Answer / jasmin shamnad

both ac motor and dc motor operates on the same
principle .. both consists of a magnetic field and armature
winding... in a dc motor armature rotates and magnetic
field is statinary.. where as in ac motor armature is
stationary and field is rotating

Answer / er. ankush miglani 9718151073

AC MOTORS: ALTERNATING CURRENT MOTORS
DC MOTORS: DIRECT CURRENT MOTORS
DC MOTORS R SELF STARTING
AC NEED STARTING EQUIPMENT
DC R ONLY 1 PHASE
AC R 1 AND 3 PHASE

Answer / 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

Answer / das

dc using carbon bruch whereas ac have no

Answer / harish kumar.g

The Difference Between AC and DC Electric Motors
[Automotive] There are two main types of electric motors.
There are direct current or DC and alternating current or
AC motors. The reference of DC or AC refers to how the
electrical current is transferred through and from the
motor. Both types of motors have different functions and
uses. Dc motors come in two general types. They can have
brushes or be brushless. AC motors, as well, come in two
different types. They can be two phase or three phase. The
differences in DC and AC motors are sometimes subtle, but
these differences are what make one types better for a
certain use.

what happen if we give square wave instead of sine wave to the transformer

8 Answers  

how snubber circuit works to protect switching devices?

2 Answers   Electrotherm,

what are the basic concept to design a out door Substation?

1 Answers  

why CT output is always raetd 5.regardsof primery curre.

3 Answers   ABB, BARC,

In what voltage EHT works(133/132/33/66kv?

3 Answers   Adhunik,

what is the difference between electrical wire and electrical conductor?

4 Answers  

electric shock is due to current r voltage.?

12 Answers   National Steel, TCS,

Define open loop control system.

0 Answers  

what is the purpose of commutator in DC motor?

3 Answers  

WHAT IS THE DIFFERENCE BETWEEN VOLTage and potential diff

5 Answers  

why earth fault current is always less than the o/c

2 Answers  

nwhat are the main Components of servo motor?

0 Answers   BARC,