A 35 km, 34.5-kV, 60-Hz three phase line has a positive-sequence series impedance z = 0.10 + j0.40 Ohms/km. The load at the receiving end absorbs 15 MVA at 33 kV. Assuming a short line, calculate: (a) the ABCD parameters, (b) the sending-end voltage for a load power factor of 0.95 lagging, (c) the sending-end voltage for the a load power factor of 0.9 leading. (d) For which case is the sending-end voltage higher?

Determine the Nyquist rate for signal x(t)defined as follows:

x(t)= 20,000sinc(20,000*pi*t)

Plot the spectrum of the sampled signal and check whether aliasing error exists for the following values of the sampling rate (ws): 40,000*pi, 20,000*pi,10,000*pi

SUBJECT: CONTROL SYSTEM DESIGN (Simulink Model)

• What does the ‘Bias’ block do to the input sine wave? Describe it.

• What is a ‘Subsystem’ and why is it useful when developing a model?

• What does the ‘Gain’ block do? What does a gain value of 255/5 mean?

• What does the '1023' value do in the Arduino I/O subsystem?

• What does the gain value of ‘5/1023’? What is its relationship to an 8-bit digital wave?

PLEASE TYPE YOUR ANSWER

Design a decoder counter MOD '10' that counts from 0-9 using 4 flip flops and a NAND gate.

Write a literature review from any article concerning the "conversion of kinetic energy to electrical energy" make sure your literature review contains( name of research, problem statement,method,result/conclusion)

A single phase, 300???, 11??/2.2??, 60 ?? transformer has the following parameters referred to the high-voltage side: ?? = 57.6??, ?? = 16.34??, ??? = 2.784? and ??? = 3.5?. If a load of ????? = 16∠30°? connected to the low-voltage side: a) Find the voltage regulation? b) Draw the phasor diagram? c) Find the efficiency of the transformer? d) Repeat part a and b at ????? = 16∠ − 30°??

A 2000 V single-phase synchronous generator is being used as a backup
generator outside a diagnostic center. When the generator
terminals are short-circuited and a field excitation current of 2.5 A is passed, the
ammeter between the terminals read 100 A of full load current. If the terminals
of the same generator are opened and the voltage across them is measured using
a voltmeter, we get the value of 500 V with the same excitation current. The
armature resistance is 0.8 ohms.
Determine the voltage regulation of this generator if it is delivering 100 A
during normal operation with unity power factor, 100 A with 0.8 leading PF,
and with 0.71 lagging PF.
(Hint: Synchronous Impedance = (0.C Voltage) / (S.C Current))

15. Approximately, how many NAND gate equivalents does a SPLD (Simple Programmable Logic Device), CPLD (Complex Programmable Logic Device) and FPGA (Field Programmable Gate Array) typically support?

A 240 V DC shunt motor draws 40 A while driving a constant torque load. The armature resistance is Ra = 0.2 Ω, the field resistance is Rf = 240 Ω and machine constant is Ka = 120. The part of magnetization characteristic (field flux versus field current) related to the question is:

If (A) :      0.70 0.80 0.86 0.90 1.00 1.10 1.20 1.30 1.40

ϕ (mWb) : 5.80 6.30 6.59 6.70 7.20 7.60 7.96 8.20 8.45

The constant rotational loss is 240 W and the armature reaction is neglected. Find

a. the internal torque developed by the motor

b. speed    

c. efficiency    

A bandpass series filter has parameter values of R=150Ω , C=2μF and
L=3mH . The filter is energized with a voltage source which has an
internal resistance equal to 100Ω.
Using Matlab, write a code to print Bode magnitude plots for the filter transfer function by
itself and the transfer function of the filter modified by the source resistance?

Express the following two base 10 numbers in binary using the IEEE 754 single-precision floating point format (i.e., 32 bits). Express your final answer in hexadecimal (e.g., 32’h????????).

a) 68.3125

b) -19.675

Q1.

What is Laplace transform and why do we use it in circuit

analysis.

Design an application or problem using the derivative of a wavelength or form?

Why is Calculus important to Engineering?