What will be the status of the two...

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Question 1 of 205eccefa4bacbc34ba4d481bb

What will be the status of the two synchronizing lamps as shown in circuit "C" of the illustration at the instant when the waves are in synchronism as shown in graph "A"? See illustration EL-0002.

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5eccefa4bacbc34ba4d481bb

What will be the status of the two synchronizing lamps as shown in circuit "C" of the illustration at the instant when the waves are in synchronism as shown in graph "A"? See illustration EL-0002.

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🔍 Key Concepts

• Synchronizing lamps (bright-dark method) and how lamp brightness depends on the voltage difference across the lamp • The way each lamp in circuit "C" is connected between the incoming generator leads and the bus (note the polarity marks) • What happens to the voltage between like vs. unlike polarities when the two AC sources are in exact synchronism (same voltage, frequency, and phase)

💭 Think About

• When the two sine waves are exactly in step as in graph "A", what is the instantaneous voltage difference between points that have the same polarity on the generator and on the bus? • Looking at the wiring in circuit "C", which lamp is effectively connected between like polarities and which between unlike polarities when the machines are in phase? • If a lamp has nearly zero volts across it, what will its brightness be? If it has maximum possible voltage across it at that moment, what will its brightness be?

✅ Before You Answer

• Trace carefully which terminals each lamp is connected to, using the polarity marks shown in circuit "C" • Decide, at the synchronism instant in graph "A", which lamp sees minimum (near zero) voltage and which sees maximum voltage across it • Match that condition to the choice that correctly describes one lamp dark and one lamp bright, paying attention to which lamp (left or right) is which

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Question 1 of 205eccefa4bacbc34ba4d481bb

What will be the status of the two synchronizing lamps as shown in circuit "C" of the illustration at the instant when the waves are in synchronism as shown in graph "A"? See illustration EL-0002.

Back

Question 1 of 20

5eccefa4bacbc34ba4d481bb

What will be the status of the two synchronizing lamps as shown in circuit "C" of the illustration at the instant when the waves are in synchronism as shown in graph "A"? See illustration EL-0002.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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