in 11kv/400v transformer when only one phase of 11kv supply
fails what happens to sec voltage and why
Answer Posted / k.prakashchandra
If delta/star ,one phase voltage will be normal and the
other two 50%, If star/star two phases normal and the third
missing
| Is This Answer Correct ? | 5 Yes | 4 No |
Post New Answer View All Answers
what is acceptable leakage current for 33kv cable while doing high voltage test for cable? how to calaulate the leakage current for 33kv or any rated cable?
what is distribution board?
What is a DC series motor?
how to calculate the step resistance for slipring induction motor,how you deside the no of step for that?
What is the effect of positive feedback on stability of the system?
1. If 8.35%Z means the percentage impedance of 132kV-line from power company, we will like to confirm its base capacity?
how the phase convertor changes the no. of phases
An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The slip when motor stalls is A 1 B 0 C 13.33% D 10.33%
What is DTR erection?
why various test are performed on electrical panels & power cables before commissioning on site & what are these test???
What is the theoretical reason for the size of a zig zag grounding transformer to be 1.732 times less than that of a wye-delta grounding transformer used for the same application?
Which type of a.c motor is used in the fan (ceiling fan, exhaust fan, pedestal fan, bracket fan etc) which are find in the houses ?
HOW CAN WE DECIDE THE SUPPLY VOLTAGE FOR MOTOR ACCORDING TO ITS RATING(IF ANYONE KNOWS GIVE IT WITH EXAMPLE AND ITS CALCULATIONS)
how can we say that stator magnetic field rotates with synchronous speed?can we derive?
What are the different circuits in thermal power plant?