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A 2-Pole motor runs twice as fast as a 4-pole motor. The 2-pole motor has 2 windings at 180 degrees apart and the four pole motor has four windings at 90 degrees apart. The rotor tries to move from pole to pole with each half cycle of the AC current so the motor no-load speed for 60 cycle current is 2x3600/#poles. This is 1800 rpm for a 4-cycle motor and 3600 rpm for a 2-pole motor.
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Why pole changing method of speed control of three phase induction motor can not be used?
because its possible only where pole changing arrangements are given and pole changed motor draws more current then its actual pole which damages its windings.
How can a shaded-pole motor be reversed?
Yes, the rotation of a shaded pole motor can be reversed. It is advisable to only attempt this on a small motor and if you have general mechanical and electrical knowledge. The simple and direct explanation is one has to flip the stator. To do this the motor must be disassembled to a point at which the rotor can be removed. Once removed, turn it end over end and reinstall. Done. Note that the bearing housing ends will likely have to be switched as well.
Height of electric poles in India?
height of electric pole in India is 8m in residence area.
How do you calculate the poles of motor?
pole mortor ms 225-40
What is difference between TPN Mccb and 4P Mccb?
Basically tpn means the tripple pole + nutral protectin mbc .
Why motor need pole?
electric and magnetic go hand in hand. One needed to produce other. Motor no magnetic pole, motor no work.
What part of an electric motor repels the pole of the permanent magnets?
commutator
What part of an electric motor repels the pole of permanent magnets?
commutator
What is the relationship between motor POLE and RPM?
Relationship between motor rpm and no of poles
Is the tekin SC4X motor a 4 pole motor?
it is a 20 pole motor
What kind of oil in electric pole saw?
SAE 30 motor oil if the temperature is between 30 & 75°F.Colder use SAE 10 oil.Warmer use SAE 40 oil.
What are the benefits of a three-pole motor over a two-pole motor?
A 3-pole motor has a smother torque curve.
Why are the electric lines are on top of the pole?
Electric lines are on top of the pole to keep them out of the way.
2 pole motor vs 4 pole motor?
A 2-pole motor has about 1.5 ft-lbs of torque per horsepower where a 4-pole motor has 3 ft-lbs of torque. also the speed of a 2-pole motor is twice that of a 4-pole motor. The speed of a motor is determined by: speed=(120 x freq)/no. of poles At 60 Hz, a 4-pole motor is about 1800 rpm where a 2-pole motor is 3600
Which motor used in refrigerator?
shadded pole motor
How does electric current travel?
the flow of electrons in a metal is called electric current . the conventional direction of electric current is shown from positive pole to negative pole
According to ohms law Why a bird does not feel electric shock while sitting on the wire of electric pole?
There is hardly any voltage between the bird's two feet - or between the feet and other parts of the bird's body.
