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1. A telegraph relay coil of 12 ohms operates on a voltage of 6.4 volts. Find the current drawn by the relay. 2. What is the power used by the soldering iron taking 3A at 110V? 3. A 12V battery is connected to a lamp that has a 100 resistance. How much power is delivered to the load? 1 110 V

1. A telegraph relay coil of 12 ohms operates on a voltage of 6.4 volts. Find the current drawn by the relay. 2. What is the power used by the soldering iron taking 3A at 110V? 3. A 12V battery is connected to a lamp that has a 100 resistance. How much power is delivered to the load? 1 110 V

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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1. A telegraph relay coil of 12 ohms operates on a voltage of 6.4 volts. Find the current drawn by the relay. 2. What is the power used by the soldering iron taking 3A at 110V? 3. A 12V battery is connected to a lamp that has a 100 resistance. How much power is delivered to the load? 4. An electric oven uses 35.5A at 118V. Find the wattage generated by the oven. 5. Find the power used by a 10ko resistor drawing 0.01A. 6. Find the current through a 40W lamp at 110 volts. 7. An electric drier requires 36oW and draws 3.25A. Find its operating voltage. 8. A motor delivers 2hp and receives 1.8 KW of energy. Find its efficiency. 9. A generator receives 7hp and supplies 20A at 220V.Find the power supplied by the generator and its efficiency. 10.A 4hp lathe motor runs 8hrs/day. Find the electric energy in kilowatt-hours used in a day. |
Transcribed Image Text:1. A telegraph relay coil of 12 ohms operates on a voltage of 6.4 volts. Find the current drawn by the relay. 2. What is the power used by the soldering iron taking 3A at 110V? 3. A 12V battery is connected to a lamp that has a 100 resistance. How much power is delivered to the load? 4. An electric oven uses 35.5A at 118V. Find the wattage generated by the oven. 5. Find the power used by a 10ko resistor drawing 0.01A. 6. Find the current through a 40W lamp at 110 volts. 7. An electric drier requires 36oW and draws 3.25A. Find its operating voltage. 8. A motor delivers 2hp and receives 1.8 KW of energy. Find its efficiency. 9. A generator receives 7hp and supplies 20A at 220V.Find the power supplied by the generator and its efficiency. 10.A 4hp lathe motor runs 8hrs/day. Find the electric energy in kilowatt-hours used in a day. |
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