Answer / santosh

Three phase induction motor is a self starting motor where
as 1-phase cannot.

The reason is in order to intiate the roating action there
should be rotating flux .In single pahse you cannot have it

Answer / deepak thakur

visually defferance in 3 phase &1 phase motor
3 phase have 6 connecting terminal
1 phase have 2 connecting terminal

Answer / manish gupta

there is much difference in single phase induction motor and three phase induction motor. First,single phase induction motor is not self starting it requires some capacitor to create voltage difference to start.While three phase induction motor is self starting it do not require capacitor to start.
second single phase induction motor is used for small load eg. fan etc. while three phase induction motor for large load eg. lift,elevator etc.
third single phase induction motor uses less power while 3-phase induction motor uses much power.1-phase are smaller in size while 3-phase induction motor are bigger in size

how the rotating magnetic fieldis produced in induction machines??? give the correct explanation.is there any mathematical expression for the same?

1 Answers  

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what is rated speed?

4 Answers   Actavis,

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How many watts required for single phase power supply?

4 Answers  

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why are you use the crgo core lamination in transformer

6 Answers  

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how to find insulation resistance of a generator(11kv) by theoritical formula??

1 Answers  

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In Delta connected capcitor bank, One bank failed due to some problem. Can we connect Open delta capacitor bank to 3 phase motor. The motor voltage rating is 6.6KV. IF yes what changes will happen?

1 Answers  

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how many ampere Maxmium load given on a 10 kva DG set?

3 Answers  

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state the functions of different parts of star delta starter.

1 Answers  

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how to calculate the loss tangent of electrical cables

0 Answers  

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why capacitor is not discharged phase to body

1 Answers  

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How star and delta connections inherently eliminate triplend harmonics?

1 Answers   Blue Star,

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As we use capacitior bank in 3ph ckt for improvement of PF, why not we use capacitor in single phase domestric use, at our house their are many inductive equipments,like fan,mixer,tube choke,air conditioner they also draw PF... by using capacitor can they improve PF. if yes--what are advantage and how to connect a capactor in single ph,and which type of capacitor if no- what are disadvantages.

0 Answers  

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