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An induction motor has an output or shaft power of 30 kW at 86% efficiency. For this operatingcondition, stator copper loss = rotor copper loss = core loss = mechanical rotational losses. Determine the slip.
A circuit consists of a current source, i=0.030 sin 500t, in parallel with L=20mH, C=50 micro Farads and R=25 Ohms. a. Determine the voltage V across the circuit. b. Solve for the power factor of the circuit.
Calculate the extraction efficiency (in percentage) of flat - surface LED without any encapsulation (emits directly into the air). The LED is fabricated from material with the refractive index n = 2.3.
Prove that the terminals of a voltage controlled current source (VCCS) can be connected so as to form a 2 terminal element that behaves exactly like a resistor.
A ideal transformer is rated at 4800/480 volt, at 75KVA. it is connected as a step down auto transformer. find the line and load voltages, turns ratio and total apparent, real and reactive power at full load and at 60% rated load at a power factor..
Obtain the power factor of a two-branch parallel circuit whre th efirst branch has Z1 = 2 + j4 ohms and the second Z2 = 6 + j0 ohms. To what value must the 6-ohm resistor be changed to result in the overall power factor of 0.90 lagging
Design a 16 bit x 16 bit combinatorial multiplier. Use a topology similar to the 4x4 multiplier.
Design a vending machine controller. The machines sells coke and pepsi. The cost is 25 cents, accepting dimes and nickels. When a dime is inserted the input D is asserted. When a nickel is inserted the input N is asserted.
Low doped silicon is used in partide detectors, in order to obtain a wide depletio region. Consider a pn junction with p-side doping Na = 5 X 1012 cm-3 and n side doping Nd = 1017 cm ".
Discuss why phasor analysis can only be performed on single-frequency circuits. For multiple frequencies what type of analysis must be performed
Describe what precautions you will take in designing the analog front end of the instrument before you perform the sampling for DSProcesing. Justify your claims by using engineering arguments.
Three -phase motor is connected to a three-phase power source that has an abc phase sequence. the first load is a wye-connected, three-phase motor withdrawing a line current of 20A at a 0.8 lagging power factor.
A chopper is used to control the power flow from a dc source voltage of 125-V to a battery whose voltage is 240-V. The power transferred is 60 kW. Determine the duty cycle and the average input current.
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