why we using capacitor in single phase motor ?

14 Answers  

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How to decide and select the different earthing wire size for the different types of earthing

0 Answers   Suzlon,

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I just purchased a 4 position cam switch to be used to operate a 3-speed blower motor. The motor is a 10 amp motor and has 3 wires that are used to control speed. The cam switch was rated at 660V 20 amps but when I received it, I noticed that it has AC-15 operational current rating (Ie) of 4/5 amps. If I am reading the label correctly. the 4/5 amps is related to 440v/220V (Ue). Other ratings are AC-3: 5.5A, AC2: 7.5A and AC-4: 1.5A. My questions are 1) Is it safe to use this switch with the motor I have 2) what is the difference between the 20 amp Ith ratting and the Ie operational ratings?

0 Answers  

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ward lconard control

5 Answers   Bhel,

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What are the functions of temperature scanner in power transformer?

0 Answers   HCL,

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why the rotor is outside in case of ceiling fan?

1 Answers   HCL,

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What is the control action?

0 Answers  

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what is a pulse transformer? how rise time of pulse changes when ever the voltage changes?

0 Answers  

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What is difference between MCC,PMCC,PDB?

2 Answers   Cipla, JSW,

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If ROC does not lies inside unit circle,then ? a) Fourier transform converges b) Z transform converges c) Hatly transform converges d) Colpit Transform converges.

0 Answers   CCP,

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Myself completed B.Tech ECE in private university but i am working as an testing and commissioning engineer in electrical field whether i am eligibility to apply electrical licence.

1 Answers  

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why a single phase motor of same rating takes more amps than the three phase motor? as single phase motor at 230v takes 5amp per HP while 3 p motor takes 2.5amp per hp at 230v.

1 Answers  

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