| 1 |
In frequency modulation which factor changed. |
- A. Amplitude of charge carriers
- B. Frequency of charge carriers
- C. Amplitude of signal
- D. Frequency of signal
|
| 2 |
Electro magnetic waves emitted from radio antenna are. |
- A. Stationary
- B. Longitudinal
- C. Transvers
- D. Both a and b
|
| 3 |
100 micro F capacitor is connects to an AC voltage 24 V and frequency 50 Hz. The reactance of the capacitor is. |
- A. 30.8 Ohm
- B. 31.8 Ohm
- C. 34.8 Ohm
- D. 40 Ohm
|
| 4 |
The phase difference between current and voltage in an inductive circuit is. |
- A. zero
- B. 90 <sup>o</sup>
- C. 180 <sup>o</sup>
- D. 45<sup>o</sup>
|
| 5 |
Power dissipated in a pure inductor is. |
- A. Large
- B. Small
- C. Infinite
- D. Zero
|
| 6 |
Radio frequency choke is |
- A. Iron cored
- B. Air Cored
- C. Air as well as iron cored
- D. None of these
|
| 7 |
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>
|
| 8 |
The mean value of A.C. in a cycle is. |
|
| 9 |
The basic circuit element in A.C. circuit which controls current. |
- A. Resistor only
- B. Capacitor only
- C. Inductor only
- D. All of these
|
| 10 |
<span style="font-family: tahoma, Arial, Helvetica, sans-serif; font-size: 12px;">If V<sub>rms</sub> be the root mean square value of emf then its peak to peak value is given by</span> |
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