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A single-phase transformer has two 120V windings (primary) and one 240V windings (secondary) such that with the two primary in series properly (dot to no dot) the transformer is a 240:240V transformer.
A test is run on one of the primary coils (one of the 120V coils) with the other coils open-circuited. The following values are found: V = 120V, I = 0.8A, f=60Hz
Assume NO leakage inductance, coil resistance, or magnetic losses, and assume the coefficient of coupling between any 2 coils is k = 1.
What is the magnetizing inductance (Lm) for the coil tested above?
Each pole of a 100kW, 250v flet-compound generator has a shunt field of 2000 turns and a series field of 7 turns. If the total shunt field resistance is 100 ohms, calculate mmf when the machine operates at rated voltage.
Compute the inverse Fourier transform for X(ω) = cos 4ω. 5. A signal with the highest frequency component at 10 kHz is to be sampled. To reconstruct the signal, the sampling must be done at a minimum frequency of?
What legal condition must be present for a Surety to act There are 6 courses of action that he can take (see slide 102). Assume the contract in question is to repave the Founder's Lot at UOIT; Pave-M-Good (PMG) being the contractor
Induction motor Y connection at 60Hz with the following: A.) 400 kVA induction motor running at 80% load with effeciency of 96% and p.f.=.88 b.) 40kW resistance heating source
100 kg of a certain gas is contained within a piston-cylinder assembly. the gas undergoes a processwhich the pressure volume relationship is (PV)^n = constant. The initial pressure is 6 bars, the initial volume is 0.2 cubic meters
A temperature transducer has the relationship R=200 + 10T where R is in ohms and T is in Celsius. The problem specifications are: Range is 30=T=50°C Resolution is 0.01°C Frequencies of interest are 0 to 100Hz Transducer dissipation constant is 20 mW..
A 345-kV, 3-phase transmission line delivers 100 MVA, 0.866 lagging, to a DELTA connected load. Calculate the following: a.) The total real and reactive power delivered to the load. b.) The real and reactive power per phase.
b. Draw the logic diagram, using the original Boolean expression. d. Obtain the truth table of the function form the simplified expression and show that it is the same as the part one. e. Draw the logic diagram from simplified expression, and compare..
A 75-kVA, 230-V/115-V, 60-Hz was tested with these results: Open-circuit test: 115 V, 16.3 A, 750 W; Short-circuit test: 9.5 V, 326 A, 1200 W a) Determine the voltage regulation at rated load, 0.8 power factor lagging.
A pair of synchronous machines, on the same shaft, may be used to generate power at 60 Hz from the given source of power at 50 Hz. Determine the minimum number of poles that the individual machines
During the cyber security activity conducted in class by Renee Etoty, you were asked to identify systems that were conducting or experiencing cyber attacks. You will use the data provided during this activity to develop a program to display.
The input to the filter is Vin(t)=5+5cos(1000pi*t)+sin(20000pi*t)+4cos(3000pi*t) V and the output is Vout(t)=5+5cos(1000pi*t+10deg)+5sin(3000pi*t) V.
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