Understand the principles of Quadrature Phase Shift Keying (QPSK). Measure Bit Error Rate (BER). Understand the effects of having phase errors in the received signal.

i need matlab code for qpsk modulation and demodulation both

also bit rate error using of the recived signal

i repeat i need matklab code for all task  

1) qpsk modulation

2) qpsk demodulation

3) ber bit eroor rate matlab code

Three point electric charges of magnitude Q1=2.0 μC, Q2= -1.0 μC, and Q3= 2.0 μC are situated in a straight line in air 10 cm apart (the negative charge is in the middle). Determine the of the force of each charge on the other two.

Answer in MATLAB format. 4. A telephone line hangs between two poles 14 m apart in the shape of a catenary y = 20cosh (x/20)-15, where x and y are measured in meters. a. Find the slope of this curve where it meets the right pole. b. Find the angle, θ between the line and the pole.

Please do it clearly on white A4 page. thanks

A three-phase, 4 poles, 1200Hp, 2300V, 60 Hz Delta connected synchronous motor has a synchronous reactance of 5 Ohm. At full load the line current is 265 A and lags the terminal voltage. Neglect all losses and compute the following

Torque of the motor

Ea and delta angle

Motor Power Factor

Reactive power

A current transformer rated 500/5 A, 20 VA, 50 Hz has a turns ratio of 1:99. Its
resistance aand leakage reluctance of the secondary winding are 0.4 Ω and 0.35 Ω
respectively. At rated non-inductive burden, the inphase and quadrature components of
the exciting mmf are 6 AT and 8 AT respectively. Determine the current and phase angle error.

please explain in detail in one page UPS(uninterrupted power supply ) redundancy impact on cable dimension and Automatic transfer switches.in power design.

Q5
(a) Briefly explain power system stability

Is it reasonable to assume that, as battery technology continues to improve, electric vehicles will have longer and longer ranges? Will these advancements continue on for many years? Will EV ranges get way better than those of internal combustion engine vehicles with time? Explain.

please explain in depth during power design the impact of changing distance from UPS to each server room for power design. explain the impact of voltage drop because of this change.

1. Explain the time constant and its formula derivatives!
for R-L circuit
for R-C circuit
for R-L-C circuit
give step by step how to get he formula,( not only the formula.)

2. Draw and explain the simple triangle wave generator circuit!
3. Find out and explain how the LPF and HPF circuits work with capacitors!
4. explain how the capacitors and inductors work as clearly as possible and give an example of the application

a. For an induction motor, differentiate between synchronous speed, rotor speed and slip speed.
b. State the two basic types of construction used for the rotors of induction motors. Which is the
most rugged and explain why.
c. Draw full equivalent circuit for one phase of an induction motor with all parameters labelled
and named.
d. Draw and explain power flow diagram of 3 phase induction motor.
e. Mention four (4) components of induction machine. Explain briefly the function of each of
the components.
f. Mention three (3) parts of induction motor.
g. Briefly explain the function (s) of each the parts stated in 1f.

Derive the input impedance of the transmission line of Z0, length ‘l’ and terminated with Zl.

A30 MW, 37.5 MVA 33KV, star connected alternator is protected by a circulating current protective scheme using 600/ 1A CTsand (unbiased ) relays set to operate at 10%t of their rated current (IA) .(a)if the earthing resistor is 90% based on the machine's rating ,estimate the %age of the stator winding which is not protected against an earth fault . (b) If it is required to protect 90% of the winding ,estimate the value of the earthing resistor in ohms and percent based on machine rating .( draw the scheme in star and Delta connection ).

an L band radar operating at 1.25GH uses a peak pulse power of 3MW and must have a range of 185.2km for objects whose radar cross section is 1m^2. If the minimum receivable power of the receiver could have , assuming it to be full paraboloid with k= 0.65?