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 Categories >> Engineering >> Electrical Engineering
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Question Asked @ Answers Views     Select
Is it possible to use a S1 duty class motor for crane application (S4)? If not, why?    0  10
what is buffer resistance starter.?.What is the working principle and where it is used..?    0  8
What is the differance between transformer neutral solidly earthed and transformer neutral earthed through resistor?    1  20
how much maximum load a 2 core (Single phase) 16mm aluminium wire can take ?    0  16
How to Decide the Location of Earth pit for Compressor in Oil Depo? and How to measure the resistance of earth pit Pls explain me with the help of Circuit Diagram?    0  14
Electrical Engineering    0  15
What is motor type DG starter    5  35
why secondary of transformer always grouded?    0  22
How may I enrol or get admission to your program?    0  18
how to calculate unit consumption on 3phase 380-415 v0lt kilowatt motor eg ( 55kw,380v,3phase 50-60hz)    1  28
what voltage generated earth tester meter when we testing the Earth point ?    1  27
how we are desining 63.5 ohm resistor for NGR of alternator?    1  27
10 Mtr Hight of Lighting Arrestar how much area coverd??    0  22
i have done diploma and btech in EE and live in Chandigarh so kindly help me how can i make my competency certificate in my area.    0  15
what is the mean of short circuuit current ( for ex. 50KA)?    2  29
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Un-Answered Questions
 Question Views   Select
How many types oil using in transformer ? How many letars using in transformer..? 149
how flow current in 220 kv line to line 200
as a electrical student why should i hire you? 131
What are the classifications of heating element? 182
what is mean by PIR in circuitbreaker and give me detail of that? 912
what is the transiant condition in alternator? and how it can be prevanted? 110
what is buffer resistance starter.?.What is the working principle and where it is used..? 8
is it necessary to earth the rmu before cutting off the transformer winding?if yes why? 186
When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this< 171
can anyone please help me to find the rupturing or breaking capacity in KA of circuit breaker (MCCB,VCB,ACB etc) of HT and LT side of a distribution transformer...please help with detailed step by step answer...thank you 64
Hi Suppose we have a wye/wye transformer which is grounded at both sides,in this situation, do we have ay ground transformer? in other words, ground transformer can do any thing more (while we have nuetral wire in both sides)? As the last question, what about 3rd harmonic? we have two choices: first using wye/delta transformer + ground transformer and second using wye/wye earthed the former choice, we dont have 3rd harmoonic at the secondary side but what about Yn/yn conection? do we suffer from 3rd harmonic in the Yn/yn connection? 143
What is a fuse? How does it work? What are materials used? 93
what are the functions & ratings of panels mentioned below: 1. Main LT Panel(MLTP) 2. Motor Control Centre(MCC) 3.Feeder pillars 4.Busducts 130
why incomer bay is required before transformer bay if there are more than 1 nos. of transformer bay. 226
What is class 2 coordination ? 396
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