274679
The instantaneous values of alternating current and voltages in a circuit are given as
$\begin{array}{*{35}{r}}
{} & i=\frac{1}{\sqrt{2}}\text{sin}\left( 100\pi t \right)A \\
{} & e=\frac{1}{\sqrt{2}}\text{sin}\left( 100\pi t+\pi /3 \right)\text{ }\!\!~\!\!\text{ Volt }\!\!~\!\!\text{ } \\
\end{array}$
The average power in Watt consumed in the circuit is
274680 Two coils A and B are connected in series across a $240\text{V}$, $50\text{Hz}$ supply. The resistance of $\text{A}$ is $5\text{ }\!\!\Omega\!\!\text{ }$ and the inductance of $B$ is $0.02\text{H}$. The power consumed is $3\text{kW}$ and the power factor is 0.75 . The impedance of the circuit is
274681 In an electrical circuit $R,L,C$ and an a.c. voltage source are all connected in series. When $L$ is removed from the circuit, the phase difference between the voltage the current in the circuit is $\pi /3$. If instead, $C$ is removed from the circuit, the phase difference is again $\pi /3$. The power factor of the circuit is
274679
The instantaneous values of alternating current and voltages in a circuit are given as
$\begin{array}{*{35}{r}}
{} & i=\frac{1}{\sqrt{2}}\text{sin}\left( 100\pi t \right)A \\
{} & e=\frac{1}{\sqrt{2}}\text{sin}\left( 100\pi t+\pi /3 \right)\text{ }\!\!~\!\!\text{ Volt }\!\!~\!\!\text{ } \\
\end{array}$
The average power in Watt consumed in the circuit is
274680 Two coils A and B are connected in series across a $240\text{V}$, $50\text{Hz}$ supply. The resistance of $\text{A}$ is $5\text{ }\!\!\Omega\!\!\text{ }$ and the inductance of $B$ is $0.02\text{H}$. The power consumed is $3\text{kW}$ and the power factor is 0.75 . The impedance of the circuit is
274681 In an electrical circuit $R,L,C$ and an a.c. voltage source are all connected in series. When $L$ is removed from the circuit, the phase difference between the voltage the current in the circuit is $\pi /3$. If instead, $C$ is removed from the circuit, the phase difference is again $\pi /3$. The power factor of the circuit is
274679
The instantaneous values of alternating current and voltages in a circuit are given as
$\begin{array}{*{35}{r}}
{} & i=\frac{1}{\sqrt{2}}\text{sin}\left( 100\pi t \right)A \\
{} & e=\frac{1}{\sqrt{2}}\text{sin}\left( 100\pi t+\pi /3 \right)\text{ }\!\!~\!\!\text{ Volt }\!\!~\!\!\text{ } \\
\end{array}$
The average power in Watt consumed in the circuit is
274680 Two coils A and B are connected in series across a $240\text{V}$, $50\text{Hz}$ supply. The resistance of $\text{A}$ is $5\text{ }\!\!\Omega\!\!\text{ }$ and the inductance of $B$ is $0.02\text{H}$. The power consumed is $3\text{kW}$ and the power factor is 0.75 . The impedance of the circuit is
274681 In an electrical circuit $R,L,C$ and an a.c. voltage source are all connected in series. When $L$ is removed from the circuit, the phase difference between the voltage the current in the circuit is $\pi /3$. If instead, $C$ is removed from the circuit, the phase difference is again $\pi /3$. The power factor of the circuit is
274679
The instantaneous values of alternating current and voltages in a circuit are given as
$\begin{array}{*{35}{r}}
{} & i=\frac{1}{\sqrt{2}}\text{sin}\left( 100\pi t \right)A \\
{} & e=\frac{1}{\sqrt{2}}\text{sin}\left( 100\pi t+\pi /3 \right)\text{ }\!\!~\!\!\text{ Volt }\!\!~\!\!\text{ } \\
\end{array}$
The average power in Watt consumed in the circuit is
274680 Two coils A and B are connected in series across a $240\text{V}$, $50\text{Hz}$ supply. The resistance of $\text{A}$ is $5\text{ }\!\!\Omega\!\!\text{ }$ and the inductance of $B$ is $0.02\text{H}$. The power consumed is $3\text{kW}$ and the power factor is 0.75 . The impedance of the circuit is
274681 In an electrical circuit $R,L,C$ and an a.c. voltage source are all connected in series. When $L$ is removed from the circuit, the phase difference between the voltage the current in the circuit is $\pi /3$. If instead, $C$ is removed from the circuit, the phase difference is again $\pi /3$. The power factor of the circuit is