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MODERN PUBLICATION-ALTERNATING CURRENT -CHAPTER PRACTICE TEST
- Write the relation between the rms value and peak value of AC.
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- Discuss the phase relationship between current and emf in an circuit c...
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- In a series LCR circuit, V(L) = V(C ) != V(R ). What is the value of p...
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- Why cannot a transformer be used to step up d.c. voltage ?
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- Why do we prefer a choke coil to a rhestat in controlling a.c.?
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- Why is electrical energy transmitted at high voltage from a distant po...
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- A step down transformer converts transmission line voltage from 2200 V...
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- The rms value of current in a 50 Hz AC source is 4 A. What will be the...
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- An electric heater is connected to DC and AC sources of equal voltage ...
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- Under which condition the current will lag behind the voltage? Explain...
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- When an ac source is connected to an ideal capacitor, show that the av...
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- Show that in the free oscillations of an LC circuit, the sum of energi...
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- Can the voltage drop across the inductor or capacitro in a series LCR ...
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- An alternating voltage given by V = 240 sin 314 t is connected across ...
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- What is power factor of an LCR circuit ? Explain on the basis of power...
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- (a) In a series LCR circuit connected across an AC source of varible f...
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