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1. (a) Consider a sinusoidal signal m(t) = A cos(2 Π fmt) applied to a delta modulator with step size . Determine the range of the step size so that slope overload will be avoided.
(b) Assume that delta modulation (DM) system is designed to operate at 3 times the Nyquist rate of the input signal. The quantizing step size is 250 mV. Determine the maximum amplitude of a 1-kHz input sinusoid for which the delta modulator does not show slope overload.
Q. A transistor has a base current i B = 25 µA, α = 0.985, and negligible ICBO. Find β, iE, and i .
CURRENTLY, orthogonal frequency division multiplexing (OFDM) is emerging as the preferred modulation technique in modern high data rate broadband wireless mobile communication syst
The winding of an electromagnet has an inductance of 3H and a resistance of 15?. When it is connected to a 120 V d.c. supply, Determine:
Calculation of Receiving End Voltage Consider the simple circuit shown in Figure. To find the voltage V 2 using analytical method: P = I V 2 = 0.5 ..... (1)
Q. A current of 65 A is measured with an analog ammeter having a probable error of ± 0.5% of full scale of 100 A. Find the maximum probable percentage error in the measurement.
Compute the ampacity of a 250 AWG copper conductor with type UF insulation that will be used in an area with an ambient temperature of 79°F (26°C). State the ampacity and explain h
The material with lowest resistivity is (A) Constantan. (B) Silver. (C) manganin. (D) nichrome. Ans: The material with lowest resist
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Q. (a) Excess-3 code is a 4-bit binary code for the 10 decimal digits and is found useful in digital computer arithmetic. Each combination is found by adding 3 to the decimal nu
How address and data lines are demultiplexed in 8085? AD0-AD7 lines are multiplexed and the lower half of address A0-A7 is available only during T1 of the machine cycle. This
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