A. current is maximum
B. current is minimum
C. impedance is maximum
D. voltage across C is minimum
Related Mcqs:
- In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of__________?
A. R only
B. L only
C. C only
D. LorC
E. R,LorC - In a series resonant circuit, the impedance of the circuit is___________?
A. minimum
B. maximum
C. zero
D. none of the above - In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value__________?
A. will change the maximum value of current at resonance
B. will change the resonance frequency
C. will change the impedance at resonance frequency
D. will increase the selectivity of the circuit - Which of the following coil will have large resonant frequency __________?
A. A coil with large resistance
B. A coil with low resistance
C. A coil with large distributed capacitance
D. A coil with low distributed capacitance - If resistance is 20 Q. and inductance is 27 in a R-L series circuit, then time constant of this circuit will be________?
A. 0.001 s
B. 0.1 s
C. 10 s
D. 100 s - In a highly capacitive circuit the__________?
A. apparent power is equal to the actual power
B. reactive power is more than the apparent power
C. reactive power is more than the actual power
D. actual power is more than its reactive power - A sine wave has a frequency of 50 Hz. Its angular frequency is ________ radian/second.
A. 100 n
B. 50 jt
C. 25 JT
D. 5 n - The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 Q. If frequency is increased to 100 Hz, reactance becomes_______ohms?
A. 2.5
B. 5
C. 10
D. 15 - In a pure capacitive circuit if the supply frequency is reduced to 1/2, the current will__________?
A. be reduced by half
B. be doubled
C. be four times at high
D. be reduced to one fourth - In a pure inductive circuit if the supply frequency is reduced to 1/2, the current will__________?
A. be reduced by half
B. be doubled
C. be four times as high
D. be reduced to one fourth
