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How many types of 3-phase induction motors are there?
One way is to add a capacitor and some extra field windings. Starters are needed because the starting current in an motor may go as high as 6-7 times its rated current. Some of the methods used for starting motors are, Direct online starters, Auto transformers, Soft Starters, Variable Speed Drives, Intelligent Motor Controls.
What are the two types of bearings used in motors?
ball type
What is the starting method of synchronous motor?
There are 5 types of starting in induction motors: 1) resistance variable method 2) auto transformer method 3) slip ring induction motor method Squirrel cage induction motor using two types of starting methods 1.Direct on line starter 2.Star delta starter
Three basic type of dc motor?
hair dryer, cars ,lawnmower ,generator ,computer ,pool ,cleaner ,tv ,plane ,cell phone ,fans ,heaters ,remote contrl car ,boat For DC: Permanent magnet brush motor; (uses fixed magnets for stator fields); toys and automotive use Shunt field motor; (field winding has many turns of fine wire in parallel with armature) small machines; Series field motor; (field winding has few turns of heavy wire in series with armature); high speed, high torque; Compound field motor; (has both series and shunt fields); large machinery, general purpose workhorses; Brushless DC motors (use electronics to switch stator windings on and off, and have permanent magnet rotors) small fans and light loads. For single phase AC: Split Phase induction motor (2 different windings connected to supply, cage type rotor) low torque, general purpose; Capacitor Start induction motor; (As per split phase, but with capacitor in series with starting winding) high starting torque, general purpose; Capacitor start, Capacitor run induction motor; (as per capacitor start, but different capacitors used for starting and running) high starting and running torque, quietest running; Shaded pole induction motor; (run winding and copper or aluminium ring around part of iron core of stator) small, cheap motors, low torque; Universal motor; (as per series DC motor above) high torque, high speed, poor speed stability. For 2 or 3 phase AC (star or delta connected) Polyphase induction motor (2 or 3 identical windings on stator, cage rotor) general purpose; Wound rotor induction motor (2 or 3 identical windings on stator, wound rotor connected in star to 3 sliprings and external resistance unit) very high starting torque, low starting current; Synchronous motor; (standard stator, and wound rotor connected to DC supply for 'excitation' of rotor field) constant speed, power factor correction.
Is the induction motors running current or its locked rotor current more important in generator selection?
Running current. The locked rotor amps are only seen at initial start up which only lasts a fraction of a second to one or two seconds.
What are two types of motors used for hermetic compressors?
Rotary and Induction
What are the different types of induction?
According to types ofrotors....Induction motors are classified into two types. They are1.sqirrel guage induction motor2.slip ring induction motor/...........
What are two types motors used for hermetic compressors?
Rotary and Induction
What are the different types of induction motors?
DOL(Direct Online starting) Star Delta starting Auto transformer starting Above methods are for squirrel cage induction motor Rotor resistance starting is used for wound rotor or slip ring induction motor
Why 2 phase induction motors are not used in industries?
A two-phase* system is archaic, and has been completely superceded by three-phase systems, so there is no demand for two-phase induction motors. (*A two-phase generator has two phase windings, displaced from each other by 90 degrees.)
An electrical component that works through induction is the what?
There are more than one electrical components that work through induction. Two examples are motors and transformers.
What are the two types of motors?
permanent magnet motors and series motor
What are the two types of dc motors?
permanent magnet motors and series motor
How many types of 3-phase induction motors are there?
One way is to add a capacitor and some extra field windings. Starters are needed because the starting current in an motor may go as high as 6-7 times its rated current. Some of the methods used for starting motors are, Direct online starters, Auto transformers, Soft Starters, Variable Speed Drives, Intelligent Motor Controls.
What are the two types of bearings used in motors?
ball type
Revolving field theory of single phase induction motors?
The revolving field theory of single-phase induction motors suggests that a rotating magnetic field created by current flowing through two windings (main and auxiliary or starting winding) produces a starting torque in the rotor. This theory explains how single-phase motors can operate without the need for a separate rotating magnetic field, as in three-phase motors, by using a split-phase or capacitor start design to generate a rotating magnetic field.
What types of geologic features form where two continental plates collide?
Fault ... ;)
