Answer / praveen kumar

Amp will high

Answer / asit

larger air gap is equal to higher reluctance so lower reactance  .so i=v/z(z=r+xl) so currnt will be high.thats why no load current in case of induction motor 20-30% of full load current as compare to transformer that is 2-5% of full load current 

Answer / rinkesh

Large air gap .....more reluctance. ....need more current

DIFFERENCE BETWEEN POWER AND CONTROL CABLES

9 Answers   NCC,

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State thevenin’s theorem?

0 Answers  

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Based on CPI/CGPA they shortlist the candidates & than directly start Interview so there is no Written Exam or GD Only PI.Interview held @ MNNIT , ALLAHABAD On-Campus on 6th,Aug, 2007 & the Questions asked to me by Interview Board ( 4 People) are from HR/SummerTraining/BTP/Subject-core, POWER SYSTEM & MACHINE. time duration of I/V is about 15-20 Minutes. HR- Q.1 Name,hobbies & About family background ? Q2.What u know abt NTPC ?? Q3.Why u want to choose NTPC as ur Carrier's starting i.e power sector not any other Oragnisation or sector ?? Techincal Questions- Q1.What is the reason for transformer Noise ?? Q2.Which material is used for making Transformer oil & How u measure its dielectric strength & Name the test ? Q.3 Which Machine u will prefer 2 use if flammble gases are coming out at a place & why ?? Q4.What is relation b/w Transmission Lines & Communication Lines ? Q5.What is the maximum capacity Synchronus Machine & total powerGeneration in our country ? Q.6 In india Power generation is at 50Hz while in America its 60 hz ,why so ?? Advantage or disadvantage ?? Q.7 Maximum Generation Voltage in india ? Q8. What is the Voltage regulation & why its required n how much is permissible ? & causes of voltage variation ?? Q.9 Why electric shock is feel ?? n in a Electric Train why we didnt feel that ? Q.10 Have u seen/ experience of any power plant/ industry related to the power sector ? so these are the questions which not too diffcult i think was asked to me.

6 Answers   NTPC,

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why should we have to maintain pf in our site 0.9????????

3 Answers   Dalkia,

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What is the difference between Neutral and Eatrh?

8 Answers  

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what is difference between RCB,RCCB &RCBO?

3 Answers   ABB,

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What is the Difference Between choke & ballast

3 Answers   ABB, ICS Integrated Computer Solutions,

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What is the permissable nutral current of three phase system as per IS standards?

0 Answers  

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if we supply to secondary winding how transformer work?

2 Answers  

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What is electrical grounding?

0 Answers  

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what happen if the secondry winding of the transformer is having less no of turns compare to the primery winding.

2 Answers  

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what r the preventive maintenance of air compressor

1 Answers   Jindal,

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