155310
Among various circuits constructed with resistor $R$, inductor $L$ and capacitor $C$, the circuit that gives maximum power dissipation is
1 purely inductive circuit
2 purely capacitive circuit
3 purely resistive circuit
4 L-C series circuit
5 C-R series circuit
Explanation:
C We know that, Power dissipated in an AC circuit is given by - $\mathrm{P}=\mathrm{V}_{\mathrm{rms}} \mathrm{I}_{\mathrm{rms}} \cos \phi$ Where, $\phi=$ Phase difference between the current \& voltage. For maximum power dissipation value of $\cos \phi$ should be 1 . So, In purely resistive circuit, the voltage $\&$ current are in same phase so phase difference is zero. Therefore, $\cos \phi=1$
Kerala CEE 2021
Alternating Current
155315
Wattless current means-
1 Current is zero
2 The average power consumed in a cycle is zero
3 e.m.f. is zero
4 The phase difference between current and potential difference is zero
Explanation:
B Wattless current means the average power consumed in a cycle is zero such current is also called idle current. $\mathrm{P}_{\text {avg }} =\mathrm{E}_{\mathrm{rms}} \cdot \mathrm{I}_{\mathrm{rms}} \cos \frac{\pi}{2}$ $\mathrm{P}_{\mathrm{avg}} =0$ Hence, the average power consumed in a cycle is zero
CG PET-22.05.2022
Alternating Current
155337
The power factor of a good choke coil is
1 Nearly zero
2 Exactly zero
3 Nearly one
4 Exactly one
Explanation:
A Power factor $\cos \phi=\frac{\mathrm{R}}{\mathrm{Z}}$ In choke coil, $\phi=90^{\circ}$ So, $\quad \cos \phi \approx 0$ The power factor of a good choke coil is nearly zero. The choke coil is an extremely low resistance inductance coil used to reduce the current in AC circuit.
CG PET- 2006
Alternating Current
155360
In an $A C$ circuit with voltage $V$ and current $I$ the power dissipated is
1 Depends on the phase between V and I
2 $\frac{1}{\sqrt{2}} \mathrm{VI}$
3 $\frac{1}{2} \mathrm{VI}$
4 VI
Explanation:
A In case of ac circuit, $\mathrm{P}=\mathrm{VI} \cos \phi$ $\therefore \quad \mathrm{P} \propto \cos \phi$ Where, $\phi$ is the phase is angle between $\mathrm{V} \& \mathrm{I}$.
155310
Among various circuits constructed with resistor $R$, inductor $L$ and capacitor $C$, the circuit that gives maximum power dissipation is
1 purely inductive circuit
2 purely capacitive circuit
3 purely resistive circuit
4 L-C series circuit
5 C-R series circuit
Explanation:
C We know that, Power dissipated in an AC circuit is given by - $\mathrm{P}=\mathrm{V}_{\mathrm{rms}} \mathrm{I}_{\mathrm{rms}} \cos \phi$ Where, $\phi=$ Phase difference between the current \& voltage. For maximum power dissipation value of $\cos \phi$ should be 1 . So, In purely resistive circuit, the voltage $\&$ current are in same phase so phase difference is zero. Therefore, $\cos \phi=1$
Kerala CEE 2021
Alternating Current
155315
Wattless current means-
1 Current is zero
2 The average power consumed in a cycle is zero
3 e.m.f. is zero
4 The phase difference between current and potential difference is zero
Explanation:
B Wattless current means the average power consumed in a cycle is zero such current is also called idle current. $\mathrm{P}_{\text {avg }} =\mathrm{E}_{\mathrm{rms}} \cdot \mathrm{I}_{\mathrm{rms}} \cos \frac{\pi}{2}$ $\mathrm{P}_{\mathrm{avg}} =0$ Hence, the average power consumed in a cycle is zero
CG PET-22.05.2022
Alternating Current
155337
The power factor of a good choke coil is
1 Nearly zero
2 Exactly zero
3 Nearly one
4 Exactly one
Explanation:
A Power factor $\cos \phi=\frac{\mathrm{R}}{\mathrm{Z}}$ In choke coil, $\phi=90^{\circ}$ So, $\quad \cos \phi \approx 0$ The power factor of a good choke coil is nearly zero. The choke coil is an extremely low resistance inductance coil used to reduce the current in AC circuit.
CG PET- 2006
Alternating Current
155360
In an $A C$ circuit with voltage $V$ and current $I$ the power dissipated is
1 Depends on the phase between V and I
2 $\frac{1}{\sqrt{2}} \mathrm{VI}$
3 $\frac{1}{2} \mathrm{VI}$
4 VI
Explanation:
A In case of ac circuit, $\mathrm{P}=\mathrm{VI} \cos \phi$ $\therefore \quad \mathrm{P} \propto \cos \phi$ Where, $\phi$ is the phase is angle between $\mathrm{V} \& \mathrm{I}$.
155310
Among various circuits constructed with resistor $R$, inductor $L$ and capacitor $C$, the circuit that gives maximum power dissipation is
1 purely inductive circuit
2 purely capacitive circuit
3 purely resistive circuit
4 L-C series circuit
5 C-R series circuit
Explanation:
C We know that, Power dissipated in an AC circuit is given by - $\mathrm{P}=\mathrm{V}_{\mathrm{rms}} \mathrm{I}_{\mathrm{rms}} \cos \phi$ Where, $\phi=$ Phase difference between the current \& voltage. For maximum power dissipation value of $\cos \phi$ should be 1 . So, In purely resistive circuit, the voltage $\&$ current are in same phase so phase difference is zero. Therefore, $\cos \phi=1$
Kerala CEE 2021
Alternating Current
155315
Wattless current means-
1 Current is zero
2 The average power consumed in a cycle is zero
3 e.m.f. is zero
4 The phase difference between current and potential difference is zero
Explanation:
B Wattless current means the average power consumed in a cycle is zero such current is also called idle current. $\mathrm{P}_{\text {avg }} =\mathrm{E}_{\mathrm{rms}} \cdot \mathrm{I}_{\mathrm{rms}} \cos \frac{\pi}{2}$ $\mathrm{P}_{\mathrm{avg}} =0$ Hence, the average power consumed in a cycle is zero
CG PET-22.05.2022
Alternating Current
155337
The power factor of a good choke coil is
1 Nearly zero
2 Exactly zero
3 Nearly one
4 Exactly one
Explanation:
A Power factor $\cos \phi=\frac{\mathrm{R}}{\mathrm{Z}}$ In choke coil, $\phi=90^{\circ}$ So, $\quad \cos \phi \approx 0$ The power factor of a good choke coil is nearly zero. The choke coil is an extremely low resistance inductance coil used to reduce the current in AC circuit.
CG PET- 2006
Alternating Current
155360
In an $A C$ circuit with voltage $V$ and current $I$ the power dissipated is
1 Depends on the phase between V and I
2 $\frac{1}{\sqrt{2}} \mathrm{VI}$
3 $\frac{1}{2} \mathrm{VI}$
4 VI
Explanation:
A In case of ac circuit, $\mathrm{P}=\mathrm{VI} \cos \phi$ $\therefore \quad \mathrm{P} \propto \cos \phi$ Where, $\phi$ is the phase is angle between $\mathrm{V} \& \mathrm{I}$.
NEET Test Series from KOTA - 10 Papers In MS WORD
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Alternating Current
155310
Among various circuits constructed with resistor $R$, inductor $L$ and capacitor $C$, the circuit that gives maximum power dissipation is
1 purely inductive circuit
2 purely capacitive circuit
3 purely resistive circuit
4 L-C series circuit
5 C-R series circuit
Explanation:
C We know that, Power dissipated in an AC circuit is given by - $\mathrm{P}=\mathrm{V}_{\mathrm{rms}} \mathrm{I}_{\mathrm{rms}} \cos \phi$ Where, $\phi=$ Phase difference between the current \& voltage. For maximum power dissipation value of $\cos \phi$ should be 1 . So, In purely resistive circuit, the voltage $\&$ current are in same phase so phase difference is zero. Therefore, $\cos \phi=1$
Kerala CEE 2021
Alternating Current
155315
Wattless current means-
1 Current is zero
2 The average power consumed in a cycle is zero
3 e.m.f. is zero
4 The phase difference between current and potential difference is zero
Explanation:
B Wattless current means the average power consumed in a cycle is zero such current is also called idle current. $\mathrm{P}_{\text {avg }} =\mathrm{E}_{\mathrm{rms}} \cdot \mathrm{I}_{\mathrm{rms}} \cos \frac{\pi}{2}$ $\mathrm{P}_{\mathrm{avg}} =0$ Hence, the average power consumed in a cycle is zero
CG PET-22.05.2022
Alternating Current
155337
The power factor of a good choke coil is
1 Nearly zero
2 Exactly zero
3 Nearly one
4 Exactly one
Explanation:
A Power factor $\cos \phi=\frac{\mathrm{R}}{\mathrm{Z}}$ In choke coil, $\phi=90^{\circ}$ So, $\quad \cos \phi \approx 0$ The power factor of a good choke coil is nearly zero. The choke coil is an extremely low resistance inductance coil used to reduce the current in AC circuit.
CG PET- 2006
Alternating Current
155360
In an $A C$ circuit with voltage $V$ and current $I$ the power dissipated is
1 Depends on the phase between V and I
2 $\frac{1}{\sqrt{2}} \mathrm{VI}$
3 $\frac{1}{2} \mathrm{VI}$
4 VI
Explanation:
A In case of ac circuit, $\mathrm{P}=\mathrm{VI} \cos \phi$ $\therefore \quad \mathrm{P} \propto \cos \phi$ Where, $\phi$ is the phase is angle between $\mathrm{V} \& \mathrm{I}$.
