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A commutator motor with its armature supplied from variable voltage source. As the voltage is varied from 0 to 600V,the drive speed varies from 0 to 1600rpm, the field flux isconstant, all losses-ignored.a) determine armature current if load torque is constant at420 N . mb)a load is driven in the speed range of 1600 to 4000rpms. the armature V is constant at 600V. Determine torque available at maxspeed if the armature current of part (a) is not to b eexceeded.
Design a tunk circuit with resonant frequency of 10 kHz and bw of 500 Hz. show your design equation, then use a circuit simulator package to prove your design is correct. you must attach both your design calculation and computer output.
A three-phase, wye-connected, 400-V, four-pole, 60-Hz induction motor has primary leakage impedance of (1+j2) ohms and secondary leakage impedance referred to the primary at standstill of (1+j2) ohms.
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.
Write a 4-bit up counter. Your counter has a asynchronous clear and when the clear is activated, the counter is reset to 3. The count range is from 3 to 9.
A combinational logic circuit has 18 binary inputs. Assuming it takes 50 ms to input one test pattern and record the circuit's output, how long will it take to do an exhaustive test
Assume that capacitor is completely discharged when t
Consider a GaAs MESFET. When the device is biased in the saturation region,Id=18.5 micrroamp,Vgs=.35 and Id=86.2 micro amp,Vgs=.5 determine the conduction parameter and k and threshold voltage Vth
If the work output is 10kW, find the required heat transfer rate from the high to the low temperature source, and the required heat transfer rate to the low temperature source. What is the themal efficiency of the engine
Older versions of CMOS devices may have had input gate capacitances of 10pF, logic levels of 0-5V, and propagation delays of 10 ns. With smaller physical sizes, the same function might have an inputgate capacitance of 2 pF and operate at logic lev..
A DC electric motor draws a current of 8 amps, at a voltage of 50V. The efficiency of the motor is given as 60% at a a spindle speed of 400 rpm. Calculate the torque produced by the motor.
A 440-V three-hase Y-connected synchronous motor has a synchronous reactance of 1.5 ohms per phase. The field current has been adjusted so that the torque angle is 28 degrees when the supplied power to the motor is 90kW.
A tollgate (vending machine) controller accepts only nickels (5c), dimes (10c), and quarts (25c), and generates control signal to actuate the lever to open the tollgate (or dispense a chosen item in case of vending machine) once 35c or more are re..
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