wwht is wave trap used in ht line4 4245
why use celling fan wing is two or three ?2 3333
How can we calculate the KVA rating of a Distribution transformer from its core details?
How to calculate no of Lighning arrestors are required for protecting 50mX 50m*20m cubical building and locations of LA?
What is the min.& max distance between two earth spikes is required for measuring earth resistance of an earth pit? Is the manufacturer of Earth tester decides this? Pls explain.3 7097
We use ungrounded DC system (220V/110V) for control and protection system in substations etc. Suppose we have long 2 core DC cables running from our DCDB in control room to the load (length of around 2 to 3 km). Do we need to protect these long DC cables from earth leakages or not? If yes how?5 8730
explain in detail HV & LV bushing connection in power transformer (110 / 11 kv 16 MVA)6 15230
How can I model an open-delta ground transformer for a network supplied by 4 unit GTG and power transformer in ETAP?12848
When should I use earth leakage circuit breaker for incomer and when should I use it for each feeder seperately?1 2240
How can I communicate with an Areva MiCOM P121 relay by RS485 port? In other word, which command can I send and what information can I have recieved? please send some refrences, please. thanks3 8184
the distance from my office to d.g is aprox 400mtrs and voltage drops ibn my office near about 40 volt what should i do p[ls suggest.6 4042
1.what is the funtion of chiller primary & scondary pumps. 2.what is the use of distribution lines & Types. 3.what is the use the thermal power stations & how much capacity.1145
What is q factor?
if 2 coil of 1000W connect in series and 200 v is applied across it . then what is the total power of coil when coil have only resistive load .
Calculate torque developed by the 3-phase, 5 H.P., 4 pole induction motor runs at 1500 rpm A 23 N-m B 21 N-m C 10 N-m D 0 N-m
Why do we need interlocking in a HT metering or Ring main unit switchgear?
1.WHAT IS A SMART CAPABLE DB ( DISTRIBUTION BOX) ? 2. HOW TO DECIDE THE TYPE OF DB TO BE USED ( RECESSED/ PLUG TYPE/ SMART ETC ETC? 3. WHAT IS MILLENEUM BUS BAR USED IN DB? 4.DIFFERENTIATE MCCB AND MCB.
How would you relate your key competencies to this position?
what is difference between elr and R eartl realy.
66kv under ground cable how to layaing in ground any special case two ckt r runing
what is the advantage of connecting capacitors in delta than in star?
Define settling time.
PLEASE TELL ME ABOUT QUESTION PAPER OF UPCL ENTERENCE EXAM.
what is earth-fault?when it occurs? to check where it occurs what type of test should we do?
for hipot test on 33kV busbar, we will test on 70 kV or 56kV, what is the acceptable leackage current?
we need a ntpc previous papers
could you measure current in parallel?