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A three-phase induction motor is wound for four poles and is supplied from a 50 Hz system. Calculate:
(a) the synchronous speed;
(b) the speed of the rotor when the slip is 4 per cent;
(c) the rotor frequency when the speed of the rotor is 600 r/min.
Describe, with the aid of diagrams, the electric drive system of your practical or researched system - discuss in detail each of the following elements of electric motor drive systems,
The voltage across an element is v(t) = 5e-7t V. The current entering the positive terminal of the element is i(t) = 1e-6t A. Find the energy absorbed by the element in 0.038 s starting from t = 0.
(b) Construct a 3-input-8-output binary decoder using NOT, AND and OR gates (without enable logic). (c) Using the above decoder, design the following logic function. Add the required gates and re-draw the decoder.
A small circular parabolic reflector, often referred to as dish, is now being advertised as a TV antenna for direct broadcast. Assuming the diameter of the antenna is 1 meter, the frequency of operation is 3 GHz
Explain charge sharing in dynamic circuits. For a 3-input dynamic NAND gate, discuss charge sharing, and explain the design requirements under which the gate operates correctly in the presence of charge sharing.
An Ideal Low Pass Filter: The impulse response of an ideal low-pass filter is h(t) = sin(t)/t (or the sinc signal). (a) Given that the impulse response is the response of the system to an input x(t) = f(t)with zero initial conditions
In the differential amplifier shown in the schematic, R1 = R2 = 10 k ohm; R3 = R4 = 100 k ohm. Assume the ECG voltage at V1 = 100 mV, and the ECG voltage at V2 = - 100 mV. There is a power line interference of 200 mV at both input sites.
During each revolution of the cam, a follower rises and falls 20 mm. During each follower up-stroke, the follower resists a constant force of 500 N. During the downstrokes, the force is negligible. The inertia of the rotating parts (including a sm..
Maximum value of frequency deviation is fixed at 75 kHz for commercial broadcasting by radio. Modulation frequency W = 15 kHz, then find the transmission bandwidth of signal and deviation ratio.
1- Draw a circuit whose output goes to + V sat . When the input signal is below -4V. the output should be -V sat, when the input is above - 4V 2- Design a - 90 phase shift circuit at 1590 Hz , Then for your design calculate 0 at 15 Hz, & 15 KHz
Using VHDL, define a module called "mux 4 to 1" which implements a (4:1) multiplexer. The module should take in 4 data inputs called D3, D2, D1, and D0, and two select inputs called S1 and S0. It should have a single output called Y.
If the voltage across a capacitor is a square wave, predict the resulting current waveform (draw the voltage and current waveforms). Repeat the process when the voltage across the capacitor is a sine wave.
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