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A Kelvin bridge as in Fig. 8-8 has the following component values át balance: P = 10 kN, R = 15 kM, Q = 0.1 N, B galvanometer has 1 µA/mm sensitivity and a 2 kN coil resistance (r). The dc supply (ER) is 50 V with a 10 Q source resistance (Rg). Determine the measured resistance of S, and the smallest change in S that can be detected. 100 2, and A = 150 2. The %3D %3D %3D

A Kelvin bridge as in Fig. 8-8 has the following component values át balance: P = 10 kN, R = 15 kM, Q = 0.1 N, B galvanometer has 1 µA/mm sensitivity and a 2 kN coil resistance (r). The dc supply (ER) is 50 V with a 10 Q source resistance (Rg). Determine the measured resistance of S, and the smallest change in S that can be detected. 100 2, and A = 150 2. The %3D %3D %3D

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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A Kelvin bridge as in Fig. 8-8 has the following component values at balance: P = 10 kN, R = 15 k2, Q = 0.1 N, B = 100 N, and A = 150 2. The galvanometer has 1 µA/mm sensitivity and a 2 kN coil resistance (r). The dc supply (Ep) is 50 V with a 10 Q source resistance (Rp). Determine the measured resistance of S, and the smallest change in S that can be detected. %3D %3D %3D %3D
Transcribed Image Text:A Kelvin bridge as in Fig. 8-8 has the following component values at balance: P = 10 kN, R = 15 k2, Q = 0.1 N, B = 100 N, and A = 150 2. The galvanometer has 1 µA/mm sensitivity and a 2 kN coil resistance (r). The dc supply (Ep) is 50 V with a 10 Q source resistance (Rp). Determine the measured resistance of S, and the smallest change in S that can be detected. %3D %3D %3D %3D
R Eg RB Figure 8-8 Kelvin bridge for very low resistance measurement. S is a standard four-termie resistor, Qis the resistor to be measured, and P, R, A, and B are precision resistors. When bridge is balanced, Q = S PIR.
Transcribed Image Text:R Eg RB Figure 8-8 Kelvin bridge for very low resistance measurement. S is a standard four-termie resistor, Qis the resistor to be measured, and P, R, A, and B are precision resistors. When bridge is balanced, Q = S PIR.
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