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The secondary winding of a transformer has a terminal voltage of vs (t) = 282.8 sin 377t V . The turns ratio of the transformer is 50:200 (a = 0.25). If the secondary current of the transformer is (t) = 7.07 sin (377t - 36.87°) A , what is the primary current of this transformer? What are its voltage regulation and efficiency? The impedances of this transformer referred to the primary side are
Req = 0.05 W RC = 75 W
X eq = 0.225 W X M = 20 W
What is the resistance of an annealed copper wire that has a length of 500m and a diameter of 0.5 mm. How a diameter two times smaller affects the resistance.
Your new assistant has measured the signal coming from a piece of test equipment, writing v(t) = Vxe(-2+j60)t, where Vx = 8-100V. (a) There is a missing term, what is it and how can you tell it's missing (b) What is the complex frequency of the si..
A constant current of 3 A for 4 hours is required to charge an automotive battery. If the terminal voltage is 10+ t/2 ,where t is in hours, a) How much charge is transported as a result of the charging
A disk located at 0
In a 2-pole, three-phase PMAC drive, the torque constant and the voltage constant are 0.5 in MKS units. A constant torque of 5 Nm is developed to bring the system from rest to 5000 rpm in 5 seconds.
A long thin wire with a linear charge density wavelenght/2 runs through the center of the cylinder. Find an expression for the elcetric field and the direction of the field at each of the following location a)r >R
design a receiver e.e. determine the block diagram that will detect the data on a qam waveform having an m 16-point
A CG amplifier when fed with a signal source having Rsig = 200 ohms is found to have an overall voltage gain of 10V/V. When a 200 ohm resistance is added in series with the signal generator the overall voltage gain decreased to 8V/V.
Write a program to create an array initialized with Hex digits in the ROM space. The main code should copy this array to a different array in the RAM space.
Given a four-volt peak to peak square wave, calculate the mean-square error in approximating the wave by only its fundamental sinusoidal component. Assume the average value is zero (no DC offset).
Expand the memory unit to a 32x4 RAM using two 7489ICs ( you might use the HM6116A120 chip for the Multisim Program Simualtion). Use the CS inputs to select between the two ICs. Note that since the data outputs are 3-stated
A pn junction diode and the base-emitter junction of an npn BJT have the same physical structure and doping level. The twoare connected in parallel and energized to the same voltage. If the diode current is 5mA and the BJT has a β of 50
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