Answer Posted / naresh
Because power factor of the load is unknown that's why transformer measure in kva
| Is This Answer Correct ? | 1 Yes | 1 No |
Post New Answer View All Answers
hi frnz,can somebody give me any project work? i am a 2nd year student & interested in practical works...plz give me some projects
is it possible to start a motor in felid connected to a remote mcc
Determine a suitable number of slors and conductors per slot for the starter 1 winding of a 3 phase, 3300 V. SO Hz 300 rpm alternator. The diameter is 2.3 m
What is reactance, reluctance,capistance, pls give answeer in hinglish and be simply Jo asani we smajh m aa jaye
What is the reason for using a GE G101 MCB in place of an EP102 MCB if both are capable of AC circuit protection?
What is the difference between isolators and electrical circuit breakers?
Define pole pitch?
What is the basis for selecting Vk/2 or Vk/4 for REF and Differential protection of Transformer and What is the significance of magnetising current
What will happen if the armature resistance is in minimum position and the field resistance is in maximum position while starting the motor
Dear all, I just want to ask an expert on this forum for some insights. For the magnetic balance test, when applied voltage on a Delta-Star transformer e.g. Dyn11, the following relationships apply for HV side: 1. H1-H2 = H2-H3 H3-H1 2. H2-H3 = H3-H1 H1-H2 3. H3-H1 = H1-H2 H2-H3 For the LV side also: 4. X1-X0 = X2-X0 X3-X0 5. X2-X0 = X3-X0 X1-X0 6. X3-X0 = X1-X0 X2-X0 Is there a similar pattern for Y-d, Y-Y, D-d? And how about Y-z, D-z, Z-y transformers? I've tested a YNzn5 transformer and for LV side I don't see the pattern. In this particular case I got for LV side the following (see values below): H1-H0 H2-H0 H3-H0 X0-X1 X0-X2 X0-X3 128.0 119.9 7.2 29.2 13.3 15.8 70.7 128.4 59.2 23.4 22.0 3.6 7.2 120.1 128.1 13.4 29.3 15.8 What is the relationship here for LV? For row 1 I see the relationship, for row 3 I also see but it's shifted, but for row 2 I don't see such relationship. Any suggestions, answers, someone?
What is the difference between shortcircuit current, rated current of cable & MCB with example? What will be the size of cable required for 5.5 KW motor (Full load current 10 Amps approx.), Starting current with DOL is 120 Amps. Aprrox. Short circuit current with LLLG fault is 2000 Amps Approx.
Electrical Engineering
how to carry out Magnetizing Current Test on Distribution transformer and what purpose we are doing this test. why transformer rating in always in KVA ? what ispositive, negative, zero sequence impedence? How ElCB tripping if Neutral touch with ground Why AC & DC capacitor are use in UPS ? why motor rating in KW? how to syncronize two dg sets
which types of relay used in acb and vcb?
what is relation between ct and pt ratio with multiplication factor of a energy meter? is there any other factor on which multification factor depend?
