for the unity feedback system, the open loop transfer functions is
G(s)=K(s+2)(s+3) / (((s^2)+2*s+2)(s+4)(s+5)(s+6))
a. sketch the root locus (detail step wise)
b. find the jw-axis crossing and the gain. K, at the crossing

Design a 4-to-16-line decoder by using the minimum number of 2-to-4-line decoders. The 2-
to-4-line decoders have an enable input (‘1’=enabled) and the designed 4-to-16-line decoder
does not have an enable. Name the inputs A0...A3 and the outputs D0...D15.

A DC shunt motor is designed without compensating windings. If there is no compensating winding then the effect of armature reaction will exist. What effect does armature reaction have on the torque-speed characteristic of a shunt DC motor? Explain mathematically in detail. What can be done to remove this problem completely?

1, Sketch a second order LC filter, determine the transfer function and the cut-off frequency

2, Explain the 6 classification of filters

Re-submission of question. Consider the full-bridge Single-phase inverter with input voltage equal to 200V. This inverter is controlled by Sinusoidal PWM technique with amplitude modulation index equal to 0.5 to generate a 3-level half-wave symmetry with frequency equal to 50Hz. (a) Draw its power circuit [solved by an expert] (b) Obtain its switching table [solved by an expert] (c) Calculate the width of each generated pulses at the output [solved by an expert] (d) Calculate the RMS value of output voltage [solved by an expert.] (e) Calculate the amplitude of fundamental frequency ( Not solved ) (f) Draw the waveform reference and carrier signals [Not solved ] (g) Obtain the waveform of output voltage [Not solved ] (h) Design the trigger signals of switches [Not solved ].Hoping to have the remaining answers.Thank you.

Draw the equivalent circuit of a transmission line and hence write the transmission line equations for an elemental section of a transmission line.    

Electromagnetics

Question B1.

(a) A generator with Vg = 300 V, and Zg = 50 Ω is connected to a load ZL =75 Ω through a 50-Ω lossless transmission line of length, l = 0.15λ. Determine the,

(i) Zin, the input impedance of the line at the generator end;

(ii) input current I i and voltage Vi ;

(iii) time-average power delivered to the line, = 0.5 x Re{V .I*};

(iv) load voltage VL, and current, IL; and

(v) the time-average power delivered to the load, = 0.5 x Re{VL .IL*};how does compare to ? Explain?

(vi) compute the time average power delivered by the generator, Pg , and the time average power dissipated in Zg . Is conservation of power satisfied?. [12 marks]

(b) A team of scientists is designing a radar as a probe for measuring the depth of the ice layer over the antarctic land mass. In order to measure a detectable echo due to the reflection by the ice-rock boundary, the thickness of the ice sheet should not exceed three skin depths. If ε' = 3 a n d ε'' = 10-2 for ice and if the maximum anticipated ice thickness in the area under exploration is 1.2 km, what frequency range is useable with the radar? [6 marks]

(c) A 0.5-MHz antenna carried by an airplane flying over the ocean surface generates a wave that approaches the water surface in the form of a normally incident plane wave with an electricfield amplitude of 3,000 (V/m). Sea water is characterized by μr = 1, εr = 72, and σ = 4 S/m. The plane is trying to communicate a message to a submarine submerged at a depth d below the water surface. The submarine’s receiver requires a minimum signal of 0.01 μV/m amplitude, what is the maximum depth d to which successful communication is still possible? [7 marks]

The Views options of the insert component dialog box allows you to insert components symbols in a drawing

A. inline with connectors

B. above or below the wire

C. with or without text

D. with or without JIC symbols

full and elaborate theory regarding induction type Instruments

12.5.1 - What bit in the TBxCCTLn register is used to put the CCR system into capture mode?

Question 1 options:

12.5.2 - What bits in the TBxCCTLn register are used to control the edge polarity that triggers a capture?

Question 2 options:

12.5.3 - What bits in the TBxCCTLn register are used to select the source for the capture triggering signal CCI?

Question 3 options:

12.5.4 - How can a capture event be generated by software?

Question 4 options:

A Si pn junction has a circular cross section with a diameter of 10 μm. This junction
has Na = 1018 cm-3 on one side and Nd = 5 x 1015 cm-3 on the other. Calculate Xn, Xp,
Q+ (total charge on n side), and E for this junction at equilibrium (300 K). Sketch E(x)
and charge density to scale.

Describe the advantages of pulse width modulation (PWM) switching for the inverter control. Then state 3 types of PWM switching scheme available.

Please give brief descriptions and examples with diagrams on
TXCVR
TYPES OF COMMON FILTERS
BER VS POWER RELATIONSHIPS IN DB SCALE

A sinusoidal voltage is given by v(t)=7 cos(172t+28^o) V. What is the first time in ms for t>0 for which v(t) has a zero crossing?

Solve the following system :

w ′ + y = sin x

y ′ − z = e^x

z ′ + w + y = 1;

w(0) = 0, y(0) = 1, z(0) = 1