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For load of 1 nos 3 TR Air Conditioners,6nos of 60 Watt Tibe Lights, 2 nos 200 W Outdoor Lights,1 no Coffee maker.All may work at the same timehow do I select DG Set Rating ,pLease advise the calculations
1 4507Is there any local or International standards that prohibit the installation of earthing pit in the planters area where the earthing pit is subject to continues soak in water?
1 3516Is it acceptable of installing an earth pit in planters area where bare copper cable, earth rod and connection are susceptible to corrosion due to water?
1905what is meaning of sympathetic tripping with respect to relays and give the values for current carrying capacities for copper and aluminium cables from 16sq mm to 500sq mm
1 5024what are the values to be accepted on 3 core 185sq mm for 11000volts on insulation resistance between conductors and between conductors and earthed?
3 5267Post New Electrical Engineering Questions
which fault is severe and why?between lll fault and lllg fault which fault is severe and y?
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%
which phase is preferred for connecting 1 phase vt used for synchronizing OHL? WHY?
from which formula we select a capacitor rating?
Operation of isolators.
How eddy current generation support the idea of train braking?
1. for eg, capacitor is used for many purposes(it act as filter, oscillator, bypass capacitor, memory storage etc...) 2. Please tell me some example circuits for different uses of capacitor( whenever and whereever and however we used capacitor as a filter, oscillator tuning etc..) 3. similarly for inductor and resistors(it act as what?) and when and how we want to act as like that?, and how we can used these components depends upon our requirments with example circuits and explanation? design to act as these components depends
why single phase to grd test in HV cable?why not 2 phase at a time?
If one tertiary phase i.e. R,Y or B is earthed of a loaded type tertiary delta connected (Without load)of a power auto transformer, what is its advantage/disadvantage?
What is the name of the winding from which the supply is taken for load connections?
why does the magnetic balance tests at transformer?
Brushes are placed at magnetically neutral axis,when brushes reach that point,the armature conductor gets shorted,but it can be seen that the dc supply is also shorted,wont that get damage? help me plz
Alternator rotor earth fault relay circuit
what is mean by descripiency relay? & wht is its ansi code?
1. What is differential relay? How it operates? 2.How to calculate the Short Circuit Impedance in Transformer? 3.What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works? 4. While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply? 5. What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer? 6. Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example? 7. Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient? 8. What should be the minimum and maximum ohmic value for earthing? 9. Why DC Currents are not used in transformer? 10. What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?
