A) only
Wheatstone is used for the measurement of a medium value range of resistance from 1 Ω to a few M Ω.
Type of Bridge

Name of Bridge/Method

Used to measure

Important

DC Bridges

Wheatstone bridge

Medium resistance

1Ω to
few MΩ

Corey foster’s bridge

Medium resistance

1Ω to
few MΩ

Kelvin double bridge

Very low resistance

Below 1Ω


Loss of charge method

High resistance

Above
MΩ


Megger

High insulation resistance

Resistance of cables

AC Bridges

Maxwell’s inductance bridge

Inductance

Not suitable to measure Q

Maxwell’s inductance capacitance bridge

Inductance

Suitable for medium Q coil (1 < Q < 10)

Hay’s bridge

Inductance

Suitable for high Q coil (Q > 10), slowest bridge

Anderson’s bridge

Inductance

5point bridge, accurate and fastest bridge (Q < 1)

Owen’s bridge

Inductance

Used for measuring low Q coils

Heaviside mutual inductance bridge

Mutual inductance


Campbell’s modification of Heaviside bridge

Mutual inductance


DeSauty’s bridge

Capacitance

Suitable for perfect capacitor

Schering bridge

Capacitance

Used to measure relative permittivity, dielectric loss

Wein’s bridge

Capacitance and frequency

Harmonic distortion analyzer, used as a notch filter, used in audio and highfrequency applications
