Answer / bijulal

capacitor using for all induction motor because of
improving the power factor. But incase of single phase
motor it is using us staring capcitor.

Answer / ramesh kanna

capacitor using for only single phase induction motor
because of improving the power factor

Answer / waseem

In single phase induction motor,capacitor is use to produce two phases so that rotating magnetic field can be produced. This is main purpose.

Answer / sayed asef

capacitor used only for single phase motor to increase its
PF ,as PF increase its voltage increase and as well as
starting torque increase.so thats why we called capacitor
start motor.

Answer / a.anantharaj

To improve sinwave and power factor.capacitor used only
single phase motor.

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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There is one 40MVA oil cooled transformer (yet to commission), filled with 95% oil and we are trying to fill 5% Nytrogen in that transformer so that there should not be any foreign component inside. But even though there is no leakage, nytrogen is not withstanding inside transformer, within a day or two pressure guage is showing 0. Why is it soooo? Pls reply.

1 Answers  

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which loses are in transformer .explane each loses

4 Answers  

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what do u mean by bus bar?

6 Answers  

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how can 3phase motor speed can be controlled without vvf drive?

1 Answers  

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what is the difference between R Y B windings in three phase.does it differ by construction or by number of windings?Explain the difference between them.

3 Answers  

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When a 25kV line touches the train, will passenger get shock?

3 Answers  

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What do u mean by Line voltage Monitor?Where it is used in a Power system?

2 Answers  

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i want to know about psu exam eligibility critaria?

1 Answers   ISRO, PSU,

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Who we calculate the generator NGR resistant, generator voltage 11 KV ?

2 Answers   ABB,

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What will happen when we will connect lamp in between phase and earth. 

3 Answers  

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How to calculate Earth busbar size & what is the procedure we make for determine that?

1 Answers  

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