MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Signals & Systems Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A coil of inductance 10 H, resistance 40 Ω is connected as shown in the figure. After the switch S has been in connection with point 1 for a very long time, it is moved to point 2 at t=0. For the value of R obtained, the time taken for 95 % of the stored energy dissipated is close to? |
| A. | 0.10 s |
| B. | 0.15 s |
| C. | 0.50 s |
| D. | 1.0 s |
| Answer» D. 1.0 s | |
| 2. |
In the circuit given below, the capacitor is initially having a charge of 10 C. 1 second after the switch is closed, the current in the circuit is ________ |
| A. | 14.7 A |
| B. | 18.5 A |
| C. | 40.0 A |
| D. | 50.0 A |
| Answer» B. 18.5 A | |
| 3. |
The impedance seen by the source in the circuit is given by __________ |
| A. | (0.54 + j0.313) Ω |
| B. | (4 – j2) Ω |
| C. | (4.54 – j1.69) Ω |
| D. | (4 + j2) Ω |
| Answer» D. (4 + j2) Ω | |
| 4. |
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. | \(\frac{1}{π\sqrt{2}}\) Hz |
| Answer» C. \(\frac{1}{4π\sqrt{2}}\) Hz | |
| 5. |
For the circuit given below, the inductance measured across the terminals 1 and 2 was 15 H with open terminals 3 and 4. It was 30 H when terminals 3 and 4 were short-circuited. Both the inductors are having inductances 2H. The coefficient of coupling is ______________ |
| A. | 1 |
| B. | 0.707 |
| C. | 0.5 |
| D. | Inderminate due to insufficient data |
| Answer» E. | |
| 6. |
For the circuit given below, the effective inductance of the circuit across the terminal AB, is ___________ |
| A. | 9 H |
| B. | 21 H |
| C. | 11 H |
| D. | 6 H |
| Answer» D. 6 H | |
| 7. |
The Fourier series of the given signal is _______________ |
| A. | -4/π sin x |
| B. | 4/π sin x |
| C. | 4/π cos x |
| D. | -4/π cos x |
| Answer» C. 4/π cos x | |
| 8. |
Given x (t) = [2 + e-3t] u (t). The final value of x(t) is ___________ |
| A. | 2 |
| B. | 3 |
| C. | e-3t |
| D. | 0 |
| Answer» B. 3 | |