A 400 V, 50 Hz, Δ connected synchronous generator has a field reactance of 0.1 Ω and armature resistance of 0.015 Ω. At full load, the machine supplies 1200 A at 0.8 pf lagging. Under full-load conditions, the friction and windage losses are 40 KW and the core losses are 30 KW. What is the machine’s overall efficiency? Ignore any field circuit losses.

1918

How two nos. 130 kw D.C motor get synchronise using D.C drive.

2130

Name the component u would expect to find in a switchgear assembly?

2032

What is phenomenon of electromagnetic induction and how it works?

1072

What is the maximum number of swithes that can be connected in series up to down stream point in an LV Distribution system?

2011

what is a bus post insulator? explain its application in a substation.

12603

hi friends ,iam working as genset AVR service engineer in electrical field from past 2 yrs throughout india . i plan to shift in some other job without travelling in same field because i con't travel,i dont know what i do for that so please guide me what job is suited for me,how i can serch the job please anybody helpme iam totally confused

2024

What is cathode ray oscilloscope (cro)?

1122

1.what is difference between ATS & STS main use. 2.what is difference between ACB& VCB With symobles,and main partes, manimum range. 3.How many types of relays and main function.

6304

What are the application of filter?

1065

how we can do the insulation on secondary of ct explain and so that tan delta will within limit

1930

Pls explan the OLR setting in VCB at HT yard

2688

bsnl tta exam question

1874

How can we select suitable capacity generator for three phase load (inductive load) and how to take study analysis in 3 three phase load system ?

2148

what is the IPC ? & what the uses ?

1498