5. The power drawn by a resistive coil made of copper wire is 220 W at 100 V and 20 °C. Calculatethe energy consumed by the coil at 115 V and 100 °C. The temperature coefficient of resistance at20 °C is 0.00393?

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Answered: 5. The power drawn by a resistive coil…

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter16: Installation Of Heating, Cooling, And Refrigeration Systems

Section: Chapter Questions

Problem 2RQ

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The power drawn by a resistive coil made of copper wire is 300 watts at 220 volts of 25 °C. Calculate the power consumed by the coil at 120 volts and 95 °C. The temperature coefficient is 0.00494.
2. A coil of copper wire has a resistance of 20 at 18°C. If the temperature coefficient of resistance of copper at 18°C is 0.004/°C, determine the resistance of the coil when the temperature rises to 98°C?
The copper coils of a generator have an equivalent resistance of 9.5 Ω at 20 °C. After being used for several hours, the resistance is found to be 12.2 Ω. Determine the temperature of the coils in °C.
A coil of copper wire has resistance of 90 Ω at 20°C and is connected to a 230- V supply. By how much must the voltage be increased in order to maintain the current constant if the temperature of the coil rises to 60°C ? Take the temperature coefficient of resistance of copper as 0.00428 from 0°C.
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1) This MCQ QUESTION FROM BASIC POWER ELECTRICAL ENGINEERING course. just write for me the the correct answer.
A coil of copper wire in a resistance of 90 Ω at 20o C and is connected to a 230 V supply. By how much must the voltage be increased in order to maintain the current constant if the temperature of the coil rises to 60C. Take the temperature coefficient of resistance of copper 0 0.00428/ oC A kilometer of wire having a diameter of 11.77 mm and a resistance of 0.031 Ω is drawn down so that its diameter is 5.0 mm. What does its resistance become?
39 Which term refers to the electric current that reverses its direction many times a second at regular intervals, typically used in power supplies? Select one: a. Alternating-Current b. Electron flow c. Direct-Current d. Conventional Current
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5. The power drawn by a resistive coil made of copper wire is 220 W at 100 V and 20 °C. Calculate the energy consumed by the coil at 115 V and 100 °C. The temperature coefficient of resistance at 20 °C is 0.00393?