Answer / tj

the requirement for the excitation is of constant pole
electromagnet not pulsating pole em, as this only can lead
to pulsating emf on armature.

Answer / manikumar agcet

If excitation is dc then it is
easy to vary output voltage&
powerfactor.

why single core HT cable need only one side earthing?

2 Answers  

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Petroleum jelly is applied to the terminals of the lead acid battery is to prevent?

2 Answers   KSEB,

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what are the applications of TIG welding

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why do you give the dc supply to field of alternator

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0 Answers   BSL,

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what questions are asked in the interview for the post of an electrical maintenance engineer in FMCG companies?

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What magnetic circuit is formed in berry-type constructions and why?

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Explain the working principle of Synchronous Generator and Assynchronous generator?

0 Answers  

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what is the meaning of the symbol << >> put in transformer drawing

0 Answers   TATA,

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A heater capacity is 3.0 KW on 415V . if supply voltage is 380Volt . what is heater capacity on 380volt . and how calculate and give formulas . Prakash veer singh Roto power Engg.

5 Answers  

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What will be the impact on motor performance if a LT motor is rewound with changed motor winding data as given below:- Original winding data: total 04 wires = 02 wires of 17 SWG + 02 wires of 16.5 SWG. Changed Winding data: total 03 wires of 15.5 SWG wire size Motor rating: 160KW, 740RPM, 415V, ID FAN application. Normal Running Current = 95% of FL Current.

0 Answers   NFL,

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