MCQOPTIONS
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MCQOPTIONS
This section includes 7 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. |
The average power absorbed by an impedance Z = 30 – j 70 Ω when a voltage V = 120∠0° is applied is _____________ |
| A. | 35 |
| B. | 37.24 |
| C. | 45 |
| D. | 50.25 |
| Answer» C. 45 | |
| 2. |
A current of [2 + \(\sqrt{2}\)sin (314t + 30) + 2\(\sqrt{2}\)cos (952t +45)] is measured with a thermocouple type, 5A full scale, class 1 meter. The meter reading would lie in the range? |
| A. | 5 A ± 1 % |
| B. | (2 + 3\(\sqrt{2}\)) A ± 1% |
| C. | 3 A ± 1.7 % |
| D. | 2 A ± 2.5 % |
| Answer» D. 2 A ± 2.5 % | |
| 3. |
A (350 A/7A), 50 Hz current transformer has a primary bar. The secondary has a pure resistance of 1 Ω. It also draws a current of 5 A. The magnetic core requires 350 AT for magnetization. Find the percentage ratio error. |
| A. | 10.56 |
| B. | -28.57 |
| C. | 11.80 |
| D. | -11.80 |
| Answer» C. 11.80 | |
| 4. |
The inductance of a certain moving- iron ammeter is expressed as L = 10 + 3θ – \(\frac{θ^2}{4}\) μH, where θ is the deflection in radian from the zero position. The control spring torque is 25 × 10-6 Nm/rad. If the meter is carrying a current of 5 A, the deflection is ____________ |
| A. | 2.4 |
| B. | 2.0 |
| C. | 1.2 |
| D. | 1.0 |
| Answer» D. 1.0 | |
| 5. |
The effective inductance of the circuit across the terminals A, B is _______________ |
| A. | 9 H |
| B. | 21 H |
| C. | 11 H |
| D. | 6 H |
| Answer» D. 6 H | |
| 6. |
In the figure given below, the time constant of the circuit is ______________ |
| A. | 2RC |
| B. | 3RC |
| C. | \(\frac{RC}{2}\) |
| D. | \(\frac{2RC}{3}\) |
| Answer» E. | |
| 7. |
In the circuit given below, the resonant frequency is ____________ |
| A. | \(\frac{1}{2π\sqrt{3}}\) Hz |
| B. | \(\frac{1}{4π\sqrt{3}}\) Hz |
| C. | \(\frac{1}{4π\sqrt{2}}\) Hz |
| D. | \(\frac{1}{2π\sqrt{6}}\) Hz |
| Answer» E. | |