| 1 |
The combined effect of resistance and reactance in circuit is called: |
- A. Impedance
- B. Inductance
- C. Capacitance
- D. None of above
|
| 2 |
The circuit which compares the two voltages is. |
- A. LDR
- B. Sensor
- C. Comparator
- D. Logic gate
|
| 3 |
The device which allows only the flow of D.C. is. |
- A. Capacitors
- B. transformer
- C. Inductor
- D. Generator
|
| 4 |
Radio frequency choke is |
- A. Iron cored
- B. Air Cored
- C. Air as well as iron cored
- D. None of these
|
| 5 |
In frequency modulation, the amplitude of carrier waves is |
- A. Increases
- B. Remains constant
- C. Decreases
- D. None of these
|
| 6 |
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
|
| 7 |
Power dissipation is a pure inductive or in a pure capacitance circuit is: |
- A. 10<sup>6</sup>
- B. 0
- C. 10<sup>∘</sup>
- D. Maximum
|
| 8 |
If the frequency of A.C. supplied is doubled then the capacitive reactance becomes. |
- A. Half
- B. Two
- C. Four times
- D. One fourth
|
| 9 |
The inductive reactance of a coil is direction proportional to. |
- A. Inductance
- B. Resistance
- C. Frequency of A.C.
- D. Both frequency of A.C. and inductance
|
| 10 |
A capacitor is perfectly insulator for: |
- A. Direct current
- B. Alternating current
- C. Direct as well as alternating current
- D. None of these
|
