| 1 |
X<sub>L</sub>= |
- A. 2πfL
- B. 1/2πfL
- C. 2πfL
- D. fL/2π
|
| 2 |
The slope of q-t curve at any instant of time gives. |
- A. Voltage
- B. Current
- C. Charge
- D. Botha a and b
|
| 3 |
Power dissipated in a pure inductor is. |
- A. Large
- B. Small
- C. Infinite
- D. Zero
|
| 4 |
The main reason for world wide use of A.C is because: |
- A. It is very high power
- B. It can be transmitted over long distance
- C. It is cheaper to use
- D. ALl of above
|
| 5 |
Radio frequency choke is |
- A. Iron cored
- B. Air Cored
- C. Air as well as iron cored
- D. None of these
|
| 6 |
The peak value of alternating current is 5<b style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">√2 </b><span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">A. The mean square value of current will be:</span> |
- A. 5A
- B. 2.5A
- C. 5<b style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">√2A</b>
- D. 5<sup>2</sup>
|
| 7 |
The unit of impedance is |
- A. Farad
- B. Henry
- C. Tesla
- D. Ohm
|
| 8 |
In A.C circuit through a capacitor which one is: |
- A. Current leads voltage by 90<sup>∘</sup>
- B. Current lags behind voltage by 90<sup>∘</sup>
- C. Both will be in phase
- D. None of above
|
| 9 |
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>
|
| 10 |
Unit of impedance is: |
- A. Ohm
- B. Ohm<sup>-1</sup>
- C. no unit
- D. Ohm m<sup>-1</sup>
|
