| 1 |
The reactance is the ratio of |
- A. V<sub>rms</sub>/I<sub>rms</sub>
- B. V<sub>rms</sub> x I<sub>rms</sub>
- C. I<sub>rms</sub>/V<sub>rms</sub>
- D. V<sub>max</sub> x V<sub>rms</sub>
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| 2 |
A resistance frequency the impedance of RLC parallel circuit is. |
- A. Zero
- B. Infinite
- C. Maximum
- D. Minimum
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| 3 |
Power dissipation is a pure inductive or in a pure capacitance circuit is: |
- A. 10<sup>6</sup>
- B. 0
- C. 10<sup>∘</sup>
- D. Maximum
|
| 4 |
In LR circiut which one of the following statements is correct? |
- A. L and R opposes each other
- B. R value increases with frequency
- C. The inductive reactance increases with frequency
- D. The inductive reactance decreases with frequency
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| 5 |
The device which allows only the flow of D.C. is. |
- A. Capacitors
- B. transformer
- C. Inductor
- D. Generator
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| 6 |
In three phase A.C. generator the phase difference between each pair of coil is. |
- A. 45<sup>o</sup>
- B. 90<sup>o</sup>
- C. 120<sup>o</sup>
- D. 60<sup>o</sup>
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| 7 |
The mean value of A.C. in a cycle is. |
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| 8 |
In case of A.C. through resistor V and I are |
- A. At 0<sup> o</sup> with each other
- B. At 180 <sup>o</sup> with each other
- C. At 90<sup> o</sup> with each other
- D. At 270 <sup>o</sup> with each other
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| 9 |
At resonance frequency, the impedance of RLC series circuit is. |
- A. Maximum
- B. Minimum
- C. Zero
- D. Infinite
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| 10 |
The electromagnetic spectrum contains |
- A. Radio waves
- B. X-rays
- C. Microwaves
- D. All of these
|