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How would you supply a single house hold load from a 3-phase supply coming out of a sub-station?
4 8678How would you supply power to a village which is very far from a sub-station and has only a 11k?
4 8480At site, we have 30Kw motor (3 phase, 400V,50Hz) and FLC 54A as per the nameplate. At the time of starting it draws 840A instead of 390A (7.2%). As per the data sheet also its 390A starting current. it thru a dol starter from the MCC. can anyone tell what is the problem in the motor
ME,
5 11216What is the Derating factor of power cables when exposed to direct sunlight in (both PVC & XLPE).
1 5476why it is not advisable to run low rating (19KVA) DG sets in parallel for long durations even though they are provided with droop ckts (QDC)
1906hai iam arunkumar. i have applied for an section enginner in rrb. i want lat 5 years solved question papers. if u have please sedn it to arun30682@gmail.com
RRB,
1822Post New Electrical Engineering Questions
What is the working principle of MIG welding? and its out put Voltage?
What are the effects of electrical faults?
Please help me regarding my one concern. - During earth pit testing we noticed that the Clean earth pit and dirty earth pit showing continuity (Resistance value - 5ohm) . I want to know that if both earth pit have separate location and there is not internal looping between PIT then why such continuity is showing on it . Because of this issue the field side all earthing point showing short. In PLC panel we are providing two types of earthing cable which is coming from separate earth pit (Clean and Dirty earth pit) because of earth PIT showing short our PLC is not complying spec . please help regarding this issues.
WHAT IS THE USE OF PIG TAIL IN WINDOW CT ?
What are the insulation standerds for eg H clase and how many insulation standerds are there and its standerds??????
what do u understand about FACTS? how they are useful?
for a 400kv t/m line with 10 ampere current will corona occur?
can u give me a brief idea about power line carrier communication ??
Do you know what is dry-out test in x'mer
Show the schematic arrangement of diesel power station layout and give its principle of operation.
This is reqd for a 1MW Solar power plant..We have 2DC outputs from the solar panels Connected to 2INVERTOR panels.. Output from invertor is 3ph,280v,500kva,50hz.These are connected to individual ACB.This has to be stepped up to 11KV ,1250KVA SYSTEM.Now can I use (1) one more ACBTO GIVE A COMBINED OUTPUT OF 1000KVA,280V & STEP UP THE OUTPUT BY USING a single two winding 3 ph transformer 11kv/1250kva. or (2)use the two outputs and connect to one three winding transformer of above rating..Pls suggestwith details.
Electronic circuit
1.What is captive power plant? 2.What is national grid?Give brief idea.
What is the typical enclosure type used for Indoor switchgear / Outdoor switchgear Units? - In Onshore / offshore Units?
what is the difference between electrical choke and electronic choke?
