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A 120 kVA transformer is to be parallelled to a 60 kVA transformer. Each transformer has rated voltages of 10kV-120V at 60Hz.
Tranformer 1, parameters referred to primary:Rc=250k OhmReq=25 OhmXm=45k OhmXeq=150 Ohm
Tranformer 2, parameters referred to primary:Rc=400k OhmReq=30 OhmXm=90k OhmXeq=300 Ohm
When supplying a 250A load at 0.85 PF, what is the total input current and power factor if the output terminal voltage is 125V?
Voltage regulator utilizes a 500 mW Zener diode with Vz=6.7V at 20mA, rz=lOohm and IzK=5mA. The supply voltage y+ has a nominal value of 12V but can vary by ± 1 V. The load resistor is fixed at 330ohm
For each one of the 3 frequency responses, H(f), in parts (a), (b), and (c) do the following: i. Obtain the system's impulse response, h(t). ii. Indicate if the system is BIBO stable or not, and state why. iii. Indicate if the system is causal or not..
a) Design a minimum two-level NOR-gate network to realize the above function. b) Design a minimum three-level NOR-gate network to realize the above function.
The dimmer knob is adjusted such that it applies voltage to the load during the initial 28 % of each half cycle of the standard 120V/60 Hz AC voltage. Find the real (average) power dissipated on the load in watts.
A true centrifugal casting operation is to be performed in a horizontal configuration to make cast iron pipe sections. The sections will have a length = 42.0 in, outside diameter = 8.0 in, and a wall thickness = .50 in
Is the high carrier concentration in transparent conductors due to their ideal band structure or to the presence of defects and dopants. If two different materials but with the same work function are brought into contact, does band bending result.
An ideal non-degenerate silicon step junction diode with an intrinsic level Ei exactly at mid band-gap is fabricated. Answer all questions related to this diode. a) If Vbi = 0.65V and NA=4ND, what is the doping concentration in the quasi neutral n ..
You are required to determine that this next generation transmission system will require a spectral efficiency of 5 bits/sec per Hertz.
The message signal x(t), in the following system has a nabdwidth of 10kHz. The center frequecy of the Narrow Band Frequency Modulated (NBFM) signal nbfm(f) is 1Mhz, the frequency deviation f1=1khz and the amplitude of the NBFM signal is 1V.
Considering that the only parameters known are the input line-to-line voltage of 415V rms (f=50Hz), the firing angle (a= degrees) and the overlap angle (b=15degrees), calculate the Power Factor as seen from the input AC
The flat circular disk rotates about a vertical axis through O with a slowly increasing angular velocity ?. Prior to rotation, each of the 0.44-kg sliding blocks has the position x = 22 mm with no force in its attached spring.
b. Find the Fourier Transform of signal x(t) (use the Fourier Transform definition) c. Write down the double-sided amplitude and phase spectra x(t) d. Plot the double-sided amplitude and phase spectra of x(t)
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