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Consider a satellite communication link with a one way propagation delay of 300ms between the sender and receiver, operating at 10Mbps using packets of length 1500bytes. Length of the ACK packet is also 1500 bytes.
a) What is the minimum timeout period required for the Stop-and-Wait protocol? The timer is set when the last bit is transmitted.
b) What is the maximum effective data rate of the link for this protocol?
c) Find the minimum window size with which Go-Back-N would be able to achieve 100% efficiency in the absence of any errors.
d) Find the data rate that can be achieved with Stop & Wait and Go-Back-N, if the frame error rate is 10-2 ?
Explain why an instrumentation amplifier has more than one stage? How would you increase the output current of an op-amp?
Determine the surface charge density on each conductor.
Using 4 PSK or 2 PSK with the same total power as a reference, calculate the Eb/No versus Pe waterfall plot and compare the asymptotic coding gain of the coder/encoder.
Four frequencies are applied at the input of a non-linear amplifier. Write down all of the frequency components at the output of the non-linear device. Write down only the first three harmonics.
A 150 MVA, 24 kV, 123% three-phase synchronous generator carries the rated load at a power factor 0.83 (lagging). Calculate the necessary excitation voltage and input complex power.
For a circuit with resistor of 10 K ohm and a capacitor of 5 micro Farads, what is the time constant in second?
Given a co-axial cable to which Pinner = a and Pouter = b energized +Q, -Q where -+Q is the inner cable charge. a) Find E' for a
Calculate the electrostatic energy that is stored in the structure if the intermediate space is filled with a dielectric whose relative dielectric constant is 10 and a voltage is applied between the conductors creating an electric field.
Understanding low, high and band pass filters, A signal in the IF section of an FM radio receiver occupies the frequency band 10.61 MHz to 10.79 MHz. Compute the bandwidth of this signal.
Current to Voltage Op Amp Circuit, A 12-bit DAC (Digital to Analogue Converter) gives an output range of 0 to 1 mA for a digital input word of 0 to 4095
Solve the equation z^2+z+1=0 using z=(x,y) and the basic definitions. (Hint: Note that y does not equal 0 because the equation X^2+X+1 does not equal 0 for any real number x.)
At what temperature are the two carrier densities equal?
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