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A wound-rotor induction motor is operating at rated voltage and frequency with its slip rings shorted and with a load of about 25 percent of the rated value for the machine. If the rotor resistance of this machine is doubled by inserting external resistors into the rotor circuit, explain what happens to the following:
determine the values of the external resistors for a 555 timer used as an astable multivibrator with an output frequency of 2 kHz, if the external capacitor C is 3.0 mf and the duty cycle is to be approximately 75%
A HCS12 ATD has been set-up to perform a right-justified, 10-bit, signed operation. What is the expected output for an input voltage of 3.09V The voltage range is 0-5V.5V/4096 = 4.88 mV.
if a 1mA movement has an internal resistance of 43 ohms, calculate the shunt resistance required to increase its range to 50mA and also 300mA.
Determine the transfer function and difference equation.
Find the system transfer function H(s) = Y(s)/X(s) if the input x(t) and the output y(t) of the system are related by the equation y(t) + 3y(t) = x(t) - x(tau)d tau. Assume y(0) = 0.
Find the final yield for a nine-mask-level process in which the average fatal defect density per cm2 is 0.1 for four levels, 0.25 for four levels, and 1.0 for one level. The chip area is 50 mm2.
A dc shunt machine is connected to 220 volt supply and is running at speed of 1200 r.p.m . its armature current is 60 amp and the torque of its shaft is 95 Nm . show whether the machine in running as a motor or generator.
An opamp based integrator is measured at 1KHz to have a voltage gain of -100 V/V. At what frequency is its gain reduced to -1V/V. And, what is the integrator time constant
how to write a VHDL or an ABEL or a Verilog program using Active HDL 6.3 Student Edition or Xilinx Student Edition 6.31 for a generic 3-to-8 binary decoder with active-high inputs and outputs but with only a single enable input.
Write a Matlab script to create a variable B containing 60 random numbers from 0 to 2. Next using a WHILE loop go through all 60 numbers and count the number of values of B that are below 1.4. Store this answer in the variable COUNT.
The Maximum Power Transfer Theorem for AC & DC Circuits with solved examples
a) what is the total resistance of the whole combination b)if the current passing through the combination is 4 amp.find thevoltage across the whole combination and in each resistor c)find the current in each resistor.
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