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A three-phase, four-pole, 50-hp, 480-V, 60-Hz, Y-connected induction motor has the following parameters per phase:r1 = 0.10 ohm , x1 = 0.35 ohm , r2' = 0.12 ohm, x2' = 0.40 ohm.
It is known that the stator core losses amount to 1200 W and the rotational losses equal 950 W. Moreover, at no-load the motor draws a line current of 18 A at a power factor of 0.089 lagging.
When the motor operates at a slip of 3.5%, find :a. The input line current and power factorb. The developed electromagnetic torque in newton-metersc. The horsepower outputd. The efficiencye. Repeat the resuts a-d for the slip of 5%
what is the difference between the words "rated as 3mA" , and "biased at 5mA" , when talking about a diode what is teh difference between saying " the diode is rated as a 3mA device", and " The diode is biased at a current of 0.5mA"
1. Determine Laplace transform of (2-2e^-4t)u(t) 2. Determine if x(t) = 9cos(2t)+4sin(pi t) is periodic; if periodic, calculate the period. 3. Compute the inverse Laplace transform of X(s)= (s+2)/(s^2+ 7s + 12).
(a) Design a simple PNP current source to give an output current of IO = 0.5 mA (nominal value). The transistor parameters are f = 50, VEE = 10 V, VCC = 10V, |VBE| = 0.7 V, |VCEsat| = 0.3 V and VA = 50 V (for all transistors)
compute the power loss in a transmission line with a resistance of 0.05 ohms/mile. Compute the power loss if 500kW of power is transmitted from a power generating station to cities at distances of 20,30,40....100 miles at 100v and 200v.
Which of the following items is considered as a factor of production and which is considered as a raw material? In case you classify an item as a factor of production, identify the type of the resource.
The charge entering the positive terminal of an element is q = 10 sin 4 piet mC while the voltage across the element (plus to minus) is v = 2 cos 4 pie t V. (a) Find the power delivered to the element at t = 0.3 s.
transfer function: T(s)=1/(0.1s+1) with all initail conditions at 0 a) if the input is 1.5sin(2t)*u(t) find the steady state value of the output b) after the input is applied, approximately how long will it take for the steady state value you found i..
If there are 500 atoms in the sample and assuming that from any state all possible downward transitions are equally probably, what is the total number of photons that will be emitted when all atoms return to the ground state
ETEC 6414 Sensors and Wireless Communications, Assignment 1(a) –Sensor Circuit, Develop a Sensor Circuit using commodity components
The electric motors unmanned drones use transformers to produce sufficient current to move the flight surfaces. Due to the weight restrictions of the vehicle, the transformers use a ceramic rather than iron, the ceramic has a permeability of mu = 4..
The cross section of a cottage 20 ft wide is an isosceles triangle. If the slope of a side is 1.75 and there is a second floor 9 feet above the ground floor,What is the angle at each tip of the cottage?
Calculate the signal to noise ratio given RMS Noise Voltage = 20mV and RMS Signal Voltage = 2.5V Calculate ETotalRMS given e21RMS = 5V and e22RMS = 7V
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