What is the tube exial fan?

0 Answers  

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in soft starter system for 375 KW 3 ph induction motor for multi stage vertical pump, two thyristers failed causing shorting of thyrister. the motor winding failed while starting.What is the cause and what is the effect in above case

1 Answers   KPCL,

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How we can change the direction of rotation of Induction motor? Prove it using graphical methods.

4 Answers   Adama University,

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what is back emf?

4 Answers   Bhel,

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Questions :- HR- Q.1 about yourself & family background ? Q.2 Why u choose Power sector as ur carrier starting not any other sector ?? Q. 3 What think abt NTPC ? Techincal Questions:- Q.1 about Vocational Training……What u did , see the main equipments….etc Q.2 Why a transformer Noise during its running condition ? Q.3 about transformer oil material & Test name for the measurement of its dielectric strength & wht will u do if its dielectric strength goes low ? ……..some discussion type ? Q.4 What is relation between transmission lines & Communication lines ? Q.5 Which Machine u will prefer to use at a place where flammable gases are coming out & why ? Q.6 how fault in an electric system is detected & hw protection of equipments is done ? Q.7 Why we didn’t feel electric shock in an electric train ?? Q.8 Anything u want to ask from us ??

44 Answers   Akona Engineering, Bhel, BSES, Cranex, DRDO, JCB, NTPC,

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why field winding is placed on rotor winding not on stator winding in case of synchronous machine?

13 Answers   HAL, TATA,

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How can i modify the design of 3 phase induction motor to be as 3 phase synchronous motor??

2 Answers  

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what is electricity

4 Answers  

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requirements for making parallel operation of Uninterrupted power supply

2 Answers   Emerson,

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1. what is usage for power factor in industries?? 2.why we need to monitor power factor??

4 Answers   Havells,

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when transformer in load condition neutral earth testing wheater we can do it or not

1 Answers  

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During underground cabling in landscape area what did we cover the cable with to prevent the electric shock & protect the cable?

0 Answers  

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