Electrical Engineering question and answers for July 20, 2023
- Q What are the pros and cons of a continuous mode buck converter?Give suggestions to improve it.
- Q Explain the operational principle and topologyof  BLDC motor in maximum 3 pages.
- Q Consider a 1550 nm laser diode with a rise time of 0.8 ns,spectral half-width of 6 nm, that launches 2 mW optical power intoa 60 km long single-mode fiber with...
- Q Mention two uses for the current sources in analog integratedcircuits?
- Q A100MVA, 400 delta / 11Y kV, 3-phase transformer has Z(eq) =0.02+j0.05 ohm per phase referred to the low-voltage side, and R(c)= 1800 ohm per phase referred to the high-voltage side....
- Q distinction between active and real power?distinction between complex and apparent power?distinction between effective and rms value of a voltage orcurrent?what are three applications of transformer?
- Q how to use routh array find out the number of poles onthe rhp, lhp and jω-axis?
- Q A paraboloidal reflector has an f/d ratio of 0.38.Determine:a) Which symmetrical feed pattern will maximize its apertureefficiencyb) The directivity of the reflector when the focal length is10\lambdac) The value of...
- Q Use resources to express the latestadvancements and trends in digital technology.Explore the latest advancement in digitaltechnology.Explain any Application or technology which is gettingused today very widely.This Assignment should be completed...
- Q create a VHDL program for the Truth Table below. Please makesureto create your code for the simplified circuit.ABCZ00000011010101101001101111011110
- Q With the aid of a labelled diagram, compare the spectralcharacteristics of a DFB Laser Diode, a FP Laser Diode and a LED.Hence, select the device as the best candidate as...
- Q 18) For the network 192.168.140.68/27determine:a) Â Â Â All thesubnetsb) Â Â Â Addressrangesc) Â Â Â Host rangesd) Â Â Â Network IDse) Â Â Â Broadcastaddresses
- Q Determine whether each system is LTI, causal and/or stable andwith or without memory. Justify answers.a) y[n + 1] + 4y[n] = 3x[n + 1] - x[n]b) y[n] = nx[2n]
- Q The voltage and current at the terminals of a network arev=30+56cos2000t+20sin8000tV,i=3+5cos(2000t−25∘)+sin(8000t+45∘)A.The current is in the direction of the voltage drop across theterminals.Part AWhat is the average power at the terminals?Express...
- Q A balanced three-phase delta-connected source has a line veltageof 120 V. It is connected to a load via a three-wire transmissionline. The per-phase impedance of the delta-connected load is 30...
- Q A positive integer m is created so that its digit sum is 900 andwhen m is doubled, its digit sum does not change. The digits of minclude at least one...
- Q explain how a capacitor stores energy as anelectrostatic charge. also draw a couple pictures
- Q A 20MVA, 11kV/132 kV, star-delta transformer is being protectedby a biased differential protectionsystem. The transformer is supplied from 132 kV grids and on fullload operation. Determine thesuitable CTs ratio at...
- Q 1. Design and implement a 4 bit binary to excess 3 codeconverter using CMOS transistors. (Note: Students areexpected to design the circuit with truth table, solve the outputexpression by use...
- Q A binary data stream 111010010 is to be transmitted usingDPSK. Determine the encoded data and phase of the DPSK o/p .
- Q Several reports show the drawbacks and ineffectiveness operationof fuses and circuit breakers in the power lines. From youropinion, justify their potentials to protect equipment againstvoltage surges. Any disagreement shall be...
- Q Give the energy band description of conductor, semiconductor andinsulator. Why are the valence electrons so important in thematerials?
- Q Plate values of a three-phase transformer are given below:1600 kVA, 15 kV / 0,4 kV, 50 Hz, i0 = 1.2%; ukN= 6%, idle losses2450 W, rated power copper losses 14500...
- Q Question 5b) Determine the value of the current I1,I2,I3 and I4 indicated onthe diagram below;CR[10marks]c) A capacitor C is connected in series with a 40 Ω resistor acrossa supply of...
- Q In Microcomputers, address 0X345E, what does the \"X\" mean?Similarly, address \"0FFFFh\", what does the \"h\" mean?
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