Question: A Wheatstone bridge is balanced with all the four resistances equal to 1 kW each. The bridge supply voltage is 100 V. The value of one of the resistance is changed to 1010 W. The output voltage is measured with a voltage measuring device of infinite resistance. The bridge sensitivity is
Answer:
MCQ: A Wheatstone bridge is balanced with all the four resistances equal to 1 kW each. The bridge supply voltage is 100 V. The value of one of the resistance is changed to 1010 W. The output voltage is measured with a voltage measuring device of infinite resistance. The bridge sensitivity is
Correct Answer:
A. 2.5 mV/W
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Related Questions
- 1. The main advantage of the null balance technique of measurement is that
- 2. The smallest change in a measured variable to which an instrument will respond is
- 3. The desirable static characteristics of a measurement are
- 4. The errors mainly caused by human mistakes are
- 5. Systematic errors are
- 6. An analog ammeter is
- 7. An 0 – 10 A ammeter has a guaranteed accuracy of 1 percent of full scale deflection. The limiting error while reading 2.5 A is :
- 8. A 0 -300 V Voltmeter has an error of ±2% of full scale deflection. What would be the range of reading if true voltage is 30 V?
- 9. A wattmeter has a full scale range of 2500 W. it has an error of ±1% of true value. What would be the range of reading if true power is 1250 W ?
- 10. Power in d.c circuit is measured by measuring the voltage across and current through the circuit.The voltage and current measurements are made to an accuracy of ±2% and ±3% respectively. The errors are limiting errors. The error in measurement of power is:
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