In each of the three coils of a three phase generator, an alternating voltage having an r.m.s. value of 220 V is induced. Which of the following values is indicated by the voltmeters?
A. 220 V
B. $$200\sqrt 3 {\text{ V}}$$
C. $$\frac{{200}}{{\sqrt 3 }}{\text{ V}}$$
D. None of the above
Answer: Option A
This Question Belongs to Electrical Engineering >> A.C Fundamentals, Circuits And Circuit Theory
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Which of the following refers to a parallel circuit?
A. The current through each element is same
B. The voltage across element is in proportion to it's resistance value
C. The equivalent resistance is greater than any one of the resistors
D. The current through any one element is less than the source current
A. Apparent power is more than actual power
B. Reactive power is more than apparent power
C. Actual power is more than reactive power
D. Reactive power is more than actual power
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A. Changes in the stored energy in the inductors and capacitors
B. Impedance of the circuit
C. Applied voltage to the circuit
D. Resistance of the circuit
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A. Increasing core length
B. Decreasing the number of turns
C. Decreasing the diameter of the former
D. Choosing core material having high relative permeability
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