3phase 4 wire system is more reliable or 3 phase 3 wire systems?
Answer Posted / sharaf
yes...an extra earth wire in 3 phse 4 wire systm protects
equipments frm earthing
Is This Answer Correct ? | 2 Yes | 1 No |
Post New Answer View All Answers
my UPS suddenly goes off and all panel light also blow off.This happens even main electric supply is not interrupted.After some time it automatically starts functioning normally.Batteries are new.
What are marginally stable systems?
Can Anyone Answer anyone of these ? Q1) why direct SOLUTION of Load Flow Studies in Not Possile ? Q2)Why majority of Buses in power system are load buses Q3)Why one of the buses in Power system is taken as reference bus (slack or swing) Bus ? Q4)Bus Admittance Matrix is a sparce (means it contains some zero elements ) matrix , give reason
What is the armature mmf in a D.C machine?
What is the difference between diesel generator engine with and without turbo charger with the same capacity?
why occ characteristics of generator is also called as magnatization characteristics ?
What is the power factor of an alternator at no load?
Define corner frequency?
Ratings of power transformer,Distribution transformer.
Why hydropower stations are preferred solution for meeting peak loads in grids?
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 meant by class 1 E in electrical power supply?
WHY DO VOLTAGE TRANSFORMERS FAIL DURING EARTH FAULT IN THE DELTA CONNECTED 6.6KV ELECTRICAL SYSTEM
3- What is the target from Zero Impedance, Single Phase Imp., S/C Imp. and magnetic balance tests?
what is the difference between an alternator and a synchronous motor