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Power Grid Electrical Engineering Interview Questions
Questions Answers Views Company eMail

1.Why hydrogen used for cooling in generators 2.Why electrical equipment protected by ground 3.Why earthing for transmission line 4.What is rms value of half wave rectified square wave. If Rms value of actual wave 2amps.

1 2610

1.what is the contact resistace of CB ? 2.radioactivity should be mesured with---------?

3 5753

what is STUB protection in tranmission system and switch yard area?

9 71578

what is the difference betn earthed and unearthed cables which is commanly used why?

2 6577

What is the difference between AMF panel and DG Synchronization panel? please define the working of both the panels?

3 32952

which electrical supply used for long distance traction 1.1-ph 22kv a.c 50hz 2.2-ph 22kv a.c 50 hz 3.dc vtg 4.1-ph 22kv 150 jhz

3 4904

name the famous power plants present in A.P

1 2154

what will happen when power factor is leading in distribution of power?

10 20541

what is the order of mgnetiation current in a current transformer of 1000A/1A ratio?

2 4602

can we connect both delta and star to the transformer secondary and for what reason?

5 7665

How would you supply a single house hold load from a 3-phase supply coming out of a sub-station?

4 7232

How would you supply power to a village which is very far from a sub-station and has only a 11k?

4 6973

diff.between servo motor and ac motor

1550

What happens if the capacitive reactance of a transmission line is very high?

5 13882

What is R/X ratio? I have heard that this ratio is higher in a radial distribution system.Why is it so? I would appreciate a word. Thank you

1 20008

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Un-Answered Questions

How do I download joomla templates?

74


What is big-bang strategy?

559


What is dedicated processor assignment in operating system (os)?

827


How can claculate to attain the desired PF in the line ( HOW Much KVAR is required ) Pls Give the formula? Equate Petrochemical 0 1 how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec. 0 1 What will happened. if we feed 3phase supplay to the stater with out insert the rotor. How much current will flow through the stater winnding? Equate Petrochemical 0 1 What is required of exietation to the alternater. 0 1 why star point of HT motor not earthed? Equate Petrochemical 0 1 Why we are getting low voltage in star connection? Equate Petrochemical 0 2 What's ND relay & it's functions? Equate Petrochemical 0 2 How instantanious short circuit current is calculated? its formula? Equate Petrochemical 0 2 What is servo Motor? What's the advantages of this motor over Induction motor? Equate Petrochemical 0 2 What is core CT & it's function? Equate Petrochemical 0 3 what is meant by star/delta voltages as 440/220 in a 3 phase induction motor, and why it should be connected on STAR IN 3 PHASE SUPPLY L & T 0 4 What is required of exietation to the alternater. KNB 1 23 what is the design voltage for 6.6KV 2000 KVAR HT capacitor? Consultancy 0 3 Pls explain about vfd control?Where it is used, Give some example? siemens 1 22 Please explain me abt PQ diagaram in the power sector. 0 9

1601


What is an exon?

314






How was the pre-placement talk useful?

700


What are the different types of services provided to the customers?

681


Explain what is the relation between rxlev [0 to 63] and rxlev [-110 to -47]?

539


what is entity graph in entity framework?

613


We are planning to synchronized DG's with our captive plant in the event of black start of plant, but before sync we checked voltage of DG with our plant voltage and it varies from 5 V to 450 V. So in this condition how we can sync DG with plant ?

1085


How can you compare a neural network that has one layer, one input and output to a logistic regression model?

116


What is += in python mean?

446


what is the use of client bin folder?

5


How to make a new directory in unix?

536


What are the steps you can take to avoid imbalance in centrifuge?

792