## What is locus diagram?

Locus diagram, in context of AC circuits, is the locus traced out by tip of current/voltage phasor or complex impedance/admittance vector when subjected to variation in circuit parameters R/L/C and source frequency. Hence, four types of locus diagrams can be developed: current locus diagram (V phasor as refrence)

**How do you calculate Z in an RL circuit?**

Impedance of Series RL Circuit The impedance Z in ohms is given by, Z = (R2 + XL2)0.5 and from right angle triangle, phase angle θ = tan– 1(XL/R).

### What is the locus of a phasor?

Correct Option: C. The locus of the tip of the voltage phasor across R in a series R-L-C circuit will be a circle.

**When power factor angle is varying the shape of the current locus is?**

straight line

The path traced by the terminus of the current vector by varying either any one of the circuit element or by varying source frequency is called as current locus. When the power factor angle constant the shape of the locus is straight line.

## How do you find the impedance of a LR circuit?

Where the inductor is denoted by L an the resistance is denoted by R . This type of combined circuit is applicable for AC currents and the combined effect of these two values is known as impedance and denoted by “Z” and the value for LR circuit is √(R2 +ω2 L2).

**What is XL in RL circuit?**

When R is 10 times greater than XL the circuit is inductive because most of the current is flowing through the less resistive coil and into the main line. When XL is 10 times greater than R, the circuit is resistive because most of the current is flowing through the resistor.

### What is the impedance of a circuit?

electrical impedance, measure of the total opposition that a circuit or a part of a circuit presents to electric current. Impedance includes both resistance and reactance (qq. v.). The resistance component arises from collisions of the current-carrying charged particles with the internal structure of the conductor.

**What is series resonant circuit?**

Series resonance is a resonance condition that usually occurs in series circuits, where the current becomes a maximum for a particular voltage. In series resonance, the current is maximum at resonant frequency. The series resonance current curve increases to a maximum at resonance then decreases as resonance is passed.