How to calculate open rotor voltage?

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    Rotor Voltage
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To calculate the open rotor voltage in an induction motor, the AC power supply is connected to the stator while the rotor terminals remain open. A measured voltage of 102.6V was recorded, but the accuracy of this measurement is in question. The voltage can potentially be calculated using the specifications on the connector plate, which may indicate 120V per phase for the stator and 60V per phase for the rotor. Clarification is needed on the applied voltage and whether it was three-phase. Understanding these parameters is essential for accurate voltage calculation between the rotor terminals.
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Homework Statement


The AC power supply is connected to the stator terminals of the induction motor and the dynamometer. The rotor terminals are left open. The AC power supply is then turned on.
I need to find voltage between any two of the open rotor terminals.

Homework Equations

The Attempt at a Solution


I measured this as 102.6V but I'm not sure if I measured correctly. Is there a way for me to calculate it instead?
 

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There probably is. Have you done much electromagnetic induction before?
 
theone said:
The AC power supply is connected to the stator terminals of the induction motor and the dynamometer. The rotor terminals are left open. The AC power supply is then turned on.
I need to find voltage between any two of the open rotor terminals.

I measured this as 102.6V but I'm not sure if I measured correctly. Is there a way for me to calculate it instead?
The figures on the connector plate should be a clue to this. I'm having diffcuty reading it---does it show 120V per phase on the stator and 60V per phase on the rotor?

You applied what voltage, and was this 3ɸ?

Between what points did you measure the 102V?
 
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