| 1 |
In RLC series circuit at resonance the phase difference between capacitor and inductor reactance is. |
- A. 90<sup>o</sup>
- B. 270<sup>o</sup>
- C. 0<sup>o</sup>
- D. 180<sup>o</sup>
|
| 2 |
Electro magnetic waves emitted from radio antenna are. |
- A. Stationary
- B. Longitudinal
- C. Transvers
- D. Both a and b
|
| 3 |
The phase difference between the current and voltage at resonce is: |
- A. 0
- B. <span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">π</span>
- C. -<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">π</span>
- D. <span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">π/2</span>
|
| 4 |
Choke consumes extremely small |
- A. Current
- B. Charge
- C. Power
- D. Potential
|
| 5 |
Radio frequency choke is |
- A. Iron cored
- B. Air Cored
- C. Air as well as iron cored
- D. None of these
|
| 6 |
X<sub>L</sub>= |
- A. 2πfL
- B. 1/2πfL
- C. 2πfL
- D. fL/2π
|
| 7 |
In Pakistan the frequency of A.C. supply is. |
- A. 50 Hz
- B. 60 Hz
- C. 45 Hz
- D. 70 Hz
|
| 8 |
At high frequency, the current through a capacitor is |
- A. Small
- B. Infinity
- C. Zero
- D. Large
|
| 9 |
The peak to peak value of alternating voltage is |
- A. 2V<sub>o</sub>
- B. V<sub>o</sub>
- C.
- D. None of these
|
| 10 |
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>
|
