Question

In: Electrical Engineering

For synchronous generator to work at lagging PF and unity PF, which one have more efficiency?...

For synchronous generator to work at lagging PF and unity PF, which one have more efficiency? Why? (Ra is not equal to zero)

Solutions

Expert Solution

Synchronous generator working at unity power factor is more efficient compared to lagging power factor....

As the output changes.i.e, which is more for unity power factor...when compared to lagging power factor..

Which is explained by taking the following example of synchronous generator with same load at different power factors...


Related Solutions

480 V, 200 kVA, 08 PF lagging, 60 Hz two pole Y connected synchronous generator has...
480 V, 200 kVA, 08 PF lagging, 60 Hz two pole Y connected synchronous generator has a synchronous reactance of 0.25 Ω and an armature resistance of 0.03 Ω. At 60 Hz, its friction and windage losses are 6 kW, and its core losses are 4 kW. The field circuit has a dc voltage of 200 V, and the maximum IF is 10 A. The resistance of the field circuit is adjustable over the range from 20 to 200 Ω....
The physical size of an synchronous generator has a profound effect upon its efficiency, power output,...
The physical size of an synchronous generator has a profound effect upon its efficiency, power output, relative cost, and temperature rise. Discuss and analyze why these characteristics are intimately related.
Synchronous Generator – High-speed with non-salient polerotors you should have the following components: Principle of operation...
Synchronous Generator – High-speed with non-salient polerotors you should have the following components: Principle of operation Main parts and their functions Motor/Generator general layout Schematic diagram Real-life Applications Advantages and disadvantages Environmental impacts
Social Efficiency or Equity:  Which is more important economically?    
Social Efficiency or Equity:  Which is more important economically?    
Compare monopoly with perfect competition in terms of price and efficiency. Which market charges more? Which...
Compare monopoly with perfect competition in terms of price and efficiency. Which market charges more? Which is more efficient?
a)Differences between asynchronous and synchronous generators? Which one applies in the plants and why? b)Where do...
a)Differences between asynchronous and synchronous generators? Which one applies in the plants and why? b)Where do gas and steam turbines apply, not to mention in power plants? c) What are the main components of the wind generator system or solar-batteries-substation? d) What is the difference between using the star or triangle connection at the start of an engine? e) In equipment tests, what is the difference between type, routine and special tests? f) Why are insulated cables not used in...
1) Which of the following is a statement of weak form efficiency? Select one: a. if...
1) Which of the following is a statement of weak form efficiency? Select one: a. if markets are efficient in the weak form, then it is impossible to make consistently superior profits by using trading rules based on past returns b. if the markets are efficient in the weak form, then prices will adjust immediately to public information c. If the markets are efficient in the weak form, then prices reflect all information d. None of the above 2) The...
Identify five ways in which patients can gain more control over their healthcare. Which one have...
Identify five ways in which patients can gain more control over their healthcare. Which one have you used. Describe how it has been a benefit to you.
QUESTION 26 Which of the following will have the LEAST influence on the efficiency of transformation...
QUESTION 26 Which of the following will have the LEAST influence on the efficiency of transformation in E. coli bacteria? A. heat shock B. calcium chloride treatment C. chilling on ice D. using high concentrations of DNA E. electrical field QUESTION 31 Heat can disrupt hydrogen bonding between DNA strands. Which of the following DNA strands would denature at the LOWEST temperature? A. 90% AT and 10% GC B. 70% AT and 30% GC C. 10% AT and 90% GC...
which one is more risky debt or equity
which one is more risky debt or equity
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT