If the illustrated device in figure "B" has...

Study

Question 1 of 2066636eed28f7522a1c51d68f

If the illustrated device in figure "B" has a step-up ratio of 10 to 1 what voltage would be measured at the secondary shortly after the primary of the device is connected to 110 volts DC and the primary current stabilized with a current of 12 amps? Illustration EL-0055

Back

Question 1 of 20

66636eed28f7522a1c51d68f

No comments yet

Be the first to share your thoughts!

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

🔍 Key Concepts

• Transformers require changing magnetic flux (AC or changing DC) to induce voltage in the secondary • What happens to the magnetic flux in the core when a DC voltage is first applied versus after the current has stabilized • Relationship of turns ratio to voltage ratio only when there is an induced voltage in the windings

💭 Think About

• Think about what causes voltage to appear in the secondary winding of the device shown in figure B: is it the presence of current, or the change in magnetic flux? • Compare the instant you first connect 110 volts DC to the primary with the condition "shortly after the primary current stabilized with a current of 12 amps". In which case is the magnetic field changing, and in which case is it steady? • Ask yourself: does the turns (step‑up) ratio alone guarantee a higher secondary voltage, or does it depend on the type of supply connected to the primary?

✅ Before You Answer

• Verify that a transformer’s secondary voltage is proportional to the rate of change of magnetic flux, not just the magnitude of current • Check what happens to induced voltage when the magnetic flux in the core becomes constant (steady DC) • Confirm whether the listed answer choices are consistent with the behavior of a transformer supplied by DC after current has stabilized

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

Quick actions

— No credit card needed