As shown in figure "A" of the illustrated...

Question 1 / 2066636eed28f7522a1c51dab2

Question 1 of 2066636eed28f7522a1c51dab2

As shown in figure "A" of the illustrated propulsion motor variable speed drive, what statement is true? Illustration EL-0140

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Question 1 of 20

66636eed28f7522a1c51dab2

As shown in figure "A" of the illustrated propulsion motor variable speed drive, what statement is true? Illustration EL-0140

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🔍 Key Concepts

• Look closely at the symbols used in the bridge rectifier section versus the controlled inverter bridge section. • Recall the difference between an uncontrolled rectifier (using diodes) and a controlled rectifier (using thyristors/SCRs). • Remember that modern variable frequency drives (VFDs) often use IGBTs (a type of transistor) on the inverter (output) side for switching.

💭 Think About

• In figure A, what semiconductor symbol is shown in the bridge rectifier block? Is it a diode, a transistor, or a thyristor? • In the controlled inverter bridge block, what device is explicitly labeled, and is that device a transistor or a thyristor? • Which part of the circuit actually needs rapid high‑frequency switching to create variable‑frequency AC for the motor?

✅ Before You Answer

• Verify whether the rectifier symbol has any gate/control connection (which would indicate a controlled device like a thyristor) or if it is just a simple diode bridge. • Confirm that the inverter section is labeled with IGBT, and recall whether an IGBT is classified as a transistor or a thyristor. • Eliminate any choice that claims a device type or control method that does not match the symbols and labels shown in the illustration.

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Question 1 of 20

As shown in figure "A" of the illustrated propulsion motor variable speed drive, what statement is true? Illustration EL-0140

both the bridge rectifier and the controller inverter bridge are transistor controlled in terms of switching

the bridge rectifier is uncontrolled and the controller inverter bridge is thyristor controlled in terms of switching

the bridge rectifier is uncontrolled and the controller inverter bridge is transistor controlled in terms of switching

both the bridge rectifier and the controller inverter bridge are thyristor controlled in terms of switching

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Question 1 / 2066636eed28f7522a1c51dab2

Question 1 of 2066636eed28f7522a1c51dab2

As shown in figure "A" of the illustrated propulsion motor variable speed drive, what statement is true? Illustration EL-0140

Back

Question 1 of 20

66636eed28f7522a1c51dab2

As shown in figure "A" of the illustrated propulsion motor variable speed drive, what statement is true? Illustration EL-0140

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

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

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