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There is a total current of 2.5 mA into a node and the current out of the node divides into three parallel branches. What is the sum of all three branch currents?
In a certain transformer, the input power to the primary is 120 W.- If 8.5 W are lost to the winding resistance, what is the output power to the load, neglecting any other issues?
Calculate the input reactive power of the motor after p.f. improvement. Calculate the capacitive reactance per phase of the capacitors connected in star across the motor.
Three parts of asingle-phase electric system are designated A,B and C and areconnected to each other through transformers. Neglect transformerresistance and magnetizing current. The transformers are rated as follows
A three-phase ,600MVA,13.8KV Ac generator has a synchronous reactance of 2.0 per unit. The generator is connected to a system for which specified base fare 100MVA and 345KV.
Many hallway and some room lights are wired so that they may be controlled from either end of the hall or room. This is called a two-way or three-way switch (references vary). Explain why this is equivalent in operation to an XOR gate.
Using the results of (1) design a resistive network with an equivalent resistance of 3 kohms using 2 resistors with the same value from those: 1k, 1.2k, 1.5k, 1.8k, 2.2k, 2.7k, 3.3k, 3.9k, 4.7k, 5.6k, 6.8k. Find an expression for the equivalent res..
A jet engine is modeled as a serial combination of a compressor, an adiabatic constant pressure combustor, and a turbine. Air (considered to have a variable specific heat) is compressed through a compression pressure ratio of 8.25:1
Two balanced three phase loads that are connected in parallel arefed by a three pahse line having a series impedence of 0.4+j2.7ohms per phase.one of the loads absorbs 560kva at 0.707 pf laggingand th eother 132kWat unity pf.
Tuning methods for PID controllers, Investigating tuning methods for PID controllers of 2nd order and 3rd order control systems. Eg. Zieglar Nichols, etc
Consider an oxide-to-n-type silicon junction at room temperature. The impurity doping concentration in the silicon is Nd=8 x 1015 cm-3. Calculate the maximum space charge width in the silicon.
Determine the peak-to-peak ripple at the output.
If an external load is to be placed across teh current phasor source, find the Thevenin source equivalent of the circuit described. Draw the original circuit and the Thevenin equivalent circuit. What must the load be to extract maximum power from ..
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