Question: Potentiometers, when used for measurement of unknown resistances, give more accurate results as compared to the voltmeter–ammeter method because
Answer:
MCQ: Potentiometers, when used for measurement of unknown resistances, give more accurate results as compared to the voltmeter–ammeter method because
Correct Answer:
A. there is no error due to thermo-electric effect in potentiometers
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Related Questions
- 1. Null detection method’ is more accurate than ‘deflection method’ for measurement of unknown resistances because
- 2. Guard terminals are recommended for high resistance measurements to
- 3. When measuring cable insulation using a dc source, the galvanometer used is initially short circuited to
- 4. The loss of charge method is used for measurement of
- 5. A meggar is used for measurement of
- 6. Controlling torque in a meggar is provided by
- 7. The advantage of Varley loop test over Murray loop test for cable fault localisation is
- 8. Possible sources of error in using loop test for cable fault localisation are
- 9. A potentiometer is basically a :
- 10. When a potentiometer is used for measurement of voltage of an unknown source , the power consumed in the circuit of the unknown source under null conditions
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