MCQOPTIONS
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MCQOPTIONS
This section includes 11 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. |
For a low level AM system, amplifier modulated stage must have _________ |
| A. | harmonic devices |
| B. | linear devices |
| C. | non-linear devices |
| D. | class A amplifiers |
| Answer» C. non-linear devices | |
| 2. |
What do you understand by the term “carrier” in modulation? |
| A. | voltage to be transmitted |
| B. | resultant wave |
| C. | voltage for which amplitude, phase or frequency can be varied |
| D. | voltage for which amplitude, phase or frequency remains constant |
| Answer» D. voltage for which amplitude, phase or frequency remains constant | |
| 3. |
CARRIER_WAVE_IN_MODULATION_IS_A_RESULTANT_WAVE.?$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
For_a_low_level_AM_system,_amplifier_modulated_stage_must_have__________$ |
| A. | harmonic devices |
| B. | linear devices |
| C. | non-linear devices |
| D. | class A amplifiers |
| Answer» C. non-linear devices | |
| 5. |
What do you understand by the term “carrier” in modulation?# |
| A. | voltage to be transmitted |
| B. | resultant wave |
| C. | voltage for which amplitude, phase or frequency can be varied |
| D. | voltage for which amplitude, phase or frequency remains constant |
| Answer» D. voltage for which amplitude, phase or frequency remains constant | |
| 6. |
It is only the reflected color that decided the color of an object. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Circular polarization involves critical alignment between transmitting and receiving antenna. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
Which polarization is used to reduce depolarization effect on received waves? |
| A. | Circular polarization |
| B. | Linear polarization |
| C. | Atomic polarization |
| D. | Dipolar polarization |
| Answer» B. Linear polarization | |
| 9. |
A cordless telephone that uses separate frequencies for transmission in base and portable units is called _________ |
| A. | half duplex |
| B. | duplex |
| C. | simplex |
| D. | one-way communication |
| Answer» C. simplex | |
| 10. |
VSB modulation is used in televisions because it avoids phase distortion at low frequencies. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
A duplex arrangement use separate frequencies for transmission. |
| A. | True |
| B. | False |
| Answer» B. False | |