What is the functional purpose of component...

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Question 1 of 2066636eed28f7522a1c51d630

What is the functional purpose of component "5" as shown in figure "B" of the illustration? Illustration EL-0081

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66636eed28f7522a1c51d630

What is the functional purpose of component "5" as shown in figure "B" of the illustration? Illustration EL-0081

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🔍 Key Concepts

• Trace how current flows at startup versus normal running in the figure B circuit • Role of the ballast (inductor 3) in limiting current to the fluorescent tube • What the small device beneath the tube (component 5) typically does in a preheat fluorescent lamp circuit

💭 Think About

• Look at which components are in series with the tube filaments when the lamp is first switched on: what must happen before the arc can strike inside the tube? • After the lamp is lit and the arc is established, does component 5 still need to be active, or does another component take over current regulation? • Compare the function of component 6 (labeled PFC) with what component 5 is doing—are they likely to have the same purpose?

✅ Before You Answer

• Confirm which component in the diagram is explicitly labeled PFC (power factor correction)** and eliminate any option that duplicates that role for component 5 • Identify whether component 5 is normally closed then opens, or open then closes, and relate that behavior to starting vs running conditions • Decide whether component 5’s main job is heating filaments, regulating current, or correcting power factor, based on its position relative to the tube and ballast

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Question 1 of 2066636eed28f7522a1c51d630

What is the functional purpose of component "5" as shown in figure "B" of the illustration? Illustration EL-0081

Back

Question 1 of 20

66636eed28f7522a1c51d630

What is the functional purpose of component "5" as shown in figure "B" of the illustration? Illustration EL-0081

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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