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Draw the phasor diagram of a series LCR ...

Draw the phasor diagram of a series LCR connected across an ac source V=` V_(0) sin omegat`. Hence derive the expression for the impedance of the circuit . Obtain the conditions for the phase angle under which the current is (i) maximum and (ii) minimum.

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### Step-by-Step Solution **Step 1: Draw the Phasor Diagram** 1. **Identify the Components**: In a series LCR circuit, we have a resistor (R), an inductor (L), and a capacitor (C) connected in series to an AC source. 2. **Current Phasor**: Start by drawing the current phasor \( I \) along the horizontal axis. This phasor represents the current flowing through the circuit. ...
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MODERN PUBLICATION-ALTERNATING CURRENT -Revision Exercises Short Answer Questions
  1. Why is the use of AC voltage preferred over DC voltage ? Give two reas...

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  2. A voltage V = V(0)sinomegat is applied to a series LCR circuit. Derive...

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  3. Draw the phasor diagram of a series LCR connected across an ac source ...

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  4. (a) For a given a.c., i = i(m) sin wt, show that the average power dis...

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  5. (a) In a series LCR circuit connected across an AC source of varible f...

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  6. What is electric resonance ?

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  7. Write down the condition of resonance in series L-C-R circuit and henc...

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  8. An inductor L of inductance X(L) is connected in series with a bulb B ...

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  9. Answer the following questions : (a) In any a.c. circuit, is the app...

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  10. What is the power dissipation in an AC circuit in which voltage and cu...

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  11. Obtain anexpression for the average power of an a.c circuit .

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  12. What is wattless current ?

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  13. What is power factor of an LCR circuit ? Explain on the basis of power...

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  14. Given below are two electric circuits A and B. Calculate the rat...

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  15. Describe the principle and theory of a transformer . Why the efficienc...

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  16. With the help of a labelled diagram explain the working of a transform...

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  17. Electrical energy is transmitted over large distances at high alternat...

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  18. Why cannot a transformer be used to step up d.c. voltage ?

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  19. The core of a transformer is made of magnetic material of high permean...

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  20. State the principle of an ac generator.

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