Electrical Engineering Questions and Answers May 19, 2021

Difference between even, odd, periodic, non-periodic, impulse step and ramp function time scaling , time shifting , sampling, contization.

A dipole antenna dimensions has been designed to operate in 65MHz. Will the same antenna work properly if frequencies a) 130MHz b) 195MHz are used? Your answer should include the current distribution and impedance variation along the length of the antenna and how those are affected when frequencies of 130MHz and 195MHz are introduced. Also,

Debine the Zener diode also Cind orkiag cad cotput chancteestics of z enev dinde describe The ConstrvcTion, wor e with the help of digprom

Use the Fllwiny jiven. CNcuit belaw and Bdc 300, Cakuale Ie, Ic 2k2 VCE Ond Po. Lma VEE Lov lov 1

characteristioa Descnbe the JEET openting aso dexaibe the DMOSFET Constroction Qnd bete doyhm. operatin with h help of with the help ot

The acceleration of a Maserati is proportional to the difference between 250 kmh and the velocity of this sports car. If this machine can accelerate from rest to 100 kmh in 10s, construct the differential equation that represent this relationship. Do not solve the equation.

In each of the following, eliminate the arbitrary constants (a) a sin y y c (b) 32 ry A sin (ot B) o a parameter, not to be eliminated (d) Y cie cze (e) y mx C (c) x h m

2, x 0 Verify that the piecewisedefined function y 2, x20 is a solution of the differential equation ry 2y 0 on (0, 0). Obtain the differential equations of the family of plane curves described as (a) straight lines through the origin (b) circles with center on the raxis (c) circles with fixed radius r, tangent to the raxis (d) parabolas with

Match each letter(s) of the given differential equations with one or more number(s) of these solutions (a) y 0 (b) y 2 (c) y 2x, (d) y 2 (1) ry 2y (2) y 2y 4 (3) y 2 (4) xy y (5) y 9y 18

Find I in the circuit 05 Figure Jae

15 V, 20 Sinwt 600) and V2 20 sin(ut s0) Fred V, tV2

5 Vo Tage V 12 cas (l0ot 50) is applied to a SomF Capacita Calculate. Te Curent Throyh The capacilor. F

What would be the Difference Energy E, for the following systems. JES. Select one a. Eg 4 E, E, 3 E, . E, 2 E, d. E, E, b.

One of the methods to minimize the ISI in base band BIT transmission is to use Select one a. Orthogonal functions O b. Low Pass Filter C. Raised Cosine Filter d. Cosine Transform

All of the given below are types of the PCM system except Select one . BipolarRZ Ob. Manchester . NRZ d. Pulse position modulation (PPM)

For the following base functions, ,(t), 2(t) given below 2. 2 3 Then p, (t).p2(t) are Select one Orthogonal No enough information to calculate NonOrthogonal Orthonormal

4. Let K be any field, and let S nomial ring in the m indeterminates over K. KX1, X2,. Xm denote the poly (1) For any (a,..., am) E KM, let Ma....am be the ideal (Xa,..., Xm am) of S. Show that Ma,..., am is a maximal ideal, and that Ma,..., am if and only if f(a,..., am) 0. (2) Let R KY, ... , Yn, and define the Kalgebra homomorphismo R S

The relation d14o would be in 20. other word represented as Select one E No a. 1 2E, 2V N, b. 2E, V No 1 2E, 2 V No d.

The forward path transfer function of a control system with unity feedback is K s(s a)(s 30) G(s) where a and K are real constants. (a) Find the values of a and K so that the relative damping ratio of the complex roots of the characteristic equation is 0.5 and the rise time of the unitstep response is approximately 1 s. (b) With the values a and

1. Find a function whose square plus the square of its derivative is 1. (5 pts) dy 2. Can any solution of dr v(4) 3 cross the raxis Do you think that 1 is an dy implicit solution of the IVP 0 (10 pts) da 3. Construct a lincar firstorder differential equation for which all nonconstant solutions approach the horizontal asymptote as y 4 as a 0. (5

Another equation that has been used to model population growth is the Gompertz equation dy dt ky In(Ky) , where k and K are positive constants. For each y in 0 y K, show that dy dt is never less than dydt given by the logistic equation dy k 1 K

Find the solutions of the differential equations (a) (x y) dr (3r y) dy 0 y(2) 1 (b) (r cosa v) dar ady 0 y(1) 7 (c) (3 2f)y 2ay y(0) 1 3D

1. In each of the following, eliminate the arbitrary constants (a) sin y y e (e) 2 A sin (st B) is a parameter, not to be eliminated (d) y get cze (e) y c (b) 3 r m 2. Verify that the piecewisedefined function y , z 0 is a solution of the differential , r20 equation ry 2y 0 on (x, 0).

Determine the real power, apparent power, and power factor (PF) for each of the following circuits of Fig.02. VA 12 V X 100 1 X 150 f R 100 Fig.02

8.Find scattering matrix of following network. Also comment about reciprocity and find whether lossless or not. where X150 and X2100. Zc 9.Use SFG to find overall reflection coefficient at input and output. Take source and load impedance to be 50 92. 0 0 0.4445. V N 0 8.560 Zc 50 52 10. A fourport network has the scattering matrix shown as

A multipath channel includes five paths with powers P1, P2, P3, P4, and P5 Watts. The corresponding delays are 1, 2, 3, 4, and 5 sec, respectively. If the signal bandwidth is 200 kHz, is the channel flat or frequency selective?

A hypothetical semiconductor has an intrinsic carrier concentration of 1.0 101cm at 300 K, it has conduction and valence band effective densities of states N. and N, both equal to 101cm. 3 (a) What is the band gap E, (b) If the semiconductor is doped with Na 1 1016 donorscm, what are the equilibrium electron and hole concentrations at 300 K (c)

Electrons in some semiconductor have a density of 10^20 cm-3 and electron mobility of 800 cm/V.s. If a uniform electric field of 1V/cm exist across this conductor then determine the electron current density.

For a Si bar of length 5 mm, doped n-type at 10^15 cm-3, calculate the current density for an applied voltage of 2.5 V across its length. How about for a voltage of 2500 V? The electron and hole mobilities are 1500 cm2/V@s and 500 cm2/V@s, respectively, in the ohmic region for electric fields below 10^4 V/cm. For higher fields, electrons and holes

What are the different types of capacitance seen in PN junction diode ? Briefly explain about junction capacitance. Find the junction capacitance of a Si p-n junction at T = 300K with doping concentration of Na=10^17 /cm in p-side and Nd = 10^15/cm in n-side. Assume ni=1.5x10^10 /cm and reverse bias voltage V_{r} = 5V . Assume cross sectional area

Just before the start of a recent season, the Toronto Maple Leafs announced the long-term signing of Mitch Marner, one of their top players. The news clipping excerpt from the Toronto Star, below, contains details (in bold) of the contract salary payments. If you assume the contract starts today and the Maple Leafs expect to earn 2.5% if they

Without using the straight forward procedure for determining the complex exponential Fourier series coefficient, using the differentiation property and other relevant properties, determine the complex exponential Fourier coefficients of the following signal (5) 7 2 2. 4

Design a digital system for smart car parking having capacity of 16 parking lots. After each car enters in parking, the count should be incremented by one. After parking of all 16 cars count should go to zero and an indication of parking full is to be given. Note the following while solving: 1)Solve the design problem step by step. 2)Implement the

(i) Obtain the complex exponential Fourier series representation of the signal x(t) 3 5cos(2rt) 7sin(3rt) and determine fundamental frequency of x(t) H.W Fundamental frequency fo 1T Cn Average Power (ii) For the above problem, determine the trigonometric Fourier coefficients.

Find the FT of triangular pulse x(t)

Make up a function F(t)that is of exponential order but where f(t) F(t) is not of exponential order. Make up a function f that is not of exponential order but whose Laplace transform exists.

Fourier Series If x(t) and y(t) are periodic with the same period and have FS coefficients (x) and respectively, then a linear combination of the signals, Ax(t) By(t) has FS (x) coefficients Ac Bc) What if the signals have different periods, such as(T1and 2T1, then what is the period and the FS coefficients of Ax(t) By(t)

. Determine whether each of the following signals is an energy signal, a power signal, or neither (a) xn un (b) xn (0.3)un (c) x(t) aeNat (d) r(t) tu(t) u(t 2), 0

Determine the parameter of the two-part network shown in fig. below

Detemine tu Yparamet 7 te two pat netwak Shown in Fis. below

Explain in details,

Please explain in details, and I dont want answers copied from other WEBSITES ANSWERS. Thanks 1 2 You have a random sample of five from the PDF f(x) e. Calculate the probability that the second largest of the sample will be at least 1. X and Y are independent random variables. fx(x) 1, 0 0.5.

Solve the following Equation

f AM (t) Ac cos wct m Ac f (t) cos wct 2m Ac f(t) cos Haider AlHaaj WOL HW Cown

1 Define T.L. 2 State types of mode which propagate in T.L 3 Deduce the formula of propagation constant, Y 4 Deduce the formula of CC impedance, Zo

Homework 1) Compute the spectrum for the above samples which are taken for one period 2) Sketch the spectrum from the obtained values of c if the analog frequency is 1 kHz and sampling frequency is 5 kHz didntkak 2 6 2 1 12 12 0 4 6 n

At 900 C titanium tetrachloride vapor reacts with molten magnesium metal to form solid titanium metal and molten magnesium chloride. Part A Write a balanced equation for this reaction. Part B What is being oxidized, and what is being reduced? Part C Which substance is the reductant, and which is the oxidant?

An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 130 lb and 191 lb. The new population of pilots has normally distributed weights with a mean of 139 lb and a standard deviation of 28.4 lb. a. If a pilot is randomly selected, find the probability that his weight is between 130 lb

Find the area K of the triangle specified below. a 5, b 16, c 19 The area K is square units.

Select the folder that cantains divers for your hardware. Search for driver software in deltep K HAHP Compaq dc7800p S Faststone GTA NEW HP Compag dc7800p Small Form Factor Hat PDisplay MEDIA SoundMAX Integrated Digital HD Audie Include subfolders Let me pick from efolder Dowonload Drivers from httpseasydrivers21.blogspot.com Pelormance re E

Direction 1. Form a group of 3 and perform the simulation below PROBLEM 1 Considering the positional sketch below, design the equivalent electropneumatic circuit in FLUIDSIM where the cylinder will only extend and retract after 2seconds. The whole process must be repeated 4 times. Positional Sketch 00 Contol Panel H I 0 Note 52 initially energized

Explain why networked information is more vulnerable to cyberattacks. Mention some of the methods used to keep networks secure. The safety of a companys network is a top priority for everyone. The Internet has brought up a number of security concerns. List some of the dangers that come with using the Internet and other massive networks. Describe

Discussion 1) Sketch the resulting AM signal from the oscilloscope. 2) From the observed AM signal calculate value of the modulation index, m. 3) Determine values of the total power, Pr, and side band power, Psa 4) What is the maximum value of the AM signal efficiency 5) Find the range of the cut off frequency faut of the LPF used to receive the

1) Sketch the resulting DSBSC AM signal from the oscilloscope. 2) Determine values of the total power, PT, and side band power, PSB 3) What is the maximum value of the DSBSC AM signal efficiency 4) Find the output signal expression from the coherent receiver if the local oscillator have phase shift of 0. 5) Compare between DSBSC and DSBLC AM

For the design of drainage, assume the coefficient of runoff, assume the time of concentration, use the rational method, and use the intensity of rainfall formula of i3300 t 19 (mmhr). Assuming that the location of the outfall pipe will be on the river, you may use circular, trapezoidal, or rectangular concrete pipe for the lined canal and the

DISCUSSION 1 Calculate the values of frequency constant Kf for each value of Vm 2 Find the values of phase constant for each value of Vm F.M. Receiver 1 Limiter

DISCUSSION PROCEDURE 1 Connect the cct. And sketch the OP from limiter and L.P.F. 2 Find the message signal frequency and gain from the readings. DISCUSSION 1 Find the output signal spectrum. 2 Calculate the signal OP power. 3 Find the range of the LPF that works with the F.M. signal.

Bit error detectioncorrection a) Explain 2D parity discussed in the link layer. Use an example to show how it works. b) How many bit errors can this parity detect and how many can it correct Why Double click to zoom

Find the Thevenin equivalent at terminals ab of the circuit in the figure. Take V 12.5 V. 0.25 vo Vs 6 ww 392 292 www. The Thevenin equivalent resistance Rth is The Thevenin equivalent voltage Vth is o a b 2 (Calculate to 2 decimal places) V (Calculate to 3 decimal places)

If the third order tensor Sijk is known to be symmetric, and Sijk Xeijk what is the value of A

EXAMPLE 2.8. For a pulseamplitude modulated (PAM) transmission of voice signal having maximum frequency equal to fm 3 kHz, calculate the transmission bandwidth. It is given that the sampling frequency f, 8 kHz and the pulse duration t 0.1T,.

The principle aim of this practical is for you to see and learn to recognize the major division of land plants. The questions below are designed to focus your attention on key traits of each of the divisions. Many of the questions ask you to describe what you see in the lab and the garden. Making observations and describing these observations is a

4. One hundred voice sources are multiplexed at an ATM access buffer. Each voice source has an average talk spurt length of 0.8sec. Its average silent interval is 1.2sec. (a) What is the probability that a voice source is in talk spurt (b) When in talk spurt, a source generates ATM cells at the rate of 100 cellssec. Find the link capacity C, in

Write a proposal about the Telecommunication research About UMTS?

3. Consider the causal linear shiftinvariant filter with system function 10.87521 (10.2z0.9z)(10.7z) H(z) Draw a signal flow graph for this system using (a) Direct form I (b) Direct form II (c) A cascade of first and secondorder systems realized in direct form II (d) A cascade of first and secondorder systems realized in transposed direct form II

The sound intensity at a distance of 16 m from a noisy generator is measured to be 0.25 W/m2. What is the sound intensity at a distance of 28 m from the generator?

1. Create Angular project as _Mid2017 2. The Angular application should display the following data and the last item Your Name should be replaced with actual name a. Fields - ID, Product Name and Product Description 3. Create appropriate components, type scripts files and etc. 4. Display a star (*) symbol next to Your Name and youve to follow

Electronic Store Product List ID Product Name Product Description 1iPhone X Say hello to the future 2 iPhone 8 iPhone 8 introduces an allnew glass design. 3 iPhone 7 iPhone 7 introduces an allnew glass design. 4 iPad Air Learn, play, surf, create, iPad gives you the incredible display, performance. Your Name This is Cool.

Assume the encoder (3,4,2) or, encode the sequence [1 0 1]. If the word [0 1 0 1 0 1 1 0 0] decode is received, how many errors does it have?

1) For the circuit below, VDD 3V, Ipc 1 mA, RL 1 mA, R 1 kN, Rs 25 N, R 9.1 kN, kp 9.6 mAV, VBE,T1 0.75 V, VA.T1 00, VTH,p 0.7 V, Ap 0.4 V,VCE,sat 0.6 V, 90, and VT 26 mV are given. Coo is a very large coupling capacitor. a. Given the DC voltage Vo b. Find the value of Rc. c. If the BJT is in deep saturation, what should be the value

Design Task You have to design a communication system to transmit a sinusoidal message signal of audio frequency range. You have to pick one of the carrier types (sinusoidal or pulse). Thereafter you have to select one of the main modulation schemes, followed by one of the specificsub modulation types within that category (if applicable). The main