A voltemeter, ammeter, and waltmeter are connected with suitable instrument transformers into a single-phase circuit as per figure 1, the follwing data was taken: current transformer ratio 5 to 1, potential transformer ratio 20 to 1, voltmeter 100v, ammeter reading 5 A, wattmeter 360W: Find the voltage : a) 2,000v, b) 20,000v, c) 200,000v, d) none find current: a) 25A, b) 250A, c) 2,500A, d) none find volt-ampaeres: a) 500 VA, b) 5,000 VA, c) 50,000 V

A voltemeter, ammeter, and waltmeter are connected with suitable instrument transformers into a single-phase circuit as per figure 1, the follwing data was taken: current transformer ratio 5 to 1, potential transformer ratio 20 to 1, voltmeter 100v, ammeter reading 5 A, wattmeter 360W: Find the voltage : a) 2,000v, b) 20,000v, c) 200,000v, d) none find current: a) 25A, b) 250A, c) 2,500A, d) none find volt-ampaeres: a) 500 VA, b) 5,000 VA, c) 50,000 V

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter3: Magnetic Starters

Section: Chapter Questions

Problem 30SQ

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