Questions
Power factor of a series circuit is 0.8. When a capacitor is connected in series with R and L, the power factor increases to unity. Then reactance of the capacitor is
detailed solution
Correct option is A
RR2+XL2=0.8⇒XL=3R4Again, RR2+(XL−XC)2=1⇒XC=XLTalk to our academic expert!
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A virtual current of 4A and 50 Hz flows in an ac circuit containing a coil. The power consumed in the coil is 240 W. If the virtual voltage across the coil is 100 V its inductance will be
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