Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / baikunth
As we know DC current is uni-directional.The deflection
system attached to the megger is generally PMMC type which
eorks only with DC. Another reason is when DC current flows
in the winding of a motor or transformer the capacitance and
inductance do not act upon the current and the only leakage
current that flows through the insulation is measured.This
gives faster and accurate measurement.If we use an AC megger
the reading will be erroneous because the capacitance of
winging will allow to flow high current and breakdown of
insulation will not occur due to alternating action of
current.
| Is This Answer Correct ? | 20 Yes | 2 No |
Post New Answer View All Answers
What is touch potential and step potential?
What is the function of RCBO? What are the different sensitivity ratings & each application?
Damping resistor provided in open delta (tartiary) winding of a measuring PT at the incoming of a MV inverter drive panel is getting heated up. Can any body explain the reasons and suggest the remedy?
Write the analogous electrical elements in force current analogy for the elements of mechanical translational system.
What is measurement?
how to determine the cable size...pls explain me with the formula taking particular load....does the factors like impedance & short circuit rating influence the cable size, if so how....
why ahould you show client/engineer activities clearly on the project plan
tan delta equation test on alternators
difference between the applicability of nortons and thevenin theorem
Difference between ac parallel circuit and ac series circuit?
at meter room 50 hrc switch installed,but there are not get earthing proper,so what happen?and 11kv transformer out put going in to hrc main 400a three nog each? so earthing is require for all switch? (some customer made earthing at there home.)
why 3 phase is converted into 2 phase using electronics circuit why not 2 phases are diresctly putted from the 3 phase transformer??
how to synchronize 3 phase slip ring induction motors of different ratings.
The loads are connected with phase and ground then why current flow as the loads ?
We have received supplies of the ordered material. payments against the supplies also released. Where ST paid 4% against form C. Meanwhile it has been observed that 25% of material supplied was defective. Please suggest whether the issuance of C form from our side would be stopped till settlement of liabilities.
