Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Why earthing transformer used in Distribution Sub-Station?

3 11040

how to calculate the voltage drop in electrical cable while laying cables?

2 4642

when ur using single phase type of load for a 3.5core power cable .Why neutral is .5 and how much current in the neutral if we consider neutral as a reverse path for three phases.

2 4678

what is the working principle of dc motor & its application ?

3 6662

what is the difference between brush & brushless dc motor explain its operation ?

1 4763

What is partial discharge in power cable?

1 2408

why rating of motor in HP ?

2 4818

following are the questions asked in interviews: 1) Considering the short circuit fault, which switchgear is preferable, SFU OR MCCB? Which operates faster? whicg one is popular in Indian Market and why? 2)Define SCPD. What is type2 coodination? 3)Why the contactor rating is higher for the fuseless selection than for fuse selection? whether the ratinf of SFU or MCCB remains the same in both the cases? 4)If the HP rating is known then can you calculate the ratings of L.V Switchgear(SFU/MCCB, contactor, OLR) without using the selection chart?

1591

Is it possible to download the Siemens Selection Chart(TYPE 2 coordination) for 1) fuseless selection 2)Fuse selection

7644

how to calculate cooling requirement of datacentre from electrical load?

1835

Is any generator is developed which is operated with out diesal or other expensive source?

1619

In a house wiring why we are using only one neutral wire and so many phase wires from the main board, when the load is common for both wires?

3 15188

plz tell me Motor IP formula

1543

plz tell me about detailof induction motor Slip

2 3898

plz tell me about BACK emf and how it generates?

2 4438


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

how to minimize earth resistance upto 2Ω, if the resistance is 6 Ω ?

1426


What is Meter MF if External CT Ratio is 150/1 , PT Ratio is 132/110 Meter CT Ratio is 200/1 & Meter PT Ratio is 110/1

1310


7- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?

1747


how to calculate the no load current in transformer?

1954


hi....I am from india..i have completed my engineering in electrical and electronics field with 58.4% and my IELTS score is 5.5 bands....Recently i received my I-20 in computer and information science from Troy university in Alabama.On 18th i have a visa interview can u please tell me what type of questions i have to answer ??????

1381






What is dielectric loss?

619


How to calculate Temp from Resister from PT100 equation,

1183


what will happen if earth of 33 kv cable (earthed system) is not connected to earthing pit?

1513


How can maintain our H.T. motors used in cement plant. please send me procedure.

4646


what are the breakdown voltage rating of mini- curcuit'transfarmer!

1643


why we are using earth pit in sub stations.?

1535


How to calculat the ratio of HT\LT in energy meter

2087


What is icu and ics in Acb and how many time icu or ics passes from breaker?

1023


how ceiling fan worked?

1459


Is it acceptable of installing an earth pit in planters area where bare copper cable, earth rod and connection are susceptible to corrosion due to water?

1450