A synchronous motor is rated at 100 kVA. The motor is connected to an infinite bus of 5 kV. The synchronous reactance of the motor is 0.1 ?. The motor is running at a no-loading condition (real power output is zero). All losses can be ignored. Calculate the equivalent field voltage Ef that operates the motor as a synchronous condenser delivering 100 kVAR to the infinite bus. Draw the phasor diagram. (A synchronous condenser produces reactive power and no real power.)
What will be an ideal response?
Synchronous Machine:
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Sidebones most commonly occur at the top of the splint bones. They are usually associated with trauma such as slipping, being kicked, jumping, and playing hard.
Answer the following statement true (T) or false (F)
A room 20 feet 0 inches wide, 24 feet 0 inches long, and 8 feet high is wallpapered. One roll of wallpaper covers 55 square feet. How many rolls are required for the job? Deduct 15% for window and door openings. Round the answer to the nearest whole roll.
Fill in the blank(s) with the appropriate word(s).
Refer to Exercise 12 in Section 3.2. Assume that 
= 50 ± 1 MPa,w = 1.2 ± 0.1 mm, and k = 0.29 ±0.05 
.
a. Estimate ?, and find the uncertainty in the estimate.
b. Which would provide the greatest reduction in the uncertainty in 
: reducing the uncertainty in ?0 to 0.1 MPa, reducing the uncertainty in w to 0.01 mm, or reducing the uncertainty in k to 0.025 
?
c. A new, somewhat more expensive process would allow both 
and w to be measured with negligible uncertainty. Is it worthwhile to implement the process? Explain.
Environmental recovery company RexChem Partners plans to finance a site reclamation project that will require a 4-year cleanup period. If the company borrows $4.1 million now, how much will the company have to get at the end of each year in order to earn 15% per year, compounded quarterly on its investment? Additionally, what is the spreadsheet function?
What will be an ideal response?