(a)
The phasor diagram if the capacitance is
(a)
Answer to Problem 66PQ
The phasor diagram of the circuit is shown below.
Explanation of Solution
Write the expression for the impedance.
Here,
Write the expression to calculate the inductive reactance.
Here,
Write the expression for the capacitive reactance.
Here,
Substitute the
Write the expression for maximum current in the circuit.
Here,
Write the expression for phase angle.
Conclusion:
Substitute
Substitute
Substitute
The phase angle is
The inductive reactance is less than the capacitive reactance. Hence, the phasor angle is negative.
The phasor diagram of the circuit is shown below.
Figure (1)
(b)
The phasor diagram if the capacitance is
(b)
Answer to Problem 66PQ
The phasor diagram of the circuit is shown below.
Explanation of Solution
Write the expression for the impedance.
Here,
Write the expression to calculate the inductive reactance.
Here,
Write the expression for the capacitive reactance.
Here,
Substitute the
Write the expression for maximum current in the circuit.
Here,
Write the expression for phase angle.
Conclusion:
Substitute
Substitute
Substitute
The phase angle is
The inductive reactance is less than the capacitive reactance. Hence, the phasor angle is negative.
The phasor diagram of the circuit is shown below.
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