Physics, 24.09.2019 08:11 hosteenimport21
Review of basic requirements for power system operation 1) explain why power system operators in north america require that the frequency of all generators that supply power to the power network be 60hz (with small variation limits). how should the generators be operated to achieve the 60-hz frequency? 2) name 3 major requirements for normal operation of a power system and explain the rationale of the requirements. 3) consider a 10-mile 3-phase 11-kv power line that brings power to a residential street (called a feeder). the voltage at the sending end of the feeder is 100% of the nominal value (i. e. 11-kv line-line, or 1.0 per unit). the voltage at the receiving end of the feeder (i. e. end point of the power line) is 95% of the nominal value (i. e. 0.95 per unit). answer the following questions: a) if one connects a big capacitor to the receiving end of the feeder, what happens to the feeder voltages at the sending end and at the point of the capacitor connection? b) if one connects a big inductor to the receiving end of the feeder, what happens to the feeder voltages at the sending end and the point of the inductor connection?
Answers: 1
Physics, 22.06.2019 10:00, jeffffffff
**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z
Answers: 1
Physics, 22.06.2019 14:30, 21schraderlily
Will mark as brainliest how does a catapult increase the trajectory of an object? ps. answer as if u were a 5th grader
Answers: 1
Physics, 22.06.2019 16:00, blythephillips2734
An charge with mass m and charge q is emitted from the origin, (x, y)=(0,0). a large, flat screen is located at x=l. there is a target on the screen at y position y(h), where y(h) > 0. in this problem, you will examine two different ways that the charge might hit the target. ignore gravity in this problem. 1.assume that the charge is emitted with velocity v(0) in the positive x direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive y direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l. 2.now assume that the charge is emitted with velocity v(0) in the positive y direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive x direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l.
Answers: 1
Review of basic requirements for power system operation 1) explain why power system operators in nor...
Computers and Technology, 23.10.2021 19:20
Social Studies, 23.10.2021 19:20
Chemistry, 23.10.2021 19:20