| 1 |
An inductor of 1 henry inductance has a reactance 500 ohms, then the frequency required is approximately |
- A. 50 Hz
- B. 100 Hz
- C. 80 Hz
- D. 120 Hz
|
| 2 |
High frequency radio wave is called as |
- A. Fluctuate
- B. Carrier wave
- C. Matter wave
- D. Mechanical wave
|
| 3 |
Average value of current and voltage over a complete cycle is. |
- A. Positive
- B. Negative
- C. Zero
- D. Infinite
|
| 4 |
when an inductor comes close to a metallic object, its inductance is. |
- A. Decreased
- B. Increased
- C. Becomes half
- D. Becomes 4 times
|
| 5 |
The flow of D.C current is opposed by |
- A. Resistor
- B. Induction
- C. Capacitor
- D. All of these
|
| 6 |
The combined effect of resistance and reactance is knows as. |
- A. Inductance
- B. Conductance
- C. Resistance
- D. Impedance
|
| 7 |
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>
|
| 8 |
Electro magnetic waves emitted from radio antenna are. |
- A. Stationary
- B. Longitudinal
- C. Transvers
- D. Both a and b
|
| 9 |
The combined effect of resistance and reactance in circuit is called: |
- A. Impedance
- B. Inductance
- C. Capacitance
- D. None of above
|
| 10 |
Which consumes small power. |
- A. Inductor
- B. Resistor
- C. Motor
- D. All of these
|