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Unformatted text preview: readinss: (a) 100 v, (b) 5V, and (c) 100mV figure P3.33 t ) 3 , n 20 mA a l 1 A t2f} 3.34 Suppose tlle d'Arsonval voltmeter described in Problem 3.33 is used to measure the voltage aqoss the 24 O resistor in Fig. P3.32. a) What wil tle voltmeter read? b) Using lhe definilion of the percentage oferror in a meter reading found ir Problem 3.31, what is the percentage of eror in tle voltmeter rcading? A shunt resistor and a 50 mV, 1 mA d'Arsonval movement are used to build a 10 A ammeter. A resistance of 0.015 O is placed across the terminals of tle ammeter. Wlat is the new full-scale range of the ammeter? (25/n) a The ammeter in the circuit in Fig. P3.31 has a resist-ance of 0.5 O. What is the percentage of error in the reading of this ammeter if ^. / measwed value "\ _^^-,/o error: I ___________ .r | \ IUU/ \ rrue varue / 60f) 3.31...
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- Spring '07