Reference no: EM13967691
A 138 kV, 200 MVA, 60 Hz, three-phase, power transmission line is 100 km long, and has the following characteristics:
r = 0.103 W/km
x = 0.525 W/km
y = 3.3 ´ 10-6 S/km
(a) What is per phase series impedance and shunt admittance of this transmission line?
(b) Should it be modeled as a short, medium, or long transmission line?
(c) Calculate the ABCD constants of this transmission line.
(d) Sketch the phasor diagram of this transmission line when the line is supplying rated voltage and apparent power at a 0.90 power factor lagging.
(e) Calculate the sending end voltage if the line is supplying rated voltage and apparent power at 0.90 PF lagging.
(f) What is the voltage regulation of the transmission line for the conditions in (e)?
(g) What is the efficiency of the transmission line for the conditions in (e)?
|
Who proposed the law of conservation of mass
: Who proposed the law of conservation of mass. Who amended the original law of law of conservation of mass. How metal sodium reacts with a non metal. What is the law of constant composition or proportion.
|
|
Customer of adopting a business processes
: Use the P&G example at the beginning of the chapter to explain the benefits to the customer of adopting a business processes perspective. Why might a traditional functional perspective have "blinded" P&G to the problems with the old system?
|
|
Business plan of amj-eco company
: The Business Plan Of AMJ-Eco Company - AMJ Eco will be a company that is specializing in waste management in Saudi Arabia
|
|
Write down the business strategy of a firm
: Is it enough to just write down the business strategy of a firm? Why or why not? Conversely, what are the limitations of not writing down the strategy, and instead depending on the firm's actions to define the strategy?
|
|
Calculate the abcd constants of this transmission line
: Sketch the phasor diagram of this transmission line when the line is supplying rated voltage and apparent power at a 0.90 power factor lagging. Calculate the sending end voltage if the line is supplying rated voltage and apparent power at 0...
|
|
Who encodes the message in the smcr communication model
: Who encodes the message in the SMCR communication model? When a message is interpreted by the receiver in the SMCR model, it means it has been.
|
|
Web sites for the professional organizations
: Visit the Web sites for the professional organizations listed in the chapter. Who are their target audiences? Are some more focused on purchasing professionals, or logis- tics professionals? Which of the careers listed in these Web sites are menti..
|
|
Describe the security issues specific to cloud computing
: Simply explain the concept of a database, making sure you delineate the difference between the organization of a relational database and a non relational database. Explain how encryption protects information and describe the security issues specific ..
|
|
What is sending end voltage and current of transmission line
: The underground cable is now supplying 8 kV to an 800 kVA, 0.9 PF lagging single-phase load. What is the sending end voltage and current of this transmission line?
|