how test transfomer(3 phase75kva) by megger

2066

1)How much current can a 3-1/2 core 100 mm wire carry? 2)What are the special cables required for explosion proof wiring? 3)In case you do not have coal and salt for earthing, how can you achieve good temporary earthing? 4)One horse power single phase motor is more likely to get hot than a one horse power 3 phase motor. Is it true or false, if true why? 5)What are the different types of soft starters for large motors?please explain?

4603

we have 2.2kw,Y,3000rpm motor but 6leads found in TB what happen if we connect in delta?

1839

use of PIR in ehv breaker

2117

what is two point starter?

2070

I AM FROM ELECTRICAL ENGINEERING ? I AM ASPIRING FOR "BHEL".HOW I HAVE TO PREPARE .ON WHICH TOPICS TO BE CONCENTRATE MORE.PLEASE GIVE FULL DETAILS OF WRITTEN EXAM.

2093

What types of high speed CMOS circuits have you designed?

2097

Briefly define and explain the following different types of Pulse Amplitude Modulation (PAM) with some examples. i) 2-PAM ii) 4-PAM iii) 8-PAM iv) 16-PAM v) Quadrature Amplitude Modulation (QAM)

2092

Earth leakage relay basic knowledge principle

2138

what material is the electrical housing wire made of? is there any difference for the telephone lines?

1935

Which motor connection is preferable star-delta or delta-star?

1035

what is the interrelation between voltage current torgue speed and magnetic flux in case of different types of electric motors

2042

how can we save enegry by using VFD for Resiprocating Air compressor which is having more unloading running hours

2256

Sir, My doubt on cable sizing calculation, Load:74 KW calculated cable 1 run 50mm2. Now client asking us to reduce cable size by increasing runs. Sir, My question now when my mind strikes with 2 options 1) Divide load 74/2 = 36 and calculate cable for 36+36 making it 2 runs or 2) Simply i can divide 50mm2 /2 ie. 2 runs of 25mm2 Please suggest me sir

1868

what is ramping rate of generator

2025