The torque developed by a dc series motor is 12 N-m when drawing 23 A. If the current is doubled, the torque developed becomes. N-m.

Here it is the equivalent circuit of and induction motor and it is per phase circuit my question is name for me the variable for example R1 is the winding resistance and so an the all variable and please show me a pic of the real machine with the variable for example for R1 happens because of the winding i need to see the winding in the real machine, please help me to understand well

The frequency of rotor current in an induction motor is       slip times the frequency of stator current.       slip times the frequency of supply,     One by slip times the frequency of stator current.       One by slip times the frequency of supply

In a three-phase induction motor the maximum torque occurs at 20% slip and the equivalent resistance of the secondary is 0.04Ω per phase. Find the equivalent load resistance and the load voltage and the load current. Output power is 20 kW.