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When is tanφ positive?
  • a)
    When inductive reactance is greater than capacitive reactance
  • b)
    When inductive reactance is less than capacitive reactance
  • c)
    When inductive reactance is equal to capacitive reactance
  • d)
    When inductive reactance is zero
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
When is tanφ positive?a)When inductive reactance is greater than c...
 tanφ is positive when inductive reactance is greater than capacitive reactance because current will lag the voltage.
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When is tanφ positive?a)When inductive reactance is greater than c...
Tan0 depends on the value of Xl-Xc /R . if induftuve reactance is more tan0 is positive
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When is tanφ positive?a)When inductive reactance is greater than c...

Explanation:

Inductive reactance and capacitive reactance are components of impedance in an AC circuit. The phase angle φ represents the phase difference between voltage and current in the circuit.

When is tanφ positive:

a) When inductive reactance is greater than capacitive reactance:
- In this scenario, the impedance is dominated by inductive reactance since it is greater than capacitive reactance.
- The phase angle φ in this case is positive, indicating that the current leads the voltage in the circuit.
- Mathematically, tanφ = XL/XC, where XL is inductive reactance and XC is capacitive reactance. When XL > XC, tanφ is positive.

Importance of inductive reactance:
- Inductive reactance is directly proportional to the frequency of the AC signal and the inductance of the coil in the circuit.
- It opposes the flow of current in an AC circuit, creating a phase shift between voltage and current.

Conclusion:
- When inductive reactance is greater than capacitive reactance, the tangent of the phase angle is positive, indicating a phase shift where current leads voltage in the circuit. This condition is essential to understand the behavior of AC circuits and the relationship between inductance and capacitance.
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When is tanφ positive?a)When inductive reactance is greater than capacitive reactanceb)When inductive reactance is less than capacitive reactancec)When inductive reactance is equal to capacitive reactanced)When inductive reactance is zeroCorrect answer is option 'A'. Can you explain this answer?
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