what purpose of the percentage impendance in transformer3 3287
how to calculate the mf of kwh meter,if ct the ratio on meter is 100/5A2 42137
Generally in d.c. circuits the direction of current is from possitive to negative.In a.c.circuits what is the direction fo current flow4 3166
1. what type of winding of slip ring ac induction motor rotor and why. 2. how the heating element use in two phase (415 volt)and what rating of element, you prefered.1 3134
how the magnetic flux is said to be rotating & alternating?4 9680
Whether the vacuum contactor requires Short circuit protection?If No,why?731
Why Lightning arrester used? Can we use piece of iron as a core material of transformer, if No, why? In CRGOSS material what is meaning of cold rolled grain oriented? Why Impegrenation of Transformer is done? Properties of Insulator? what is phase angle? Testing of transformers (Routine & Monthly)?
can i have the methods of speed controls for 3 phase AC MOTORS.7 3773
what the purpose of protection signaling equipment in substation?2 5056
ho w to make Incident and accident reporting1 1349
how to electrically make connection to ferroli GN2N?
give me a clear defination of inductance,and how can u calculate inductance of a motor
determine two methods to find loose connection in operational electrical system?
why can the rotor of 3 phase slip ring induction motor not be a 2 phase rotor?
What is line resistance of cable & how it can be measured ?
what are the values of VRY,VYB,VBR,Vry,Vyb,Vbr,Vrn,Vyn,Vbn for Magenetic balance test of 100 KVA and 63 KVA Distribution transformer
Dear friends, i would like to know that what is the exact function of 'exciter winding' & 'aux winding' in Alternator?
Why insulation level follows this order? transformer < bus bar < circuit breaker & Isolator < transmission line.
Write down the brushes of a de machine.
number of I/O devices in siemense plc
Why 11kv to be generated in generation station
how to meas-our losses for L.T & H.T
FOR 16/20 MVA 132/33 KV ONAN/ONAF TYPE TRANSFORMER IT IS DESIGNED FOR 16 MVA WITH ONAN CONDITION.IT BECOMES 20 MVA UNDER ONAF CONDITION.LOAD LOSS IS GUARANTEED FOR 65KW AT 20 MVA AND % IMPEDANCE 13.75. PLEASE TELL US AT WHAT LOAD LOSS AND % IMPEDANCE IT SHOULD BE DESIGNED FOR 16 MVA AND WHAT WILL BE ITS EFFICIENCY AT 20 MVA?
what is meant by residual over voltage & residual earth fault ?
How can we find out LT UG cable fault (size,from-4*25mm sqr to 4*300mm sqr)? How mani types UG cable faults?