3. The ballast in some of the older fluorescent luminaires was said to have a low power factor. What device was added to the circuit to improve the power factor? Answer: 4. What effect does the power factor of a motor have on the branch circuit supplying power to the motor? Answer:

3. The ballast in some of the older fluorescent luminaires was said to have a low power factor. What device was added to the circuit to improve the power factor? Answer: 4. What effect does the power factor of a motor have on the branch circuit supplying power to the motor? Answer:

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter30: Swimming Pools, Spas, Hot Tubs, And Hydromassage Baths

Section: Chapter Questions

Problem 11R

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Concept explainers

Photoelectric

The photoelectric effect occurs when light (or similar incident radiation, including X-rays) falls on material together with a metal plate and causes it to emit electrons. The discovery of the photoelectric effect led to important new theories (and to a Nobel Prize for Albert Einstein). Photoelectric cells, or photocells, are utilized in burglar-alarm light detectors and garage-door openers (each employs a through-beam of light this is broken when something movements throughout it), and also to play soundtracks on film movies (in which a light beam shines through the soundtrack encoded at the film and is "read" with the aid of the photocells).

Question

3. The ballast in some of the older fluorescent luminaires was said to have a low power factor. What device was added to the circuit to
improve the power factor?
Answer:
4. What effect does the power factor of a motor have on the branch circuit supplying power to the motor?
Answer:

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