Answer Posted / hiren barot
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 ? | 19 Yes | 6 No |
Post New Answer View All Answers
HOW DO YOU CAN CHECK A 15KV DIODE, WHETHER IT IS OK OR NOT?
Give idea about General Engineering. From which book i can study this topic. Pl. reply me via email. My email is ravi@bhelhwr.co.in, also give the name of book/website, from where i can prepare it.
Make a list observation on Transformer?
WHAT IS LOAD CELL
what are the Alarm, Trip & Safety equipment (Issues) present in Power Transformers pls Mail it to ashokbabunhce@gmail.com
2. What are the parameters of EHT sub-station?
on a three-winding transformer relationship delta-delta-star, on third winding why the relationship is a star? what are the advantages and disadvantages? Thank you and please help
what is positive , negative & zero equivalent system resistance
how to setting voltage RTCC panel
why should small green grass ans small plant should not be there inside the transformer Yard in the factories
What is formula calculation size cable wire ?
can we use ZNyn11 transformer instead of Dyn11 transformer in distribution for effectively eliminating harmonics from the industrial loads.
Why field rheostat is kept in minimum position?
How to calculate cable size in HT AND LT
What is minimum phase system?
