If it is required that the coils 'R1-R2-R3'...

Question 1 / 2066636eed28f7522a1c51da01

Question 1 of 2066636eed28f7522a1c51da01

If it is required that the coils 'R1-R2-R3' in the indicator of figure "A", turn opposite to those in the transmitter, as shown in the illustration, what action should be taken? Illustration EL-0092

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Question 1 of 20

66636eed28f7522a1c51da01

If it is required that the coils 'R1-R2-R3' in the indicator of figure "A", turn opposite to those in the transmitter, as shown in the illustration, what action should be taken? Illustration EL-0092

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🔍 Key Concepts

• Relationship between transmitter and indicator coils R1-R2-R3 in a synchro (selsyn) rudder angle system • Effect of swapping any two leads in a three-coil (3‑phase-like) stator circuit on the direction of the rotating magnetic field • Difference between changing R1-R2-R3 connections and reversing the S1-S2 rotor (60 Hz supply) connections

💭 Think About

• Think about which part of the system actually creates the rotating magnetic field that the indicator follows: the three stator coils (R1-R2-R3) or the rotor supply (S1-S2)? • In a three-phase-style winding, what happens to the phase sequence when you interchange two of the three stator leads compared with reversing the two rotor leads? • Which action will cause the indicator shaft to rotate in the opposite direction for the same transmitter motion, without changing the zero (midships) reference more than necessary?

✅ Before You Answer

• Identify whether the stator phase sequence (R1-R2-R3) must be reversed, or the rotor excitation (S1-S2) must be reversed to change rotation direction. • Verify on the diagram which leads are common between transmitter and indicator, and how many leads you are allowed to interchange without breaking the synchro relationship. • Confirm that the chosen option actually reverses the direction of indication rather than merely shifting the reading by a constant angle.

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Question 1 of 20

If it is required that the coils 'R1-R2-R3' in the indicator of figure "A", turn opposite to those in the transmitter, as shown in the illustration, what action should be taken? Illustration EL-0092

Interchange leads 'R1' and 'R3'.

Interchange leads 'R2' and 'R3'.

Reverse the 60 Hz supply connections to 'S1' and 'S2'.

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Question 1 / 2066636eed28f7522a1c51da01

Question 1 of 2066636eed28f7522a1c51da01

If it is required that the coils 'R1-R2-R3' in the indicator of figure "A", turn opposite to those in the transmitter, as shown in the illustration, what action should be taken? Illustration EL-0092

Back

Question 1 of 20

66636eed28f7522a1c51da01

If it is required that the coils 'R1-R2-R3' in the indicator of figure "A", turn opposite to those in the transmitter, as shown in the illustration, what action should be taken? Illustration EL-0092

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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