difference between ac motor and dc motor
Answers were Sorted based on User's Feedback
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
Is This Answer Correct ? | 58 Yes | 17 No |
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
Is This Answer Correct ? | 51 Yes | 23 No |
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
Is This Answer Correct ? | 19 Yes | 6 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.
Is This Answer Correct ? | 32 Yes | 46 No |
1. What is differential relay? How it operates? 2.How to calculate the Short Circuit Impedance in Transformer? 3.What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works? 4. While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply? 5. What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer? 6. Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example? 7. Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient? 8. What should be the minimum and maximum ohmic value for earthing? 9. Why DC Currents are not used in transformer? 10. What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?
Can u tell me the name of books of transformer testing?
Why only plate(copper) Earth pit given for neutral earthing? why not pipe(G.I) Earth pit?
tell me about vfd
advantage of using 110v than 230v
what is the working principle of three point starter of dc motor?
1 Answers Ashok Leyland, Cap Gemini, Infosys, Just Dial,
I have 2 Nos of 2500kVA 33/0.415V cast resin transformers. How to decide on ampere rating of HT Panel? Also advise me how many panel RMG i have to consider whether 4 panel ok?
WHAT IS THE DIFFERENCE BETWEEN A DC MACHINE OUTPUT AND RECTIFIER OUTPUT...
how to calculate the current if i know power in MW and voltage 11kv/415v and also want to know that incoming cables for trnsformer
6 Answers Daikin, KOC, Reliance,
define frequency ?
Why DG self motor winding burnt out?
What are the different ratings of the fuse units for different distributions at your organization?