Question

The purpose of transmitting power at high voltage (100-500 kV) from a generation station through overhead...

The purpose of transmitting power at high voltage (100-500 kV) from a generation station through overhead or underground transmission lines to substations is to

Select one:

a. increase transmission frequency.

b. increase energy efficiency.

c. increase current amplitude.

d. increase electrical resistance.

Homework Answers

Answer #1

Answer is b

The primary reason that power is transmitted at high voltages is to increase efficiency. As electricity is transmitted over long distances, there are inherent energy losses along the way. High voltage transmission minimizes the amount of power lost as electricity flows from one location to the next. The higher the voltage, the lower the current. The lower the current, the lower the resistance losses in the conductors. And when resistance losses are low, energy losses are low also.

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
32-2 Power transmission Why do power transmission lines use high voltage? An electric power station sends...
32-2 Power transmission Why do power transmission lines use high voltage? An electric power station sends out a fixed 40 MW of power. The cross-country power line wires from the power station to the city has a total resistance of 7 Ω. Assume the circuit consists of the power station, the line wire (resistor), the city (resistor), and a storage battery. Find the power loss (in kW) in the wires using a line voltage of a) 500 kV b) 20...
100 MW of electrical power is delivered at 200 kV to a distribution center over a...
100 MW of electrical power is delivered at 200 kV to a distribution center over a transmission line which consumes 10% of the total power developed by the generating station in heat losses. a) What is the value of the voltage fed to the transmission line at the generator end? b) How much power would be delivered to the same load if the resistance of the transmission line was halved but the generator voltage was unaltered?
2(a). A transformer has a primary-to-secondary turns ratio of 100:1. The voltage on the primary side...
2(a). A transformer has a primary-to-secondary turns ratio of 100:1. The voltage on the primary side is 27.7 kv.a.c. at 60.0 Hz ( assume 60.0 Hz when treating electric power topics). A load is connected across the secondary winding. Assuming that the transformer is ideal, what voltage is developed to the load? Briefly show your work. Sketch a diagram. 2(b). The load of part a is a 2.00-ohm load. How much current does the load draw from the transformer’s secondary...
QUESTION 89 A high-rise building that has water tanks on the roof will probably have a...
QUESTION 89 A high-rise building that has water tanks on the roof will probably have a ________ water distribution system for the upper floors. Upfeed Pumped upfeed Downfeed None of the above 1 points    QUESTION 90 Which of the following ratings evaluates the performance of a building "assembly" in a fire? a. Building Construction Type b. Flame Spread rating c. Fire Resistance Rating d. Location in a building 1 points    QUESTION 91 Which of the following statements is...
Delta airlines case study Global strategy. Describe the current global strategy and provide evidence about how...
Delta airlines case study Global strategy. Describe the current global strategy and provide evidence about how the firms resources incompetencies support the given pressures regarding costs and local responsiveness. Describe entry modes have they usually used, and whether they are appropriate for the given strategy. Any key issues in their global strategy? casestudy: Atlanta, June 17, 2014. Sea of Delta employees and their families swarmed between food trucks, amusement park booths, and entertainment venues that were scattered throughout what would...
What tools could AA leaders have used to increase their awareness of internal and external issues?...
What tools could AA leaders have used to increase their awareness of internal and external issues? ???ALASKA AIRLINES: NAVIGATING CHANGE In the autumn of 2007, Alaska Airlines executives adjourned at the end of a long and stressful day in the midst of a multi-day strategic planning session. Most headed outside to relax, unwind and enjoy a bonfire on the shore of Semiahmoo Spit, outside the meeting venue in Blaine, a seaport town in northwest Washington state. Meanwhile, several members of...