Virtual Labs

A Wheatstone bridge has ratio arms of 1000 ohm and 100 ohm resistance, the standard resistance arms consists 4 decade resistance boxes of 1000,100, 10,1 ohm steps. The maximum and minimum values of unknown resistance which can be determined with this set up is

a: 1111Ω , 100Ω Explanation

Explanation

b: 11000Ω, 1Ω Explanation

Explanation

c: 11010Ω, 1000Ω Explanation

Explanation

d: 11110Ω, 10Ω Explanation

Explanation

The high resistances are found in

a: Resistance of armature windings of electrical machine Explanation

Explanation

b: Insulation resistance of cables and wires Explanation

Explanation

c: Resistance of shunt field winding and the multipliers Explanation

Explanation

d: resistance of series field winding of a DC machine Explanation

Explanation

Measurement Of High Resistance by Megohm Bridge method