adspace
What is the Polarisation index value ? (pi value)and
simple definition of polarisation index ?
Answer Posted / thota lokesh
Its ratio between insulation resistance(IR)i.e megger value
for 10min to insulation resistance for 1 min
it ranges from 5-7 for new motors & normally for motor to be
in good condition it should be >2.5 in case of PI value <2.5
over hauling should be conducted for motors and winding
should be thoroughly checked
| Is This Answer Correct ? | 35 Yes | 19 No |
Post New Answer View All Answers
In PFI plant one stage capacitor connection is directly connected(with out megnetic contact controll). but why?
Dear all i want to know SEWA Electrical Supervisor Licence test Previous Year Questions ? If any body know please send to me zohairaukllah@yahoo.com
Enlist four components of electrive drives.
sir please send me previous year questions of jspl of electrical section through which i could prepare myself fpr the test.
please send me last 5 year interview questions
Define the overload capacity of the motor?
hi can anyone pls tell me the eee interview core questions asked in l&t
Please nybody say, weather the result of Bharat Oman is declared or not? Probable date of declare???????
Draw the circuit of clapp oscillator?
I am going to appear RRB Sr. Section Engineer Exam, Electrical. Can you send me previous year questions of RRB Electrical engineer. specially Section Engineer questions. my email id is likerahulworld@gmail.com
please send the IS strandard for electrical to sakthi_murugan86@yahoo.co.in
Draw the line diagram of diffretial relay connected to transformer?
send me any model test paper of clerical post of state bank of india.......
please send the last 5 years {{{JUNIOR ENGINEER - ELECTICAL, ELECTRONICS RRB CHENNAI and secundrabad}}} TECHNICAL question papers TO MY EMAIL ID dinesh100701@gmail.com
hai 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