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Q. Commercial FM radio broadcasting?
Commercial FM radio broadcasting utilizes the frequency band of 88 to 108 MHz for the transmission ofmusic and voice signals. The carrier frequencies are separated by 200 kHz, and the peak frequency deviation is fixed at 75 kHz. Each station (out of the possible 100) broadcasts in a channel bandwidth of 200 kHz centered on the carrier. The FM system is capable of presenting higher quality audio to the user than AM because of the larger audio band allowed from 50 Hz to 15 kHz. Distortion at most stations is below 1%. Besides broadcast applications, FM is also used in satellite links, aircraft altimetry, radars, amateur radio, and various two-way radio applications. Because of the larger bandwidth (up to 20 times more than in AM), an FM system has more freedom from interference and better performance in noise than any AM station.
Q. A 10-kW, 230-V shunt generator, with an armature-circuit resistance of 0.1 and a field- circuit resistance of 230 , delivers full load at rated voltage and 1000 r/min. If the
In the magnetic circuit shown in Figure (a) the coil of 500 turns carries a current of 4 A. The air-gap lengths are g 1 = g 2 = 0.25 cm and g 3 = 0.4 cm. The cross-sectional are
Q. Parallel - flash converter? Parallel / flash converter. Also known as parallel A/D converter, this circuit is the simplest to understand. It's formed of a series of co
If the instruments has no drift it is perfectly reproducible. No drift means that with a given input the measured values do not vary with time. Drift may be classified into thre
matlab code for handwritten digital
Q. Show Proper cash management? Proper cash management: cash management is a important task of finance management he has to access to various cash needs at the difference time
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A 300 km, 3-phase, 50Hz transmission line has spacing as shown in Figure. Each phase of the line consists of a bundle of three conductors. (a) Find the total per-phase inductanc
Q. Explain Modulation and sampling? Modulation is the process whereby the amplitude (or another characteristic) of a wave is varied as a function of the instantaneous value of
DPR PREPARATION: 1. Asset Management 2. System Operations and Despatch 3. Field Operations 4. Customer Processes 5. Corporate Processes The details covered
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