What is the difference between AC voltage and DC voltage?
Answer Posted / priti
Direct current or DC electric motors work for situations where speed needs to be controlled. DC motors have a stable and continuous current. DC motors were the first and earliest motors used. They were found, however, to not be as good at producing power over long lengths. Electric companies found using DC motors to generate electric did not work because the power was lost as the electric was transmitted. Brush DC motors use rings that conduct the current and form the magnetic drive that powers the rotor. Brushless DC motors use a switch to produce the magnetic drive that powers the rotor. Direct current motors are often found in appliances around the home.
Alternating current or AC electric motors are used differently based on what type of AC motor it is. Single phase AC motors are known as general purpose motors. They work well in many different situations. These AC motors work great for systems that are hard to start because they need a lot of power up front. Three phase, also called polyphase, AC motors are usually found in industrial settings. These motors also have high starting power built transmit lower levels of overall power. AC power gets its name from the fact that it alternates in power. The amount of power given off by an AC motor is determined by the amount of power needed to operate the system.
Is This Answer Correct ? | 8 Yes | 4 No |
Post New Answer View All Answers
why starting current is high and resistance is almost 0 during the starting of motor dc motor...?
Why efficiency of generator is higher than motor at a particular load?
how to setting Load amps tripping time and extra settings for load Transformer protection relay with RMU panel using C&S model relay..?
What is a slack bus?
what is the setting of locked rotor in HT motor ? (answer expecting in percentage)
What is a surge supressor why its is used in synchronous generators
WHAT IS THE DIFFERENCE BETWEEN GENERAL INVERTER AND SOLOR INVERTER TELL ME PLZ
I NEED RRB SYLABUS FOR JE ELECTRICAL ,PLEASE SEND TO MY E- MAIL ID joo28_eee@yahoo.co.in
Write down the name of 2 lady Bir Pratin of Bangladesh
For high frequency application we use which transformer?
What is open loop and control loop systems?
what is meant by star/delta voltages as 440/220 in a 3 phase induction motor, and why it should be connected on STAR IN 3 PHASE SUPPLY
what are the components in electrical control panel (for example: 415V, 3-ph, panel to operate utility and 3-ph DG set).
what is difference between bus coupler and auto transfer switch
Should power factor be low or high?