THESE QUESTONS ARE FROM THE SUBJECT POWER SYSTEM FUNDAMENTALS AND FROM THE TOPIC ELECTRICAL DESIGN OF OVER HEAD TRANSMISSION LINES AND MAKE SURE THAT YOUR ANSWER IS CORRECT

Problem-1

A single phase transmission line has two parallel conductors 1·5 meters apart, the diameter of each conductor being 0·5 cm. Calculate line to neutral capacitance for a line 80 km long.

Problem-2

A 200 km, 3-phase transmission line has its conductors placed at the corners of an equilateral triangle of 2·5 m side. The radius of each conductor is 1 cm. Calculate : (i) line to neutral capacitance of the line, (ii) charging current per phase if the line is maintained at 66 kV, 50 Hz.

Problem-3

A single-phase line has two parallel conductors 1 meter apart. The radius of each conductor is 0·5 cm. Calculate the loop inductance per km of the line

Q2) Having the text (A AA BACBCCBBAAADBBBC D), answer the following: 1. The probability of character A( P(A)) equals------- a) 1 b)0.1 c) 0.7 d) 0.35 The self-information of character C( I(C) Jequals------ 2. a) 2.321 bit b) 4.256 bit c) 1.336 bit d) 6.874 bit 3. If the average time t is 5 usec, then the information rate R(x) is-- a) 10.856 Mbps b) 9.486 Mbps c) 7561 kbps d) non of the mentioned

Design and simulate a triangle wave generator with f_o=1.5 kHz and V_o(pp) = 5V

please use online multisim

Question :01 Part A

The initial conditions of a d.c. motor are:
K’ = 3:0Vs
V1 = 24:0V
Td = 18Nm
Ra = 2 ohm
For a 50 percent increase in the armature voltage, calculate the percentage Change in the no-load speed. Assume that the load torque is unchanged.

Is the increase in speed proportional to increase in armature voltage give reson for your answer.
speed.

Part B:

A 50 V, d.c. shunt motor drives a constant-torque load at a speed of 1200 rpm. The armature and field
resistances are 2 ohm and 100 ohm, respectively. The motor draws a line current of 15 A at the given
load.
(a) Calculate the change in voltage to open the motor to holding position(holding position mean "Yes stopping motor electrically"). And plot the change in
speed with bith the voltages.
(b) Calculate the resistance that should be added to the armature circuit to reduce the speed by 50
percent.
(c) Calculate the resistance that must be added to the armature circuit to open the motor at the
holding condition.
(d) Plot all the resistance for change in speed.

use matlab

y(t)=10*(cos(2*pi*500*t)+cos(2*pi*1000*t)+ cos(2*pi*1500*t)).

e) Down sample y(t) by a factor of 6. Sketch the Fourier transform with appropriate frequency axis. Check if all frequency components are correct?

Up-sample the time-domain signal obtained in e) by a factor of 6. Use appropriate filter for interpolation. Sketch the Fourier transform of the up-sampled and filtered signal. Does the resulting signal show all frequency components of the original signal y(t)?

The signal output from a certain process in an industry is described by the following equation

h (t) = 5 cos 2π1000 t + 7 cos 2π 2000 t + 2 cos 2π 3000 t.

Suggest any two remedial measures to avoid any problems that occurred during the

reconstruction process.

THESE QUESTONS ARE FROM THE SUBJECT POWER SYSTEM FUNDAMENTALS AND FROM THE TOPIC ELECTRICAL DESIGN OF OVER HEAD TRANSMISSION LINES AND MAKE SURE THAT YOUR ANSWER IS CORRECT

Problem-4

Find the inductance per km per phase of a 3-phase overhead transmission line using 2 cm diameter conductor when these are placed at the corners of an equilateral triangle of side 4 meters.

Problem-5

The three conductors of 3-phase overhead line are arranged in a horizontal plane with a spacing of 4 m between adjacent conductors. The diameter of each conductor is 2 cm. Determine the inductance per km per phase of the line assuming that the lines are transposed.

In a localized capacitance method for a Long transmission line what could be consider a drawback from it? Also when a long transmission line is open circuited on its receiving end, would there be any current at the sending end?

From your previously gained knowledge of electronic elements (including introduced semiconductor elements), suggest which elements could be used for

a) Rectifiers (AC to DC converters)

b) Oscillators (DC to AC converters)

and explain why (i.e. which element properties are taken advantage of).

6.2

Simulation in MATLAB by command or Simulink is either fine!

1. Adding a PID controller

2. Increasing Kp gain, until the output tracks the input and begins oscillations

3. Adjusting Kp gain, for minimum overshoot

4. Adjusting Kd gain, for stability guarantee

5. Adjusting Ki gain, for error elimination, and record the final result with figure

Mention the controller gain value (Kp, Ki, Kd) that you used

Implement four blinking LEDs on your DE2 board. Your code should blink four LEDs at 100 Hz, 10 Hz, 2 Hz and 1 Hz respectively. For each of the blink frequencies, the LED should be set to a 50% duty cycle (ON for half of the time). This design should be made in Quartus as a behavioral VHDL design.

combinatioal & sequential circuits in computer application

i want to remove this question please refund this i don't want answer.of this it was typed by mistake