This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Generation of AM Waves”. 1. Which of the following devices is used to generate AM waves? a) Square-law modulator b) Reactance modulator c) Transmitter d) Transducer 2. What is the disadvantage of FM over AM? a) high modulating power is needed b) … Read more
This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “AM Wave Representation”. 1. AM waves is represented by which equation? a) [1 + m(t)].c(t) b) [1 – m(t)].c(t) c) [1 + m(t)].2c(t) d) [1 + 2m(t)].c(t) 2. For attenuation of high frequencies we can use ________ a) inductor b) shunt capacitance … Read more
This set of Analog Communications Questions and Answers for Campus interviews focuses on “Power Relations in AM Waves”. 1. Calculate power in each sideband, if power of carrier wave is 176W and there is 60% modulation in amplitude modulated signal? a) 13.36W b) 52W c) 67W d) 15.84W 2. For 100% modulation, power in each … Read more
This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Single Tone Modulation”. 1. For Amplitude Modulation, Emitter modulator ________ a) Operates in class C mode b) Has a low efficiency c) Output power is high d) Operates in class B mode 2. Why AM is used for broadcasting? a) More immune … Read more
This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Frequency Domain Description”. 1. What is Amplitude Modulation? a) Change in amplitude of carrier according to modulating signal amplitude b) Change in frequency of carrier according to modulating signal amplitude c) Change in amplitude of carrier according to modulating signal frequency d) … Read more
This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Channel”. 1. Notch is a ________ a) High pass filter b) Low pass filter c) Band stop filter d) Band pass filter 2. Sin wave is ________ a) Aperiodic Signal b) Periodic Signal c) Random Signal d) Deterministic Signal 3. What is … Read more
This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Receiver”. 1. Demodulation is done in ________ a) Channel b) Receiver c) Receiving antenna d) Transducer 2. What is Fidelity? a) Equally amplifies all the signal frequencies at receiver b) Ability of receiver to select wanted signal from various incoming signal c) … Read more
This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Transmitter”. 1. Modulation is done in ________ a) Receiver b) Transducer c) Between transmitter and radio receiver d) Transmitter 2. In TV transmission, picture signal is ________ modulated. a) DSB-SC b) VSB c) SSB-SC d) Pulse 3. In TV transmission, sound signal … Read more
This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Source of Information”. 1. FM stands for ________ a) Frequency Modulation b) Frequency Modulator c) Frequent Frequent Multiplier d) Frequency Mixer 2. Why a sinusoidal signal is considered analog? a) It moves in both positive and negative direction b) It is positive … Read more
