MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Network Theory Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
For a transmission line, open circuit and short circuit impedances are 10 Ω and 20 Ω. Then characteristic impedance is ____________ |
| A. | 100 Ω |
| B. | 50 Ω |
| C. | 25 Ω |
| D. | 200 Ω |
| Answer» E. | |
| 2. |
A series RC circuit has R = 15 Ω and C = 1 μF. The current in the circuit is 5 sin 10t. The applied voltage is _____________ |
| A. | 218200 cos (10t – 89.99°) |
| B. | 218200 sin (10t – 89.99°) |
| C. | 218200 sin (10t) |
| D. | 218200 cos (10t) |
| Answer» C. 218200 sin (10t) | |
| 3. |
The impedance of an RC series circuit is 12 Ω at f = 50 Hz. At f = 200 Hz, the impedance will be? |
| A. | More than 12 |
| B. | Less than 3 |
| C. | More than 3 Ω but less than 12 Ω |
| D. | More than 12 Ω but less than 24 Ω |
| Answer» D. More than 12 Ω but less than 24 Ω | |
| 4. |
In an RC series circuit R = 100 Ω and XC = 10 Ω. Which of the following is possible? |
| A. | The current and voltage are in phase |
| B. | The current leads the voltage by about 6° |
| C. | The current leads the voltage by about 84° |
| D. | The current lags the voltage by about 6° |
| Answer» C. The current leads the voltage by about 84° | |
| 5. |
In the circuit given below, the series circuit shown in figure, for series resonance, the value of the coupling coefficient, K will be? |
| A. | 0.25 |
| B. | 0.5 |
| C. | 0.1 |
| D. | 1 |
| Answer» B. 0.5 | |
| 6. |
A two branch parallel circuit has a 50 Ω resistance and 10 H inductance in one branch and a 1 μF capacitor in the second branch. It is fed from 220 V ac supply, at resonance, the input impedance of the circuit is _____________ |
| A. | 447.2 Ω |
| B. | 500 Ω |
| C. | 235.48 Ω |
| D. | 325.64 Ω |
| Answer» B. 500 Ω | |