07. Power in AC Circuit: the Power Factor
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AC (NCERT)

274669 In which of the following circuits the maximum power dissipation is observed?

1 Pure capacitive circuit
2 Pure resistive circuit
3 Pure inductive circuit
4 None of these
NCERT Page-252 / N-191
AC (NCERT)

274670 The power factor in a circuit connected to an A.C. The value of power factor is

1 unity when the circuit contains an ideal inductance only
2 unity when the circuit contains an ideal resistance only
3 zero when the circuit contains an ideal resistance only
4 unity when the circuit contains an ideal capacitance only
NCERT Page-252 / N-191
AC (NCERT)

274671 A sinusoidal voltage of peak value $283\text{V}$ and frequency $50\text{Hz}$ is applied to a series LCR circuit in which $\text{R}=3\text{ }\!\!\Omega\!\!\text{ }$, $\text{L}=25.48\text{mH}$, and $\text{C}=796\mu \text{F}$, then the power dissipated at the resonant condition will be-

1 $39.70\text{kW}$
2 $26.70\text{kW}$
3 $13.35\text{kW}$
4 Zero
NCERT Page-252/ N-191
AC (NCERT)

274672 The power factor of an $AC$ circuit having resistance (R) and inductance (L) connected in series and an
angular velocity $\omega $ is

1 $\text{R}/\omega \text{L}$
2 $\text{R}/\left( {{\text{R}}^{2}}{{\omega }^{2}}{{\text{L}}^{2}} \right)$
3 $\omega \text{L}/\text{R}$
4 $R/{{\left( {{R}^{2}}{{\omega }^{2}}{{L}^{2}} \right)}^{1/2}}$
NCERT Page-252/ N-191
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AC (NCERT)

274669 In which of the following circuits the maximum power dissipation is observed?

1 Pure capacitive circuit
2 Pure resistive circuit
3 Pure inductive circuit
4 None of these
NCERT Page-252 / N-191
AC (NCERT)

274670 The power factor in a circuit connected to an A.C. The value of power factor is

1 unity when the circuit contains an ideal inductance only
2 unity when the circuit contains an ideal resistance only
3 zero when the circuit contains an ideal resistance only
4 unity when the circuit contains an ideal capacitance only
NCERT Page-252 / N-191
AC (NCERT)

274671 A sinusoidal voltage of peak value $283\text{V}$ and frequency $50\text{Hz}$ is applied to a series LCR circuit in which $\text{R}=3\text{ }\!\!\Omega\!\!\text{ }$, $\text{L}=25.48\text{mH}$, and $\text{C}=796\mu \text{F}$, then the power dissipated at the resonant condition will be-

1 $39.70\text{kW}$
2 $26.70\text{kW}$
3 $13.35\text{kW}$
4 Zero
NCERT Page-252/ N-191
AC (NCERT)

274672 The power factor of an $AC$ circuit having resistance (R) and inductance (L) connected in series and an
angular velocity $\omega $ is

1 $\text{R}/\omega \text{L}$
2 $\text{R}/\left( {{\text{R}}^{2}}{{\omega }^{2}}{{\text{L}}^{2}} \right)$
3 $\omega \text{L}/\text{R}$
4 $R/{{\left( {{R}^{2}}{{\omega }^{2}}{{L}^{2}} \right)}^{1/2}}$
NCERT Page-252/ N-191
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AC (NCERT)

274669 In which of the following circuits the maximum power dissipation is observed?

1 Pure capacitive circuit
2 Pure resistive circuit
3 Pure inductive circuit
4 None of these
NCERT Page-252 / N-191
AC (NCERT)

274670 The power factor in a circuit connected to an A.C. The value of power factor is

1 unity when the circuit contains an ideal inductance only
2 unity when the circuit contains an ideal resistance only
3 zero when the circuit contains an ideal resistance only
4 unity when the circuit contains an ideal capacitance only
NCERT Page-252 / N-191
AC (NCERT)

274671 A sinusoidal voltage of peak value $283\text{V}$ and frequency $50\text{Hz}$ is applied to a series LCR circuit in which $\text{R}=3\text{ }\!\!\Omega\!\!\text{ }$, $\text{L}=25.48\text{mH}$, and $\text{C}=796\mu \text{F}$, then the power dissipated at the resonant condition will be-

1 $39.70\text{kW}$
2 $26.70\text{kW}$
3 $13.35\text{kW}$
4 Zero
NCERT Page-252/ N-191
AC (NCERT)

274672 The power factor of an $AC$ circuit having resistance (R) and inductance (L) connected in series and an
angular velocity $\omega $ is

1 $\text{R}/\omega \text{L}$
2 $\text{R}/\left( {{\text{R}}^{2}}{{\omega }^{2}}{{\text{L}}^{2}} \right)$
3 $\omega \text{L}/\text{R}$
4 $R/{{\left( {{R}^{2}}{{\omega }^{2}}{{L}^{2}} \right)}^{1/2}}$
NCERT Page-252/ N-191
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AC (NCERT)

274669 In which of the following circuits the maximum power dissipation is observed?

1 Pure capacitive circuit
2 Pure resistive circuit
3 Pure inductive circuit
4 None of these
NCERT Page-252 / N-191
AC (NCERT)

274670 The power factor in a circuit connected to an A.C. The value of power factor is

1 unity when the circuit contains an ideal inductance only
2 unity when the circuit contains an ideal resistance only
3 zero when the circuit contains an ideal resistance only
4 unity when the circuit contains an ideal capacitance only
NCERT Page-252 / N-191
AC (NCERT)

274671 A sinusoidal voltage of peak value $283\text{V}$ and frequency $50\text{Hz}$ is applied to a series LCR circuit in which $\text{R}=3\text{ }\!\!\Omega\!\!\text{ }$, $\text{L}=25.48\text{mH}$, and $\text{C}=796\mu \text{F}$, then the power dissipated at the resonant condition will be-

1 $39.70\text{kW}$
2 $26.70\text{kW}$
3 $13.35\text{kW}$
4 Zero
NCERT Page-252/ N-191
AC (NCERT)

274672 The power factor of an $AC$ circuit having resistance (R) and inductance (L) connected in series and an
angular velocity $\omega $ is

1 $\text{R}/\omega \text{L}$
2 $\text{R}/\left( {{\text{R}}^{2}}{{\omega }^{2}}{{\text{L}}^{2}} \right)$
3 $\omega \text{L}/\text{R}$
4 $R/{{\left( {{R}^{2}}{{\omega }^{2}}{{L}^{2}} \right)}^{1/2}}$
NCERT Page-252/ N-191
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