In a series L-C circuit at the resonant frequency the__________?
A. current is maximum
B. current is minimum
C. impedance is maximum
D. voltage across C is minimum
A. current is maximum
B. current is minimum
C. impedance is maximum
D. voltage across C is minimum
A. capacitance is less and frequency of supply is less
B. capacitance is less and frequency of supply is more
C. capacitance is more and frequency of supply is less
D. capacitance is more and frequency of supply is more
A. 90
B. 60
C. 45
D. 30
A. to reduce line losses
B. to maximise the utilization of the capacities of generators, lines and transformers
C. to reduce voltage regulation of the line
D. due to all above reasons
A. purely inductive circuit
B. R-L circuit
C. R-C circuit
D. R-L-C circuit
A. only at the time of turning off
B. only at the time of turning on
C. at the time of turning on and off
D. at all the time of operation
A. actual power is zero
B. reactive power is zero
C. apparent power is zero
D. none of above is zero