This set of Analog Communications Question Bank focuses on “Carrier Acquisition Techniques in DSB-SC”. 1. Flyback switched mode is used in television because it can supply many voltage outputs. a) True b) False 2. What will be the effect on power if the modulation index of a frequency modulated signal is increased? a) increases b) … Read more
This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Quadrature Carrier Multiplexing”. 1. The output stage in a television transmitter is likely to be ________ a) screen modulated b) plate modulated c) rectangular modulated d) grid modulated 2. The advantage of using mechanical filter in filter system of sideband suppression is … Read more
This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Problems of DSBSC”. 1. A Marconi antenna has length equal to ________ a) ʎ⁄4 b) ʎ⁄2 c) 1 d) ʎ⁄8 2. In a Vidicon camera tube, both sides of the target plate have the coating of antimony tri-sulphide. a) True b) False … Read more
This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Costas Loop”. 1. Costa’s receiver is used for ________ a) coherent detection of AM-SC signal b) asynchronous detection of AM-SC signal c) amplification of signal d) frequency mixing of signal 2. Helical antenna is mainly used for ________ a) bandwidth calculation b) … Read more
This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Hilbert Transform”. 1. If a receiver has poor selectivity then it also have poor ________ a) sensitivity b) blocking of unwanted signals c) double spotting d) reception 2. For a large amount of power, a push pull amplifier is designed for operation … Read more
This set of Analog Communications Questions and Answers for Freshers focuses on “Coherent Detection of DSBSC Waves”. 1. Which among the following is the drawback of Pulse Position Modulation (PPM)? a) Synchronization is required between receiver and transmitter b) Synchronization is not required between receiver and transmitter c) Amplitude is constant d) Instantaneous power of … Read more
This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Generation of DSBSC Waves”. 1. LCD uses ________ a) sematic crystals b) twisted nematic crystals c) nematic crystals d) cholesteric crystals 2. Which of the following stage is present in FM receiver but not in AM receiver? a) Amplitude limiter b) Demodulator … Read more
This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Frequency Domain Representation”. 1. The spectrum of white noise and impulse noise is similar in terms of ________ a) magnitude spectrum b) phase spectrum c) both magnitude spectrum and phase spectrum d) amplitude spectrum 2. The amount of power and bandwidth necessary … Read more
This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Time Domain Description”. 1. Distance between direct broadcasting satellite and earth’s surface is ________ a) 4500km b) 33000km c) 5200km d) 36000km 2. UHF stands for ________ a) Ultra High Electric Field b) Ultraviolet High Frequency c) Ultra High Frequency d) Ultra … Read more
This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Average Power For Sinusoidal AM”. 1. A 1000KHz carrier is modulated by 100Hz and 200Hz waves, then which of the following frequencies cannot be present at the output? a) 1000.1KHz b) 999.9KHz c) 1000.2KHz d) 999.7KHz 2. Aspect ratio is the ratio … Read more
