Explore topic-wise MCQs in Analog Communications.

This section includes 5 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 __________ of an AM signal resembles the shape of baseband signal.

A. upperband
B. lowerband
C. efficiency
D. envelope
Answer» E.
Discussion
2.

To demodulate a USB SSB signal, the receiver must ________

A. be set to USB mode
B. reinsert the carrier
C. be set to USB mode and reinsert the carrier
D. have low-fidelity
Answer» D. have low-fidelity
Discussion
3.

A single sideband modulation system requires a more complex demodulator circuit.

A. True
B. False
Answer» B. False
Discussion
4.

Which frequencies is produced if Va sin ( a t) amplitude modulates the carrier Vc sin ( c t)?

A. ( <sub>c</sub> + <sub>a</sub>), ( <sub>c</sub> <sub>a</sub>) and <sub>c</sub>
B. ( <sub>c</sub>) and ( <sub>a</sub>)
C. ( <sub>c</sub> + <sub>a</sub>) and (2 <sub>c</sub> + 2 <sub>a</sub>)
D. (2 <sub>c</sub>) and (2 <sub>a</sub>)
Answer» B. ( <sub>c</sub>) and ( <sub>a</sub>)
Discussion
5.

What is the modulation index of an AM signal if the peak voltage goes from Emax to Emin?

A. ( frac{E_{min}}{E_{max}} )
B. ( frac{E_{max}}{E_{min}} )
C. ( frac{E_{max} E_{min}}{E_{max} + E_{min}} )
D. ( frac{E_{max} + E_{min}}{E_{max} E_{min}} )
Answer» D. ( frac{E_{max} + E_{min}}{E_{max} E_{min}} )
Discussion