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anyone have problems other than just calculating illuminance or number of luminaires?

anyone have good material for non-linear problems? this is the only subject I feel week in and thought i might study a little deeper this week. any online material would be great.

the book definitely calculated the generator pu voltage wrong. Though I am getting two different answers when working different ways so I might need a little lesson! Give that the pu current is 0.059-0.01078j and the base is 240MVA. The generator Voltage line-line is 45kv and is the...

working on a problem which asks for the maximum output of a sync gen. given 3-phase, rated for 15kv, 10mva, 0.78pf lag, sync reactance of 14 ohms per-phase and internal voltage of 14.92 at an angle of 14 degrees. answer says max output occurs when torque angle (angle between internal voltage...

A practice problem I'm working on ask for the voltage across the series coil of an autotransformer being used as a step down. I have not heard of the coils being called series - only primary and secondary. do some call the coils this?

question reads: "what is the current for a 3-phase, delta-connected, 200kVA load with a power factor of 0.92 if the supplied voltage is 12.5k V? so I assumed the load is the total 3-phase load and the voltage is L-L. so the line current is I=200kva/sqrt(3)/12.5kV = 9.2A solutions say that all...

#17: according to GA tech manual and using alpha the rating would be 412MVA not just 700MVA/3. I'm I missing something? #20: why do you not divide the gen. internal voltage by sqrt(3)? #59: uses pu impedance to divide actual values. sorry if this is a crazy question though don't we need...

I'm having problems with the following areas and wondering if anyone has a simple reference for each: short circuit and open circuit testing of a transformer rules for paralleling transformers basics on two watt-meter questions also the non-linear questions are tough! Thanks