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What Role Power factor play in AC circuits and power dissipation ? and What are the Disadvantages of Low Power Factor ??
A 3 phase, 2 winding, 230kv/115kV, delta-wye, 50MVAtransformer has a series impedance of (4.0 at angle 81 degrees) %and core losses of 1.0% at rated voltage. When the transformer issupplying a load of 40MW at a power factor of 0.80 lagging at rate..
An amplifier has a voltage gain of 60 dB. If the input voltage to the amplifier is 1mV, what is the output voltage
a) draw a schematic diagram of the network showing all workstations, servers, segments and bridges (or gateways or routers or brouters). b) State which network software is used in the LAN and describe how the software facilitates the functions.
Devise a detailed algorithm for a ring with p nodes so that each node would atttain the final sum of original node values. Determine the worst case communication steps for the algorithm.
A sample has a T1 of 0.8 seconds. The net magnetization from the sample set equal to zero and then allowed to recover towards its equilibrium value. After 1.0 seconds, what fraction of the equilibrium magnetization value will be present
Aportion of a power system consists of two generators operating inparallel, connected to a step-up transformer that links them with a230 kV transmission line. The ratings of these components are; Generator G1:10MVA, 12 % reactance
the following binary numbers are all represented using 6 bit signed 2's complement. all addition should also be conducted in 2's complement form. A=111000; B=010110 (a) what is A's value in decimal
A terminated transmission line with Z0 = 60 ohm has a reflection coefficient at the load of = 0.4 60. (a) What is the load impedance (b) What is the reflection coefficient 0.3 away from the load (c) What is the input impedance at this point
An additional variable power factor load is to be added to the factory. The new load will add 320 kW to the factory. The power factor of the variable power factor load is to be adjusted so that the overall power factor of the factory is 0.96 laggi..
The designer selects RD=2RL. If its required to realizes an overall voltage gain Gv of -10 V/V, what gm is needed Also Specify the bias current ID. If to increase the output swing, RD is reduced to RD =RL, what does Gv become
Given a LEO satellite system with a dish gain of 20 dB , orbiting altitude of 789 km, and download frequency of 1626 MHz , what is the satellite's transmitter output power required so that it is received by a wireless phone with 1 pW
A voltage divider has a 5 V source and two 150 kilo ohm resistors. What is the voltage across(a) an ideal voltmeter (b) a voltmeter with an input resistance of 10 mega ohms
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