MCQOPTIONS
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MCQOPTIONS
This section includes 19 Mcqs, each offering curated multiple-choice questions to sharpen your Analog Communications knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The ability of receivers to select the wanted signals among various incoming signal is called ________ |
| A. | Selectivity |
| B. | Fidelity |
| C. | Sensitivity |
| D. | Modulation |
| Answer» B. Fidelity | |
| 2. |
Cell phones sent information in form of ________ |
| A. | microwaves |
| B. | electrical signals |
| C. | infrared Waves |
| D. | radio waves |
| Answer» E. | |
| 3. |
Telephones send information through wires in form of ________ |
| A. | radio signals |
| B. | electrical signal |
| C. | electromagnetic waves |
| D. | microwaves |
| Answer» C. electromagnetic waves | |
| 4. |
Medium which sends information from source to receiver is called ________ |
| A. | Transmitter |
| B. | Transducer |
| C. | Loudspeaker |
| D. | Channel |
| Answer» E. | |
| 5. |
Amplitude Modulation suffers from ________ |
| A. | Side-band Suppression |
| B. | IntraPulse Modulation |
| C. | Cross Modulation |
| D. | Carrier Suppression |
| Answer» D. Carrier Suppression | |
| 6. |
The minimum height of antenna required for transmission in terms of ʎ is ________ |
| A. | 3ʎ⁄2 |
| B. | ʎ⁄4 |
| C. | 2ʎ |
| D. | ʎ |
| Answer» C. 2ʎ | |
| 7. |
MEDIUM_WHICH_SENDS_INFORMATION_FROM_SOURCE_TO_RECEIVER_IS_CALLED_________?$ |
| A. | Transmitter |
| B. | Transducer |
| C. | Loudspeaker |
| D. | Channel |
| Answer» E. | |
| 8. |
Cell phones sent information in form of ________$ |
| A. | microwaves |
| B. | electrical signals |
| C. | infrared Waves |
| D. | radio waves |
| Answer» E. | |
| 9. |
Telephones_send_information_through_wires_in_form_of_________$ |
| A. | radio signals |
| B. | electrical signal |
| C. | electromagnetic waves |
| D. | microwaves |
| Answer» C. electromagnetic waves | |
| 10. |
Which device is used for tuning the receiver according to incoming signal (especially in TV)? |
| A. | Low pass filter |
| B. | High pass filter |
| C. | Zener diode |
| D. | Varacter diode |
| Answer» E. | |
| 11. |
Ability of receivers to select the wanted signals among various incoming signal is called ________ |
| A. | Selectivity |
| B. | Fidelity |
| C. | Sensitivity |
| D. | Modulation |
| Answer» B. Fidelity | |
| 12. |
Amplitude Modulation suffers from _______? |
| A. | Side-band Suppression |
| B. | IntraPulse Modulation |
| C. | Cross Modulation |
| D. | Carrier Suppression |
| Answer» D. Carrier Suppression | |
| 13. |
If Output can be represented as linear combination of input then ________ |
| A. | The system is linear |
| B. | The system is causal |
| C. | The system is non causal |
| D. | The system is time invariant |
| Answer» B. The system is causal | |
| 14. |
Data transmitted for a given amount of time is called ________ |
| A. | Noise |
| B. | Power |
| C. | Frequency |
| D. | Bandwidth |
| Answer» E. | |
| 15. |
What is Demodulation? |
| A. | Process of varying one or more properties of a periodic waveform |
| B. | Recovering information from modulated signal |
| C. | Process of mixing a signal with a sinusoid to produce a new signal |
| D. | Involvement of noise |
| Answer» C. Process of mixing a signal with a sinusoid to produce a new signal | |
| 16. |
What do you understand by the term analog communication? |
| A. | A method in which one of the properties of a carrier signal varies in proportion to an instantaneous value of modulation signal |
| B. | A way for data and computer communication |
| C. | A numerical coded communication |
| D. | A suitable method for long distance communication |
| Answer» B. A way for data and computer communication | |
| 17. |
The minimum height of antenna required for transmission in terms of  é is ________$ |
| A. | <sup>3 é</sup>‚ÅÑ<sub>2</sub> |
| B. | <sup> é</sup>‚ÅÑ<sub>4</sub> |
| C. | 2 é |
| D. |  é |
| Answer» C. 2¬¨‚Ć‚àö¬© | |
| 18. |
Why a sinusoidal signal is considered analog? |
| A. | It moves in both positive and negative direction |
| B. | It is positive for one half cycle |
| C. | It is negative for one half cycle |
| D. | It has infinite number of amplitudes in the range of values of the independent variable |
| Answer» E. | |
| 19. |
FM stands for ________ |
| A. | Frequency Modulation |
| B. | Frequency Modulator |
| C. | Frequent Frequent Multiplier |
| D. | Frequency Mixer |
| Answer» B. Frequency Modulator | |