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what will happen if secondary of potential transformer (220kv/110volt) of any metering core or protection core (cables) of any phase got earthed??
1 4544Pls.could any one Clarify the following with an example. 1.At What condition Close on Rise and Close on Fall Pressure Switch contacts are used. 2.If Pressure is abnormal as per set pressure,if connecting Terminal of pressure switch breaks,how the voltage extends to Relay base. 3.Are these contacts come under fail safe philasaphy.
1 4489how to set calibration range in a DP transmitter to measure level for a closed tank and for an open tank,and also please explain me how to set calibration range for a DP flow transmitter in a line ?
1 9431While giving Power Supply of 24 VDC to a Transmitter,why Shield Terminal is connected either at Transmitter or at ISB.Why not Shield Terminal connected at both ends.If the Reason is to avoid Noise interference,which type of noice that is interfering.Is the Noice from the 24 VDC supply terminals or from any external source.
1 5649what is the pulse and audio frequency transformer? what is different between induction regulators and tap changing transformer?
2111A 3-PHASE TRANSFORMER IS USED TO STEP-DOWN THE VOLTAGE OF A 3-PHASE, 11KV FEEDER LINE. PER-PHASE TURNS RATIO IS 12.FOR A PRIMARY LINE CURRENT OF 20A, CALCULATE THE SECOUNDRY LINE VOLTAGE, LINE CURRENT AND OUTPUT KVA FOR FOLLOWING.A)STAR- DELTA.B)DELTA-DELTA.
3061how much st. steel is required for staging of concourse slab of a elevated metro station allowing through traffic .
CCCL,
2733Dear Friends, Need your help for connecting APFC panel, Quotation : I have 2 No’s 1000 KVA Transformers, both transformers are having separate APFC panels, ( Tr-1,400KVAR, TR-2,450 KVAR) Now I want to stop One transformer, present load is 650Amps, Max, So One transformer is enough, I have switched OFF TR-1, but PF is not maintaining properly, its 0.5, So now I want to connect TR-2 APFC also in TR-1 Loads, Can any one answer for my Quotation with drawing, how to connect TR-2 APFC panel in TR-1 Loads,
L&T,
4 6640Hi to u all : Friends: Why when operate on 2 phase welding machine the power metr goes reverse ?? the meter is god on other loads. thanks
2 4561
can any one provide me a connection wiring diagram for a DG set control panel along with BOM?
What is the function of flux in welding?
Does magnetomonopoles exists? one maxwell equation strongly suggests no, but how about their existance in plasma?
How are microarrays related to dna?
What is a process flow diagram?
What does allotropic mean?
State differences between PLC and logic cards?
why can we use cosine wave instead of sine in ac supply as both have same rms vale and ripple factor
can you give me the solution of iiie
Tell me what is fold line?
Does the direction of rotation of d.c. Shunt motor would get reversed if the armature current and field current both are reversed?
why qpsk is done for 45 135225315 not 0 90.270 360 degrees "degrees why "
What is the difference between Droop vs Isoch Control?
What are the objectives of Aerodynamics?
what are register variables?what are the advantages of using register variables in c language?
