Question

11. (1 pt) A DC motor will be damaged if operated without a load. 12. (1 pt) Given an inductive AC circuit and the two meters, you can measure real power / apparent power (select one). 13. (2 pts) Calculate the current through each element of the given circuit. For full credit, add lines showing the direction and magnitude of the current. EGA 14. A small factory has a three-phase 60 Hz 208 Vases feeder. It has three significant machines described as: A) delta 99 per phase B) wye (9-16) S2 per phase C) delta (16972-45) 92 per phase A) (2 pts) Sketch the full schematic of the factory

Answer 1

A Series DC motor will be damaged if operated at no load.

Explanation is as below:-

flold Anmatinal oc series maton In a ec suis moton field winding e in suries with armature winding So cument through fuld coil (ta) and annature will be sand For oc motos Flux Ø - k la k is constant In annaten Curent terminal of If = Voltage across م اور پیٹ

we get - Eat In Chat R) Ear Ran Ra Back Fmf of Armentine Armature winding resistance Resistance of suces Pield محتهما Ea kadun con - Rotational spee - ocsules motan ka is constant solving it we get was - Centre) kakla Skake Here we canse speed is innsely proportional to It Cine at no load moton will take my less curnt from mains

DATE I since Cunnt will be low so spend will get my high Very high speed will darege