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A dc motor is driving a constant-torque load. If the field voltage of the motor decreases by 20%, calculate the percentage change in no load speed.
A signals values have a range of +- 5V and you wish to make measurements with an analog quantization size no mate thatn 5mV. What minimum resolution A/D converter is required to perform this risk
If a man touches the chassis, compute the current through his body. Assume that the body resistance of the man plus his ground resistance is 1000Ω.
What current flows through an ideal capacitor if the voltage across the capacitor is constant with time? To what circuit element is an ideal capacitor equivalent in circuits for which the currents and voltages are constant with time?
Suppose f=20kHz and linear quantization is adopted. Calculate the PCM code when t0=10μs, maximum quantization error, the dynamic range, and the best and worst signal to quantization noise voltage ratio.
Design an Arduino Uno based 24VDC motor control circuit. The motor should start with the presence of a 5V signal, however it will have its own power supply.
A 50-KVA, 13,800/208 V -Y distribution transformer has an equivalent phase impedance 114.2+j800 ohm referred to the high voltage side. Take the rated voltage as the base voltage and the rated VA as the based voltampere value.
what horsepower is added to water to pump it vertically through a 200-ft-long 1.0-in.-diameter drawn tubing at a rate
A load is drawing 10 A rms when connected to a 1200 V rms supply running at 50 Hz. If the source is operating at a lagging PF of 0.9, calculate (a) the peak voltage magnitude; (b) the instantaneous power absorbed by the load at t = 1 ms
A single-phase load is supplied through a 35-kV feeder whose impedance is 95 + j360 ohm and a 35-kV:2400-V transformer whose equivalent impedance is 0.23 + j 1.27 ohm referred to its low-voltage side. The load is 160kW at 0.89 leading power factor..
1) If we did not use the two's complement system, how would we do subtraction? 2) How is overflow different from carry?
Later, the high side of the transformer is connected to a multi-meter with the low side left open. The meter registers a reading of 0.11 ohms. Afterwards, the multi-meter is connected to the low side with the high side left open.
assuming k>0 what is steady state the response of the above system due to an input of the form , x(t) = 2sigma(t)+u(t). where sigma(t) denotes unit impulse function and u(t) denotes unit step function
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