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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.
Static Electricity : This is produced when two substances are rubbed together; the substances may be solids, liquids, or gases. Typical sources of static electricity are: i) dr
Q. Explain Position servo in a radar system? Figure depicts the essential elements of a position servo system. In a radar system, an electromagnetic pulse is radiated from an a
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Q. Determine the transfer function C(s)/R(s) of the nested-loop feedback system shown in Figure.
Q. Determine the Fourier series for the periodic wave - forms given in Figure.
Q. With the help of circuit diagram explain a Miller Sweep generator Figure given below shows the circuit of a Miller integrator or a sweep circuit. Transistor Q1 acts as a swi
Suppose that a video signal, having W = 5 MHz, is transmitted via FM with f = 20 MHz. For 1/100 ≤ B/fc ≤ 1/10, determine the bounds on the carrier frequency. Use WFM ∼ = 2( ω + 2W
Task a) Investigate and describe the significance of the following: i. Slenderness ratio and buckling in columns ii. Effective length of columns b) Explain Eu
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