# Recent questions in Electric Machines

No documents found, press Enter to search

# A parallel excitation DC generator

A parallel excitation DC generator has an excitation field resistance of 50ohm. When the generator serves a 3kw load at 110volt, the internal induced voltage is 160volt. If the load is reduced to 1/4 from before, with a generator output voltage of 120 volts, find the value of the inductor drum resistance(Ra) and EaChoose the correct answer1. A. 4.78 ohm B. 1.02 ohm C. 1.3 ohm D. 1.72 ohm E. 2.53 ohm2. A. 137.12 volt B. 134.67 volt C. 133.92 volt D. 134.17 volt E. 134.89 volt
4
almost 5 years ago

# THE SQUIRREL - CAGE INDUCTION MOTOR

1. The relation between “_Nrotor(r/min)” and each of “Ns(r/min)”, “_UNominal(V)”, “_I(A)”, “T(N.m)”, “Q(VAR)”.2. The relation between “P(W)” and the mechanical loads.3. The starting current “IS(A)” and the nominal current “IN(A)”.4. The motor rotation directions.5. Real applications for the “Squirrel-Cage_” induction motor.6. Your proper deductions and remarks.
0
almost 5 years ago

# Motor ac or dc is better

What is the difference between ac and dc motor?
2
Solved