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A transformer costing Rs 90,000 has a useful life of 20 years. Determine the annual depreciation charge using straight line method. Assume the salvage value of the equipment to be Rs 10,000.
A portable battery supplies electricity to an external circuit for 2 hours. The voltage across the terminals of the battery is observed to increase from initial voltage of 5V to 10V (linearly) and the current increases from 1A to 2A (linearly) in ..
Received power of half-wave dipole antennas, Assume that two antennas are half-wave dipoles and each has a directive gain of 3dB. If the transmitted power is 1W and the two antennas are separated by a distance of 10 km, what is the received power?
Design a high-pass op amp filter with a high-frequency gain of -100 and a cutoff frequency of 1kHz. Resistors with values of 1kohm, 10khom, and 100kohm are available. Determine the capacitance and resistance values of the filter.
The circuit arrangements for each of the installations, the final circuit cable selection, the maximum demand estimation, and the circuit protection arrangements should be designed.
An AAC is composed of 37 strands, each having a diameter of 0.333cm. Calculate the DC resistance in ohms per km at 75oC. Assume that the increase in resistance due to spiralling is 2%.
Problem 1: Antenna gain is usually given in relation to an isotropic antenna (radiating/receiving equally in all directions). It can be shown that the effective area of such an antenna is Aiso = λ2/4π.
A three phase star connected load is connected across a three phase balanced supply system. Obtain a set of equations relating to symmetrical components of theline and phase voltages.
Why star delta starter is preferred with induction motor? State the difference between generator and alternator. Why AC systems are preferred over DC systems? How can you relate power engineering with electrical engineering? What are the various kind..
Consider points P(2,4,3) and Q(1,-5,2) in three dimensional space: Find the position of vectors r1 and r2 for P and Q in terms of unit vectors i,j,k Determine graphically and analytically the resultant of these position vectors Hint: resultant vector..
A transducer produces a sinusoidal waveform with an amplitude of 2.5 VPK and a DC offset of 0 VDC. The ADC input signal range is 0 V to 5 V. Describe the signal conditioning circuit that is needed to use the full-scale range of the ADC.
The same cube as in (a) is placed in the first quadrant with one corner at the origin and with its sides parallel to the system of coordinates. Calculate the total force acting on the body
Consider an NMOS transistor having kn=10mA/V2. Let thr transistor be biased at Vov= 0.5V. If a 0.05-V signal is superimposed on VGS, find the corresponding increment in collector current by evaluating the total collector current iD.
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