Alternating Current questions
577 published questions with worked solutions.
- A 220 V, 50 Hz a.c. source is connected to an inductance of 0.2 Henry and a resistance of 20 ohms in series what is the current...
- A pure resistance and a pure inductance are connected in series with 100 volt a.c. supply. An a.c. voltmeter gives the same...
- A condenser of 10 and an inductor of 1 H are connected in series with an A.C. source of frequency 50 Hz. The impedance of the...
- When 100 V d.c. flows in a solenoid the current is 1.0 A when 100 V a.c. flows the current drops to 0.5 A if the frequency of...
- An inductive coil has a resistance of 100 . When an ac source of frequency 100 Hz is applied across the coil, the applied voltage...
- An ideal choke takes a current of 10 ampere when connected to an A.C. supply of 125 volt and 50 hertz. A pure resistor under the...
- In an LCR series circuit the current is
- At resonance, the source current is
- In series LCR circuit, the voltage across R, L and C applied a.c. source must be
- At resonance the peak value of current in a series LCR circuit is
- In a series LCR circuit, the voltage across the inductance and capacitance are not
- In an LCR series a.c. circuit, the current
- In a series LCR circuit, at resonance the
- In LCR circuit, the capacitance is changed from C to 4 C. For the same resonant frequency, the inductance should be changed from...
- In an A.C. circuit X_C=X_L. The phase difference between the current and voltage will be
- A resistor, a capacitor and inductor are connected in series with a source of a.c. Which of the following statement is true? The...
- In a LCR series circuit, if the phase difference between applied voltage and current is zero then
- The LCR series circuit resonance is called as
- In series resonant circuit, at resonance
- In series LCR circuit at resonance
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