Recent questions tagged ch7

A $100 \mu F$ capacitor in series with a $40 \Omega$ resistance is connected to a $110\;V,60Hz$ supply , What is the time lag between maximum and voltage maximum ?

asked Sep 15, 2016 by meena.p

1 answer

A $100 \mu F$ capacitor in series with a $40 \Omega$ resistance is connected to a $110\;V,60Hz$ supply , What is the maximum current in the circuit ?

asked Sep 15, 2016 by meena.p

1 answer

How does an inductor behave in a d.c circuit after the steady state ?

asked Sep 15, 2016 by meena.p

1 answer

A coil of inductance $0.50\;H$ and resistance $100 \Omega$ is connected to a $240\;v,50\;Hz$ a.c supply. If the circuit is connected to a high frequency supply (240 v, 10 kHz) then at very frequency , inductor is that circuit nearly amounts to open circuit. Is this statement true or false ?

asked Sep 15, 2016 by meena.p

1 answer

A coil of inductance $0.50\;H$ and resistance $100 \Omega$ is connected to a $240\;v,50\;Hz$ a.c supply What is the time lag between the voltage maximum and current maximum?

asked Sep 14, 2016 by meena.p

1 answer

A coil of inductance $0.50\;H$ and resistance is connected to a $240\;v,50\;Hz$ a.c supply What is the maximum current in the coil ?

asked Sep 14, 2016 by meena.p

1 answer

An LC circuit a $20\;mH$ inductor and a $50 \mu F$ capacitor with an initial charge of $10\;mc$ The resistance of the circuit is negligible. if a resistor is inserted in the circuit , how many energy is eventually dissipated as heat ?

asked Sep 14, 2016 by meena.p

1 answer

An LC circuit a $20\;mH$ inductor and a $50 \mu F$ capacitor with an initial charge of $10\;mc$ The resistance of the circuit is negligible. Let the instant the circuit is closed be $t=0$, At what time is the total energy should equally between the inductor and the capacitor?

asked Sep 14, 2016 by meena.p

1 answer

An LC circuit a $20\;mH$ inductor and a $50 \mu F$ capacitor with an initial charge of $10\;mc$ The resistance of the circuit is negligible. Let the instant the circuit is closed be $t=0$, At what time is the energy stored ? (i) Completely electrical? (ii) Completely magnetic ?

asked Sep 12, 2016 by meena.p

1 answer

An LC circuit a $20\;mH$ inductor and a $50 \mu F$ capacitor with an initial charge of $10\;mc$ The resistance of the circuit is negligible. Let the instant the circuit is closed be $t=0$, What is the natural frequency of the circuit ?

asked Sep 12, 2016 by meena.p

1 answer

An LC circuit a $20\;mH$ inductor and a $50 \mu F$ capacitor with an initial charge of $10\;mc$ The resistance of the circuit is negligible. Let the instant the circuit is closed be $t=0$, What is the total energy stored initially ? Is it conserved during the oscillations ?

asked Sep 12, 2016 by meena.p

1 answer

A series LCR circuit connected to a variable frequency $230\;v$ Source has $L= 5.0\;H,c=80 \mu F,R= 40 \Omega$ as shown in the figure. Determine the r.m.s potential drops across the three elements of the circuit . What is the potential drop across the LC combination at the resonating frequency .

asked Sep 12, 2016 by meena.p

1 answer

A series LCR circuit connected to a variable frequency $230\;v$ Source has $L= 5.0\;H,c=80 \mu F,R= 40 \Omega$ as shown in the figure. obtain the impedance of the circuit and amplitude of current at the resonating frequency.

asked Sep 12, 2016 by meena.p

1 answer

A series LCR circuit connected to a variable frequency $230\;v$ Source has $L= 5.0\;H,c=80 \mu F,R= 40 \Omega$ as shown in the figure

asked Sep 12, 2016 by meena.p

1 answer

A radio can tune over the frequency range of a portion of MW broadcast band (800 kHz to 1200 kHz) If its LC circuit has an effective inductance of $200\;\mu H$, What must be the range of its variable capacitor ?

asked Sep 9, 2016 by meena.p

1 answer

A series LCR circuit with $R= 20\; \Omega, L= 1.5\;H$ and $C= 35\;\mu F$ is connected to a variable frequency 200 v a.c supply. when the frequency of the supply equals the natural frequency of the circuit, what is the average power transferred to the circuit in one complete cycle ?

asked Sep 9, 2016 by meena.p

1 answer

A changed $30 \;\mu F$ capacitor is connected to a $27\;mH$ inductor. Suppose the initial charge on the capacitor is $6\;mc$ what is the total energy stored in the capacitor initially ? What is the total energy at later time ?

asked Sep 9, 2016 by meena.p

1 answer

A changed $30 \mu F$ capacitor is connected to a $27 mH$ inductor . What is the angular frequency of free oscillation of the circuit ?

asked Aug 23, 2016 by meena.p

1 answer

obtain the resonant frequency $(w_r)$ of a series LCR circuit with $L=2.0 \;H,c=32\;\mu F$ and $R= 100 hm$ What is the Q value of this circuit ?

asked Aug 23, 2016 by meena.p

1 answer

A $60 \mu F$ capacitor is connected to a $110\;v,60\;Hz$ a.c supply what is the net power absorbed by reach circuit over a completed cycle ? explain your answer

asked Aug 23, 2016 by meena.p

1 answer

A $44\;mH$ inductor is connected to $220\;v, 50Hz$a.c supply . What is the net power absorbed by each circuit over a complete cyde ? Explain your answer

asked Aug 23, 2016 by meena.p

1 answer

A $44\;mH$ inductor is connected to $220\;v,50\;Hz$ a.c supply . Determine the r.m.s value of current in the circuit .

asked Aug 23, 2016 by meena.p

1 answer

The rms value of current in the ac circuit is $10\;A$ What is the peak current ?

asked Aug 23, 2016 by meena.p

1 answer

The peak voltage at an ac supply is $300 \;v$ What is the rms voltage ?

asked Aug 23, 2016 by meena.p

1 answer

A $100 \Omega$ resistor is connected to a $220\;v,50\;Hz$ ac supply. What is the net power consumed over a full cycle ?

asked Aug 23, 2016 by meena.p

1 answer

A $100 \Omega$ resistor is connected to a $220 \;v, 50 Hz$ ac supply . What is the rms values of current in the circuit ?

asked Aug 23, 2016 by meena.p

1 answer

To divide a line segment $AB$ in the ration $s : t$ (s and t are positive integers with $s : t $$9\; s$ and t are positive integers with $s > t)$, draw a ray AX so that $ \angle BAX$ is an acute angle and then mark points on the ray $AX$ at equal distances such that the minimum number of these points is:

asked Aug 1, 2016 by meena.p

1 answer

To construct a triangle similar to given $\Delta ABC$ with its sides $\large\frac{7}{5}$ of the corresponding side of $\Delta ABC$ draw a ray $BX$ such that $\angle CBX$ is an acute angle and $X$ is on the opposite side of $A$ with respect to $BC$. Then, locate points $X_1,X_2,X_3…$ at equal distances on $BX$. The points to be joined in the next step are

asked Aug 1, 2016 by meena.p

1 answer

To divide a line segment $LM$ in the ratio $4 : 3$, a ray $LX$ is drawn firs such that $\angle MLX$ is an acute angle and then points $L_1, L_2, L_3, …$ are located at equal distances on the ray $LX$ and the points $M$ is joined to :

asked Aug 1, 2016 by meena.p

1 answer

To divide a line segment $AB$ in the ration $4 : 7$, a ray $AX$ is drawn first such that $\angle BAX$ is an acute angle and then points $A_1,A_2,A_3,…$ are located at equal distances on the ray $AX$ and the point $B$ is joined to :

asked Aug 1, 2016 by meena.p

1 answer

To divide a line segment AB in the ratio $p : q ( p, q$ are positive integers), draw a ray $AX$ so that $\angle BAX$ $s$ an acute angle and then mark points on ray $AX$ at equal distances such that the minimum number of these points is :

asked Aug 1, 2016 by meena.p

1 answer

A cylinder contains $0.03\; m^3$ of Argon gas at a temperature of $25^\circ C$ and a pressure of $1.2\; MPa$. Find the internal energy of the gas.

asked Jul 29, 2014 by balaji.thirumalai

1 answer