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Questions and Answers
What is the phase angle when power becomes half of its maximum value in an L-C-R circuit?
What is the phase angle when power becomes half of its maximum value in an L-C-R circuit?
- $90^\circ$
- $60^\circ$ (correct)
- $30^\circ$
- $45^\circ$
Which function represents the instantaneous value of alternating current or voltage in an L-R-C circuit?
Which function represents the instantaneous value of alternating current or voltage in an L-R-C circuit?
- $P_{av} = \frac{2V_0}{\pi}$
- $E = E_0 \sin(\omega t)$ (correct)
- $I = I_0 \sin(\omega t)$
- $V_{avg} = \frac{2V_0}{\pi}$
What is the equation for capacitive reactance, XC, in an L-C-R circuit?
What is the equation for capacitive reactance, XC, in an L-C-R circuit?
- $XC = \frac{1}{\omega C}$ (correct)
- $XC = \frac{1}{\omega R}$
- $XC = \frac{1}{\omega L}$
- $XC = \frac{1}{R}$
What is the equation for the impedance, Z, in an L-C-R circuit?
What is the equation for the impedance, Z, in an L-C-R circuit?
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What is the equation for the power, P, in an L-C-R circuit?
What is the equation for the power, P, in an L-C-R circuit?
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