Determine maximum neutral current-power factor, Electrical Engineering

1.)  A three phase, D0 HP, 1765 rpm, BA0 V induction motor operating at three quarter load has an efficiency of 91% and a power factor of 87%. Determine active power, apparent power, reactive power and line current.

2.) Determine the rated primary and secondary currents and the approximate short circuit currents for a three phase A3,000-B80 V, 250 kVA transformer with a D% impedance. What is the ohmic impedance on the secondary side of the transformer?

3.) A 240 V center-tap transformer serves the following loads:

a. 2 - A500 W at 240V
b. 1 - C200 W at 120 V
c. 1 - D000 W at 240 V
d. 4 - 1500 W at 120
What are the two line currents and neutral current when balanced as closely as possible? What is the maximum neutral current?

4.) A three phase 480 V source supplies a B00 kW load and B00 kVAR capacitor at unity power factor. What is the power factor of the load without the capacitor?

 

Posted Date: 2/28/2013 4:50:03 AM | Location : United States







Related Discussions:- Determine maximum neutral current-power factor, Assignment Help, Ask Question on Determine maximum neutral current-power factor, Get Answer, Expert's Help, Determine maximum neutral current-power factor Discussions

Write discussion on Determine maximum neutral current-power factor
Your posts are moderated
Related Questions
Question 01 Convert the following binary numbers to its specified number system 111.101 (2) to octal 10111 (2) to decimal 0.1010 (2) to hexadecimal 1011.11 (2)

y more number of resistance and capacitor are used in a circuit what is the purpose to add ore than one..?

Please suggest recent application of DCS WHICH I CAN USE AS A TOPIC OF MY Ph.D.

Obtain expressions for the drain source current in an n-channel MOS transistor in terms of terminal voltages and transistor parameters. Indicate reasons why, for deep sub micron t

FIFO (First in First Out) stack is used in 8086.In this type of Stack the first stored information is retrieved first.

A 0.1µF capacitor is charged to 200 V before being connected across a 4 kΩ resistor. Determine: (a)  The initial discharge current (b)  The time constant of the circuit

Explain BIOS The IBM PC has in its ROM a collection of routines, each of which performs some particular function such as reading a character from keyboard, writing character to

Question: a). Draw the energy diagram of a pn junction: (i) at thermal equilibrium, (ii) when a forward bias with magnitude half the built in potential (V = φk/2) is applie

Methods of Testing Irrespective of reasons, testing is commonly carried out 1. On site, or 2. In a Meter Testing Station (MTS) accredited as per IS/ISO/IEC 17025.

Q. With the help of circuit diagram explain a Miller Sweep generator Figure given below shows the circuit of a Miller integrator or a sweep circuit. Transistor Q1 acts as a swi