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IV. Procedures Wheatstone Bridge Circuit 1. Using the ohmmeter function of the DMM, measure the true value of the 5 low-rated resistors you 2. chose. List these values on Table 3.1 under Rx column. 3. Construct the Wheatstone bridge circuit shown in the figure below. Set R₁ = R₂ = 1k. Select one from the 5 low-rated resistors and set this as unknown resistor Rx. 4. 5. 6. Set the potentiometer as R3 and 12V DC power supply for the voltage source. Connect galvanometer between nodes A-B as the detector. By adjusting R3, obtain the balance of the bridge. The bridge is balanced when the galvanometer reading is 0 A. E 223 R3 R1 ww Rx R2 P2 h CamScanner ELECTRICAL ENGINEERING INSTRUMENTATION AND CONTROL 7. As an alternative to galvanometer, connect a DC voltmeter between nodes A-B as the deterior 8. By adjusting Rs, the bridge is balanced when the voltmeter reading is 0 V. 9. Measure the resistance of the adjusted potentiometer Ra. Note down the values on Table 3.1. 10. Calculate the unknown resistance Ry using the Wheatstone Bridge formula PR R₁ R 11. Compare the computed unknown resistance Ry to its true value. Then, calculate for the percentage error using the formula: % Error= Measured Value - True Value True Value x 100 12. Repeat steps 3 to 11 using the other values of Rx. Complete the table below. R₂ Rx R₁ R₂ (measured) (computed) Rx (true value) % Error 1 ΚΩ 1 ΚΩ Rx₁ 1 ΚΩ 1 ΚΩ Rx2 = 1 ΚΩ 1 ΚΩ Rx3 1 ΚΩ 1 ΚΩ R₁ = 1 ΚΩ 1 kQ Rxs = CS Scanned with CamScanner Table 3.1. Error Percentage Comparison

IV. Procedures Wheatstone Bridge Circuit 1. Using the ohmmeter function of the DMM, measure the true value of the 5 low-rated resistors you 2. chose. List these values on Table 3.1 under Rx column. 3. Construct the Wheatstone bridge circuit shown in the figure below. Set R₁ = R₂ = 1k. Select one from the 5 low-rated resistors and set this as unknown resistor Rx. 4. 5. 6. Set the potentiometer as R3 and 12V DC power supply for the voltage source. Connect galvanometer between nodes A-B as the detector. By adjusting R3, obtain the balance of the bridge. The bridge is balanced when the galvanometer reading is 0 A. E 223 R3 R1 ww Rx R2 P2 h CamScanner ELECTRICAL ENGINEERING INSTRUMENTATION AND CONTROL 7. As an alternative to galvanometer, connect a DC voltmeter between nodes A-B as the deterior 8. By adjusting Rs, the bridge is balanced when the voltmeter reading is 0 V. 9. Measure the resistance of the adjusted potentiometer Ra. Note down the values on Table 3.1. 10. Calculate the unknown resistance Ry using the Wheatstone Bridge formula PR R₁ R 11. Compare the computed unknown resistance Ry to its true value. Then, calculate for the percentage error using the formula: % Error= Measured Value - True Value True Value x 100 12. Repeat steps 3 to 11 using the other values of Rx. Complete the table below. R₂ Rx R₁ R₂ (measured) (computed) Rx (true value) % Error 1 ΚΩ 1 ΚΩ Rx₁ 1 ΚΩ 1 ΚΩ Rx2 = 1 ΚΩ 1 ΚΩ Rx3 1 ΚΩ 1 ΚΩ R₁ = 1 ΚΩ 1 kQ Rxs = CS Scanned with CamScanner Table 3.1. Error Percentage Comparison

Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter7: Parallel Circuits
Section: Chapter Questions
Problem 3PP: Using the rules for parallel circuits and Ohmslaw, solve for the missing values....
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IV. Procedures Wheatstone Bridge Circuit 1. Using the ohmmeter function of the DMM, measure the true value of the 5 low-rated resistors you 2. chose. List these values on Table 3.1 under Rx column. 3. Construct the Wheatstone bridge circuit shown in the figure below. Set R₁ = R₂ = 1k. Select one from the 5 low-rated resistors and set this as unknown resistor Rx. 4. 5. 6. Set the potentiometer as R3 and 12V DC power supply for the voltage source. Connect galvanometer between nodes A-B as the detector. By adjusting R3, obtain the balance of the bridge. The bridge is balanced when the galvanometer reading is 0 A. E 223 R3 R1 ww Rx R2 P2 h CamScanner
Transcribed Image Text:IV. Procedures Wheatstone Bridge Circuit 1. Using the ohmmeter function of the DMM, measure the true value of the 5 low-rated resistors you 2. chose. List these values on Table 3.1 under Rx column. 3. Construct the Wheatstone bridge circuit shown in the figure below. Set R₁ = R₂ = 1k. Select one from the 5 low-rated resistors and set this as unknown resistor Rx. 4. 5. 6. Set the potentiometer as R3 and 12V DC power supply for the voltage source. Connect galvanometer between nodes A-B as the detector. By adjusting R3, obtain the balance of the bridge. The bridge is balanced when the galvanometer reading is 0 A. E 223 R3 R1 ww Rx R2 P2 h CamScanner
ELECTRICAL ENGINEERING INSTRUMENTATION AND CONTROL 7. As an alternative to galvanometer, connect a DC voltmeter between nodes A-B as the deterior 8. By adjusting Rs, the bridge is balanced when the voltmeter reading is 0 V. 9. Measure the resistance of the adjusted potentiometer Ra. Note down the values on Table 3.1. 10. Calculate the unknown resistance Ry using the Wheatstone Bridge formula PR R₁ R 11. Compare the computed unknown resistance Ry to its true value. Then, calculate for the percentage error using the formula: % Error= Measured Value - True Value True Value x 100 12. Repeat steps 3 to 11 using the other values of Rx. Complete the table below. R₂ Rx R₁ R₂ (measured) (computed) Rx (true value) % Error 1 ΚΩ 1 ΚΩ Rx₁ 1 ΚΩ 1 ΚΩ Rx2 = 1 ΚΩ 1 ΚΩ Rx3 1 ΚΩ 1 ΚΩ R₁ = 1 ΚΩ 1 kQ Rxs = CS Scanned with CamScanner Table 3.1. Error Percentage Comparison
Transcribed Image Text:ELECTRICAL ENGINEERING INSTRUMENTATION AND CONTROL 7. As an alternative to galvanometer, connect a DC voltmeter between nodes A-B as the deterior 8. By adjusting Rs, the bridge is balanced when the voltmeter reading is 0 V. 9. Measure the resistance of the adjusted potentiometer Ra. Note down the values on Table 3.1. 10. Calculate the unknown resistance Ry using the Wheatstone Bridge formula PR R₁ R 11. Compare the computed unknown resistance Ry to its true value. Then, calculate for the percentage error using the formula: % Error= Measured Value - True Value True Value x 100 12. Repeat steps 3 to 11 using the other values of Rx. Complete the table below. R₂ Rx R₁ R₂ (measured) (computed) Rx (true value) % Error 1 ΚΩ 1 ΚΩ Rx₁ 1 ΚΩ 1 ΚΩ Rx2 = 1 ΚΩ 1 ΚΩ Rx3 1 ΚΩ 1 ΚΩ R₁ = 1 ΚΩ 1 kQ Rxs = CS Scanned with CamScanner Table 3.1. Error Percentage Comparison
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