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NEW JOYTHI PUBLICATION-ALTERNATING CURRENT -EVALUATION QUESTIONS AND ANSWERS
- What is the average value of emf or current in one cycle?
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- What is the average value of emf or current in one cycle?
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- Even though the average current in the circuit is zero, how does an el...
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- When ac is passing through a resistor, what is the instantaneous power...
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- For one complete cycle, what is the average power?
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- What is the maximum ac voltage in our household circuit?
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- Impendence of a circuit may also be calculated using impendence triang...
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- The current-frequency response curves are shown in figures above for t...
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- What is the frequency of direct current?
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- i= 5 sin 314t. Which is the peak value of current?
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- Which value of current do you measure with an A.C ammeter?
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- A capacitor blocks D.C, but allows A.C to pass through it. Explain why...
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- A transformer cannot work on D.C. Why?
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- What is the function of a choke coil in a fluorescent tube?
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- Draw the graph showing the variation of reactance of (a) C and (b) L w...
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- Which is more dangerous, A.C or D.C? Why?
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