A 480 V, 50 Hz, Y-connected six-pole synchronous generator has a per-phase synchronous reactance of 1.0
Ω. Its full-load armature current is 60 A at 0.8 PF lagging. Its friction and windage losses are 1.5 kW and
core losses are 1.0 kW at 60 Hz at full load. Assume that the armature resistance (and, therefore, the I2R
losses) can be ignored. The field current has been adjusted such that the no-load terminal voltage is 480 V.
a. What is the speed of rotation of this generator?
b. What is the terminal voltage of the generator if :

c. What is the efficiency of this generator (ignoring the unknown electrical losses) when it is operating
at the rated current and 0.8 PF lagging?
d. How much shaft torque must be applied by the prime mover at the full load? how large is the induced
counter-torque?
e. What is the voltage regulation of this generator at
i. 0.8 PF lagging ii. at Unity PF iii. at 0.8 PF leading?
a. The figure below is a set of Synchronous Generator and Synchronous Motor. The ratings of the
machines are as follows:
Synchronous Generator: . 3ph, 1.0 MVA, 2.3kV, 50Hz, 0.85 lagging power factor, Xs =0.9 pu
Synchronous Motor: 3ph, 0.5 MVA, 2.3kV, 50Hz, 0.85 leading power factor, Xs =0.8 pu
The generator is equipped with a voltage regulator which maintains the terminal voltage at the rated value.
The motor delivers 500 hp and it field current is adjusted to make it operate at unity power factor.

a. The figure below is a set of Synchronous Generator and Synchronous Motor. The ratings of the
machines are as follows:
Synchronous Generator: . 3ph, 1.0 MVA, 2.3kV, 50Hz, 0.85 lagging power factor, Xs =0.9 pu
Synchronous Motor: 3ph, 0.5 MVA, 2.3kV, 50Hz, 0.85 leading power factor, Xs =0.8 pu
The generator is equipped with a voltage regulator which maintains the terminal voltage at the rated value.
The motor delivers 500 hp and it field current is adjusted to make it operate at unity power factor.

The following test results are obtained for a 3ph, 25 kV, 750 MVA, 50 Hz, 3600rpm, star-connected
synchronous machines at rated speed.

If=1500A VLL(Open circuit)=25KV, IA(open circuit test)=10000A,VLL(air gap line)=30KV

g. Calculate the capacitance of a square parallel plate capacitor having two
dielectrics εr1=2.5 and εr2=3.5 each comprising one half of the area between
the plates. The area of a plate is 4.0 x 104 cm2 and the two plates separated by
a distance of 20mm.
h. If a 24V volts electric potential is applied across the terminals of this
capacitor described above, find the electric potential energy stored in the
capacitor.

please answer these for me

Suggest two techniques to compensate the effect of distance between the sensor and forehead on the accuracy of IR temperature sensor and
Design an experiment setup for determination the time constant of a thermistor?

What cause the main transient response of the system.

• A. Dominant roots

• B. Locus

• C. Asymptote centroid

• D. Auxiliary polynomial

Design a 3-bit 2’s complement adder/subtractor with overflow flag detection

Design and simulate a structural model (not behavioral) of a 3-bit Adder/Subtractor). Use the 3-bit carry propagate adder of the project as a module for your adder/subtractor. The inputs A and B should be positive binary numbers where vector B must be converted to a negative 2's complement when a subtraction operation is configured. When m=0 it should perform and addition (A+B) and if m=1 it should perform a subtraction operation (A-B)

Your module ports (inputs and outputs), should be as follow:

module add_sub(

   input [2:0] a, b,

   input m,   // m=0 => addition (a+b);   m=1 => subtraction (a-b)

   output [2:0] result,  

   output overflow

);

/* your wire declarations, n-bit adder and xor gates

go in this section */

endmodule

Create a test bench to test the following 2’s complement cases:

a = 3’b001 b = 3’b001 m = 1’b0     // (1+1=2) => result = 3’b010;  overflow = 1’b0

a = 3’b011 b = 3’b010 m = 1’b1   // (3-2=1) => result = 3’b001;   overflow = 1’b0  

a = 3’b011 b = 3’b010 m = 1’b0     // (3+2=5) =>  result = 3’b101;  overflow = 1’b1   Overflow Error!

a = 3’b110 b = 3’b101 m = 1’b0     // (-2-3)=-5) => result = 3’b011; overflow = 1’b1   Overflow Error!

Your Testbench should clearly display the inputs and output results

=============full_adder.v====================

//full_adder.v

module full_adder
(
input a,b,ci,
output s, co
);

wire w1, w2, w3;

xor x1(w1, a, b);
xor x2(s, w1, ci);
nand n1(w2, w1, ci);
nand n2(w3, a, b);
nand n3(co, w2, w3);

endmodule

Two cables, both with conductor cross-sectional area 6 mm2, are connected in parallel across a common D.C. voltage of 21 Volts.

The resistivity of Cable 1 is ρ = 2.0 x 10-9 Ω.m at 20 °C, while the resistivity of Cable 2 is ρ = 3.0 x 10-9 Ω.m at 20 °C.

Cable 1 is 1348 mm in length.

If 43.2 % of the current passes through cable 1, determine the length of cable 2.

Assume the ambient temperature is 20°C

Consider the unity feedback negative system with an open-loop function G(s)= K (s^2+10s+24)/(s^2+3s+2).

a. Plot the locations of open-loop poles with X and zeros with O on an s-plane.

b. Find the number of segments in the root locus diagram based on the number of poles and zeros.

c. The breakaway point (the point at which the two real poles meet and diverge to become complex conjugates) occurs when K = 0.02276. Show that the closed-loop system has repeated poles for this K.

d. The break-in point (the point at which the complex conjugate poles meet and diverge to become real) occurs when K = 10.97. Show that the closed-loop system has repeated poles for this K.

e. Find the poles of the closed-loop system when K = 6.

f. Sketch the two segments of the root locus.

g. Check your work using MATLAB. It is not necessary to submit the output.

A sing-around sensor outputs frequency 40 Hz. Knowing that the average flow rate in the pipe is Q= 40 l/min and the pipe radius is 2cm. What would be the distance between the emitting and receiving wires?

Implement the synchronous 2-bit Up/Down counter  with saturation at the end states. The flip-flop outputs Q1, Q0 serve as the outputs of the counter.

The counting direction is set with mode control input M.

With M =1 the flip-flop outputs follow the incrementing binary sequence starting from a current state with saturation at state 11 as shown in the following example: 00-> 01-> 10-> 11-> 11-> 11...

With M =0 the outputs follow the decrementing binary sequence from a current state with saturation in state 00 as illustrated below:

11-> 10-> 01->00->00->00...

Obtain the state table, the flip-flop input excitation equations and implement them with any number of 2-to-1 multiplexers. Inverters can be used.

Obtain the counter schematic.

The number of transistors on microprocessors is doubled every 18 months. What are the problems that may arise form shrinking the size of the transistor

A Cockroft-Walton type voltage multiplier has 6 stages with capacitances, each having a value of 0.15μF. the voltage multiplier is supplied using a step u high voltage transformer with the secondary voltage at 250 kV(rms) at a frequency of 120 Hz. The load current to be supplied is 5 mA.
i. Sketch neatly this 6 stage voltage multiplier.
ii. Calculate the percentage ripple.
iii. Determine the regulation.
iv. Find the optimum number of stages for minimum regulation or voltage drop. The ripple factor and
v. Suggest how the ripple and regulation can be minimized.

Write a MATLAB code to obtain the following. Keep your code commented whenever required. Copy your source code and command widow outcomes and screen shots of any plots in your solution.

Write a user defined function ‘My_FunctionGen’. It accepts, the time vector ‘t’ with 8000 uniformly spaced values within the range of 0 to 8, Frequecy scalars ‘f1<100H’ and ‘f2<80Hz’ and Amplitude scalars ‘A1’, ‘A2’ and ‘A3’ as input arguments. It delivers x1, x2 and x3 and x4 as outputs and also generates plots, as shown in the following table. Where, x1, x2, x3 and x4 are defined as.

• x1= (A1+A2).cos(2πf1t)
• x2= A2.cos(2πf2t)
• x3= A3 times of a random vector of a similar length as that of vector ‘t’
• x4= Element by element division between x1 and x2

• Open Figure#8, split this figure as shown below and draw:

• Use axis function to properly display each plot. Also add, x-axis label, y-axis label, Title and Legend to these plots.
• Write an appropriate MATLAB code to call and test this function.

A manufacturing company operates two production lines.when both lines are operating,the production rate on each line is 500 units per hour.At this production rate on each line is 500 per hour.At this production rate the failure rate of line 1 is 3 failures per 8-hr day(CFR) and the failure rate of line 2 is 2 failures per 8-hr day.when one line fails.the production rate of the second line must be increased in order to make production quotas.At the increased rate of 800 units per hour,the failure rae of line 1 is 6 per 8 hr day and the failure rate of line 2 is 3 per 8 hr day.Find the MTTF and the reliability of the production system over a 1 hr and over an 8 hr production run.