| 1 |
The basic circuit element in A.C. circuit which controls current. |
- A. Resistor only
- B. Capacitor only
- C. Inductor only
- D. All of these
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| 2 |
The combined effect of resistance and reactance is knows as. |
- A. Inductance
- B. Conductance
- C. Resistance
- D. Impedance
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| 3 |
In frequency modulation, the amplitude of carrier waves is |
- A. Increases
- B. Remains constant
- C. Decreases
- D. None of these
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| 4 |
At resonance, the behavior of R-L-C series circuit is. |
- A. Resistive
- B. Capacitive
- C. Inductive
- D. Modulative
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| 5 |
An alternating quantity (voltage or current) is completely known if we know its: |
- A. Maximum
- B. Frequency and phase
- C. Effective value
- D. Both (a) & (b)
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| 6 |
In a pure inductive A.C. circuit the current. |
- A. Lags behind voltage by 90 <sup>o</sup>
- B. Leads the voltage by 90 <sup>o</sup>
- C. In phase with voltage
- D. Leads the voltage by 270 <sup>o</sup>
|
| 7 |
The peak to peak value of alternating voltage is |
- A. 2V<sub>o</sub>
- B. V<sub>o</sub>
- C.
- D. None of these
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| 8 |
X<sub>1</sub>is low for low frequency Fy but Xc is. |
- A. Zero
- B. Low
- C. High
- D. Same is H
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| 9 |
The effective value of any sinusoidal alternating current or voltage is |
- A.
- B.
- C.
- D. None of the above
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| 10 |
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
|