Question 425Electricity/Electronics - QMED70% to pass
If coil 'R1-R2-R3' on the transmitter in figure "C" shown in the illustration is turned 30 degrees clockwise, how will the corresponding coils 'R1-R2-R3' on the receivers (indicators) respond? Illustration EL-0092

AI Explanation
The correct answer is A) torque will cause them to align to the same position.
When the coil 'R1-R2-R3' on the transmitter is turned 30 degrees clockwise, it will create a magnetic field that will induce a corresponding change in the coils 'R1-R2-R3' on the receivers (indicators). Due to the principle of electromagnetic induction, the receiving coils will experience a torque that will cause them to align to the same 30-degree clockwise position as the transmitter coil.
The other options are incorrect because: B) the voltage change would depend on the turns ratio, not the coil position; C) the coils would not ring, they would simply align; and D) the voltage change would depend on the turns ratio, not the coil position.
Related Questions
#423 How can the loss of residual magnetism in an alternator or generator be corrected? #424 An open occurring within the field rheostat of an AC generator can be detected by short circuiting its terminals and making specific observations. What should be checked for? #426 In actual applications, electrical connections associated with 'R1, R2 and R3' of the transmitter to 'R1, R2, and R3' of the indicators shown in figure "C" of the illustration are made by what means? Illustration EL-0092 #427 In the circuit 'B' of the illustration, what would be the result of the upper heating element being burned out and open circuited? Illustration EL-0041 #428 For more complete vessel protection when using an impressed current cathodic system, what other features are built into the system?