MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Signals Systems knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the period of the signal :jejw11t? |
| A. | 2π/10 |
| B. | 2π/11 |
| C. | 4π/10 |
| D. | 4π/11 |
| Answer» C. 4π/10 | |
| 2. |
What is the fundamental period of the signal : ejwt? |
| A. | 2π/w |
| B. | 2π/w2 |
| C. | 2π/w3 |
| D. | 4π/w |
| Answer» B. 2π/w2 | |
| 3. |
Under what conditions the three signals x(t), y(t) and z(t) with period t1 t2 and t3 respectively are periodic? |
| A. | t1/t2= t2/t3 |
| B. | t1/t2 is rational |
| C. | All the ratios of the three periods in any order is rational |
| D. | t1/t2/t3= rational |
| Answer» D. t1/t2/t3= rational | |
| 4. |
What is the necessary and sufficient condition for a sum of a periodic continuous time signal to be periodic? |
| A. | Ratio of period of the first signal to period of other signals should be constant |
| B. | Ratio of period of the first signal to period of other signals should be finite |
| C. | Ratio of period of the first signal to period of other signals should be real |
| D. | Ratio of period of first signal to period of other signal should be rational |
| Answer» E. | |
| 5. |
How is the period of the sum signal computed as? |
| A. | T*n |
| B. | T*T |
| C. | T*N+M |
| D. | T *(n+m) |
| Answer» B. T*T | |
| 6. |
When is the sum of M periodic signals periodic? |
| A. | T/Ti = 1 |
| B. | T/Ti = 4 |
| C. | T/Ti = ni |
| D. | T/Ti = m+n |
| Answer» D. T/Ti = m+n | |
| 7. |
What is the area of a periodic signal in a periodic interval? |
| A. | It depends on the situation |
| B. | It is same as the area in the previous interval |
| C. | It is different in different situations |
| D. | It is the square of the fundamental period |
| Answer» C. It is different in different situations | |
| 8. |
What is the general range of a period of a signal? |
| A. | It can have of any value from positive to negative |
| B. | It can be negative |
| C. | It can be positive |
| D. | It is always positive |
| Answer» E. | |
| 9. |
A discrete time periodic signal is defined as x(n)= x(n+N)How is the N defined here? |
| A. | Samples/ cycle |
| B. | Samples/ twice cycle |
| C. | Fundamental period |
| D. | Rate of change of the period |
| Answer» B. Samples/ twice cycle | |
| 10. |
Comment on the periodicity of a constant signal? |
| A. | It is periodic |
| B. | It is not periodic |
| C. | It is a mixture of period and aperiodic signal |
| D. | It depends on the signal |
| Answer» C. It is a mixture of period and aperiodic signal | |
| 11. |
What is a fundamental period? |
| A. | Every interval of a periodic signal |
| B. | Every interval of an aperiodic signal |
| C. | The first interval of a periodic signal |
| D. | The last interval of a periodic signal |
| Answer» D. The last interval of a periodic signal | |
| 12. |
Periodic signals actually exist according to a definition. |
| A. | True |
| B. | False |
| Answer» C. | |
| 13. |
What is the time period of a periodic signal in actual terms? |
| A. | The signals which start at t=-∞ and end at t=+∞ |
| B. | The signals which have a finite interval of occurrence |
| C. | The signals which start at t= -∞ and ends at a finite time period |
| D. | The signals which have a short period of occurrence |
| Answer» B. The signals which have a finite interval of occurrence | |
| 14. |
Periodic signals are different in case of continuous time and discrete time signals. |
| A. | True |
| B. | False |
| Answer» C. | |
| 15. |
What are periodic signals? |
| A. | The signals which change with time |
| B. | The signals which change with frequency |
| C. | The signal that repeats itself in time |
| D. | The signals that repeat itself over a fixed frequency |
| Answer» D. The signals that repeat itself over a fixed frequency | |