1.
The opposition offered by an AC circuit to the flow of current is called
2.
The SI unit of impedance is
3.
The inductive reactance is given by
4.
The capacitive reactance is
5.
The impedance of a pure resistor is
6.
In a series R-L circuit, the impedance is
7.
In an LCR series circuit at resonance,
9.
The impedance of a series LCR circuit at resonance is
10.
The power factor at resonance is
11.
The average power consumed in a pure resistor is
12.
Power factor is equal to
13.
Assertion (A): At resonance, a series LCR circuit behaves like a pure resistor. Reason (R): Inductive and capacitive reactances become equal.
14.
Assertion (A): Power consumed in a pure capacitor is zero. Reason (R): Current leads voltage by 90⁰.
15.
In a phasor diagram of a pure inductive circuit,
16.
Match the Columns: Q36. Column–I P. Pure Resistor Q. Pure Capacitor R. Pure Inductor S. Resonance Column–II 1. Current leads voltage 2. Current lags voltage 3. Current maximum 4. Voltage and current in phase Choose the correct matching.
17.
The quality factor (Q-factor) of a resonance circuit indicates
18.
A transformer works on
19.
In an ideal transformer, Vs/Vp equals to
20.
An ideal transformer has efficiency
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