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5-A direct current of one ampere is passed through a coil of 5000 turns and produces a flux of o.1mWb. Assuming that whole of this flux threads all the turns, the voltage developed across the coil would be- if the current were interrupted in 10-3 second. a-5000V b-50 V c-200 V d-500V 6-A 1000-turn coil is placed in a magnetic field that varies uniformly from 100 milli webers (mWb) to 20 mWb in 5 seconds (s). the induced emf in the coil is. a-16V b-20V c-30V d-26V 7- A transformer having 800 primary turns is connected to a 250-V a.c. supply. For a secondary voltage of 400 V, the number of secondary turns should be a- 1600 b-250 f- 400

5-A direct current of one ampere is passed through a coil of 5000 turns and produces a flux of o.1mWb. Assuming that whole of this flux threads all the turns, the voltage developed across the coil would be- if the current were interrupted in 10-3 second. a-5000V b-50 V c-200 V d-500V 6-A 1000-turn coil is placed in a magnetic field that varies uniformly from 100 milli webers (mWb) to 20 mWb in 5 seconds (s). the induced emf in the coil is. a-16V b-20V c-30V d-26V 7- A transformer having 800 primary turns is connected to a 250-V a.c. supply. For a secondary voltage of 400 V, the number of secondary turns should be a- 1600 b-250 f- 400

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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5- A direct current of one ampere is passed through a coil of 5000 turns and produces a flux of o.1mWb. Assuming that whole of this flux threads all the turns, the voltage developed across the coil would be-- if the current were interrupted in 10-3 second. a-5000V b-50 V с-200 V d-500V 6-A 1000-turn coil is placed in a magnetic field that varies uniformly from 100 milli webers (mWb) to 20 mWb in 5 seconds (s). the induced emf in the coil is. a-16V b-20V c-30V d-26V 7- A transformer having 800 primary turns is connected to a 250-V a.c. supply. For a secondary voltage of 400 V, the number of secondary turns should be a- 1600 b-250 c- 400 d- 1280 8- The equivalent resistance of the primary of a transformer having K 4 and RI 0.1 ohm when referred to secondary becomes..ohm. a-0.1 b-0.01 c-0.004 d- 1.6
Transcribed Image Text:5- A direct current of one ampere is passed through a coil of 5000 turns and produces a flux of o.1mWb. Assuming that whole of this flux threads all the turns, the voltage developed across the coil would be-- if the current were interrupted in 10-3 second. a-5000V b-50 V с-200 V d-500V 6-A 1000-turn coil is placed in a magnetic field that varies uniformly from 100 milli webers (mWb) to 20 mWb in 5 seconds (s). the induced emf in the coil is. a-16V b-20V c-30V d-26V 7- A transformer having 800 primary turns is connected to a 250-V a.c. supply. For a secondary voltage of 400 V, the number of secondary turns should be a- 1600 b-250 c- 400 d- 1280 8- The equivalent resistance of the primary of a transformer having K 4 and RI 0.1 ohm when referred to secondary becomes..ohm. a-0.1 b-0.01 c-0.004 d- 1.6
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