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A potentiometric displacement transducer with a uniform resistance per unit length of track has a resistance of 25 kN and track length of 140 mm and used with the output voltage being measured with an instrument of internal resistance 50 k as shown in Figure 1.1 below. The potentiometer is connected to a 48 V d.c. source of negligible internal resistance. V Juli B Vm ipl im Figure 1.1: Potentiometric Displacement Transducer If the output voltage is measured as 12 V, (Give all your answers correct to three (3) significant figures): (a) Determine the resistance of the potentiometer across node-A and node-B, RAB. [4] RAB= kiloohms (b) Determine the resistance of the potentiometer
(b) Determine the resistance of the potentiometer across node-B and node-C, RBC. [4] RBC= kiloohms (c) Determine the combined resistance of the potentiometer, RBc and Voltmeter, Rm. [2] RBCM= kiloOhms (d) How much current, im will be measured through the Voltmeter using ideal Ammeter? [2] im= mA (e) How much current, ip will be measured through the node-C using ideal Ammeter? [2] mA (f) How much current, is will be measured through the voltage source using ideal Ammeter? [2] mA (9) How much output voltage, Vm will be measured using ideal Voltmeter? [2] Vm= V (h) How much less or more is the measured voltage by the Voltmeter than the theoretical ra