Advertisements
Advertisements
प्रश्न
When does power factor of a series RLC circuit become maximum?
उत्तर
- Cos Φ is the power factor
- An RLC series circuit, the phase difference between voltage and current is zero when the circuit is at resonance.
- The power factor becomes maximum.
APPEARS IN
संबंधित प्रश्न
Define electric resonance.
How will you define Q-factor?
Derive an expression for phase angle between the applied voltage and current in a series RLC circuit.
Define capacitive reactance. Give its units.
Obtain an expression for average power of AC over a cycle. Discuss its special cases.
A choke coil in series with a lamp is connected to a dc line. The lamp is seen to shine brightly. Insertion of an iron core in the choke causes no change in the lamp’s brightness. Predict the corresponding observations if the connection is to an ac line.
The capacitive reactance in an A.C. circuit is ______.
The phase relationship between current and voltage in a pure resistive circuit is best represented by ______.
A series CR circuit with R = 200 Ω and C = (50/π) µF is connected across an ac source of peak voltage ε0 = 100 V and frequency v = 50 Hz. Calculate (a) impedance of the circuit (Z), (b) phase angle (Φ), and (c) voltage across the resistor.
