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A 10-hp, 230 V, 60 Hz, three phase Y- connected, synchronous motor delivers full load at a power factor of 0.707 leading. The synchronous reactance of the motor is j5 Ω per phase. The rotationnal loss is 230W and the field winding loss is 70W. Calculatea. The generated voltageb. The efficiency of the motor. Neglect the armature winding resistanceA 208-V Y connected three phase synchronous motor has a synchronous reactance of 4Ω per phase and negligible armature winding resistance. At a certain load the motor take 7.2kW at 0.8 pf lagging. If the power developed by the motor remains the sam while the excitation voltage is incresae by 50% by rasing the field excitation, determine:a. The new armature currentb. The power factor
A 3-D printer lays down a semicircular arc of positively charged plastic with a radiusR = 3.5 cm, and a linear charge density of Lambda = +1.9 uC/m. After the printer has finished the arc, the stylus moves to the center of the arc.
Determine the coefficients p, q, and the determinant (delta) of the system: y1'=y1 + 10y2 Y'2=7y1 - 8y2 Based on these values, what is the type and stability of the critical point
A certain lightbulb has a tungsten filament with a resistance of 21.9 when at 20.0°C and 145 when hot. Assume the resistivity of tungsten varies linearly with temperature even over the large temperature range involved here.
A group of small appliances on a 60Hz system requires 20 kVA at 0.85 pf lagging when operated at 125V (rms). The impedance of the feeder supplying the appliances is 0.01 + j0.08 Ohms. The voltage at the load end of the feeder is 125V (rms).
a parallel plate transmission line is made up of perfect conductors of width w = .2m and d = .01m. The medium between the plates is a diaelectric of epsilon = 2.25*(epsilon not) and mu = mu not. For a uniform plane wave propagating down the line
Taking under consideration a microcontroller, such as the 68HC12, identify five internal subsections within your selected microcontroller and provide an explanation for each subsection's function.
Utilizing the rat stereotaxic atlas in the course materials, devise a surgical plan for implanting a Michigan type array
For loads causing more than 1 V to appear across the generator, the output current is no longer assured but will be reduced by some unknown amount. This circuit limitation, occurring, for example, at the peak of a sine wave signal
Interpret manufacturer's data sheet to select appropriate combinational logic devices for specific purposes
An attractive fuel for nuclear fusion is deuterium H 1 2 which constitutes about .015% of the hydrogen in the oceans If each deuterium nucleus produces 7.4 MeV in a fusion reaction, how much energy would be released if each H 1 2 atoms in the 4 gram..
Consider a causal LTI (Linear-time invariant) system described by the following differential equation: \(\frac{d^2}{dt^2}y(t) + 5\frac{d}{dt}y(t) + 6y(t) = \frac{d}{dt}x(t) + x(t)\) a) Determine the transfer function of this system.
Turbines at the Conowingo plant on the Susquehanna River each develop 54,000 hp at 82 RPM under a head of 89 feet. What is the turbine type Estimate flow rate of each turbine.
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