| 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
|
| 2 |
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>
|
| 3 |
At high frequency, the current through a capacitor is |
- A. Small
- B. Infinity
- C. Zero
- D. Large
|
| 4 |
The main use of A.C is |
- A. Minimum line losses
- B. Long distance transmission
- C. Stepping up to required voltage only
- D. Steeping down to required voltage only
|
| 5 |
The internal resistance of a capacitor is called: |
- A. Impedance
- B. Resistance
- C. Reactance
- D. Conductance
|
| 6 |
The unit of impedance is |
- A. Farad
- B. Henry
- C. Tesla
- D. Ohm
|
| 7 |
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>
|
| 8 |
In pure capacitor A.C. circuit, the current I and charge q are. |
- A. In phase
- B. Out of phase
- C. Parallel to each other
- D. None of above
|
| 9 |
Choke consumes extremely small |
- A. Current
- B. Charge
- C. Power
- D. Potential
|
| 10 |
The A.M. transmission frequencies range from |
- A. 540 KHz to 1000 KHz
- B. 540 Khz to 1600 KHz
- C. 520 KHz TO 1600 KHz
- D. 520 KHz TO 1400 KHz
|
