Electric Circuits Begin Date: 9/21/2018 12:01:00 AM -- Due Date: 9/30/2018 11:59

Question

Electric Circuits Begin Date: 9/21/2018 12:01:00 AM -- Due Date: 9/30/2018 11:59:00 PM End Date: 10/2/2018 11:59:00 PM (5%) Problem 12: The hydroelectric generators at the Hoover Dam can produce a maximum current of 8.00 × 10 A at 250 kV Otheexpertta.com 50% Part (a) What is the maximum power output of the generators, in watts? e» 50% Part (b) The water that powers the generators enters and leaves the system at a low speed (thus we can neglect its change of kinetic energy) and loses 160 m of altitude during the process. What is the water flow required, in cubic meters per second, to produce this power, assuming 83.5 % efficiency? Grade Summary Deductions Potential 0% 100% | | Submissions tan() acosO sinh0 sin cos Attempts remaining: 20 (1% per attempt) detailed view cotan)asinO acotan)s coshO tanh) cotanhO DegreesRadians atano 2 3 END DELI CLEAR Submit Hint give up! Hints: 1 % deduction per hint. Hints remaining: 2 Feedback: 0% deduction per feedback

Explanation / Answer

a)

Max power= Vi= 8*10^3*250*10^3= 2*10^9 W

======

E= 0.835* mgh

2*10^9=0.835* m*9.8* 160

m= 1.527*10^6 kg

Volume= mass*density= 1.527*10^6* (1/10^3)= 1.527*10^3 cm^3

=====

Good luck

Related Questions

Navigate

• Browse (All)
• Browse E
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.