- 1(current)
Q. No.A light bulb is rated at \(100~\text W\) for a \(220~\text V\) AC supply. The peak voltage of the source is:
1. \(220~\text V\)
2. \(110~\text V\)
3. \(311~\text V\)
4. \(100~\text V\)
Subtopic: Â RMS & Average Values |
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Level 2: 60%+
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A light bulb is rated at \(100~\text{W}\) for a \(220~\text{V}\) AC supply. The RMS current through the bulb is:
1. \(0.243\) A
2. \(0.454\) A
3. \(0.222\) A
4. \(0.312\) A
Subtopic: Â RMS & Average Values |
 80%
Level 1: 80%+
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A pure inductor of \(25.0~\text{mH}\) is connected to an AC source of \(220~\text{V}.\) The RMS current in the circuit is:
(The frequency of the source is \(50~\text{Hz}\))
1. \(20~\text{A}\)
2. \(25~\text{A}\)
3. \(28~\text{A}\)
4. \(32~\text{A}\)
Subtopic: Â RMS & Average Values |
 75%
Level 2: 60%+
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Which one of the following is incorrect?
| 1. | For circuits used for transporting electric power, a low power factor implies large power loss in transmission. |
| 2. | Power factor can often be improved by the use of a capacitor of appropriate capacitance in the circuit. |
| 3. | For circuits used for transporting electric power, a low power factor implies low power loss in transmission. |
| 4. | Both (1) and (2) |
Subtopic: Â RMS & Average Values |
Level 3: 35%-60%
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- 1(current)
Q. No.
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