Question: In a kelvin’s double bridge two sets of readings are taken when measuring a low resistance, one with the current in one direction and the other with the direction of the current reversed. This is done to :
Answer:
MCQ: In a kelvin’s double bridge two sets of readings are taken when measuring a low resistance, one with the current in one direction and the other with the direction of the current reversed. This is done to :
Correct Answer:
A. Eliminate the effect of contact resistance
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Related Questions
- 1. High resistances are provided with a guard terminal.This guard terminal is used to :
- 2. When measuring insulation resistance of cables using d.c sources, the galvanometer used should be initially short circuited because .
- 3. A circular peice of specimen has a surface resistance R<sub>s.</sub> its diameter is d and the thickness is t. the surface resistivity ps of the specimen is given by :
- 4. The value of resistance of an earthing electrode depends upon :
- 5. From the point of view of safety, the resistance of earthing electrode should be :
- 6. The advantage of Varley loop tests over Murray loop tests is
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- 8. In a series-type ohmmeter
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