transformer cooling, Electrical Engineering

Assignment Help:
An oil-filled transformer has a c.m.r. of 500 kVA which allows it to run
continuously in an ambient of 35°C with an oil temperature rise of
50°C. The transformer has a time constant of 1.5. hours and the ratio of
copper losses to iron losses at c.m.r. is 1.5:1.
After switch-on, the transformer supplies a load of 600 kVA for one
hour and the load then rises to 750 kVA. Calculate the period of time
that the transformer can supply this load without exceeding its rated
maximum temperature. Sketch the heating curves for the two loads.

Related Discussions:- transformer cooling

Application of electrochemical grinding, Explain the working principle, Sur...

Explain the working principle, Surface finish, material removal, accuracy,advantages and application of Electrochemical Grinding(ECG). (a) In electro chemical machining of pure

Illustrate the internal architecture of 8085, Microprocessor 1. Write a...

Microprocessor 1. Write an assembly language program to find the highest among two numbers. 2. Draw and illustrate the internal architecture of 8085 briefly. 3. What is t

Capacitor-input filter, Capacitor-input filter: The capacitor-input fi...

Capacitor-input filter: The capacitor-input filter, as well called pi filter because of its shape which looks like the Greek letter pi, is a sort of electronic filter. Filter

Four cells in series, A battery having of 12 cells are divided in three gro...

A battery having of 12 cells are divided in three group which each group having of four cells in series. The three groups are joined in parallel. The emf of every cell is 1.5V and

Zener Diode, #question ...THE APPLICATION AND OPERATION OF ZENER DIODES

#question ...THE APPLICATION AND OPERATION OF ZENER DIODES

What is ammeter, What is ammeter An ammeter is an instrument used to ca...

What is ammeter An ammeter is an instrument used to calculate current and must be connected in series with the circuit.

External frequency compensation of operational amplifier, Q. External Frequ...

Q. External Frequency Compensation of operational amplifier? For applications requiring a more extended high-frequency response, there are op amps with no internal compensation

Explain about synchronous machines, Q. Explain about Synchronous machines? ...

Q. Explain about Synchronous machines? Large ac power networks operating at a constant frequency of 60 Hz in the United States (50 Hz in Europe) rely almost exclusively on sync

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd