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In Railway,why we are used HT Line 25KV ?.why we are not used 11KV,33KV and others for This?
37 46546why dont we connect the two 12 V DC batteries in parallel, for an inverter (UPS)? is there any harm ?
6 9373will we have to design the UPS differently for both i.e. if we want to connect the two batteries in parallel and/or we want to connect the two batteries in series ?
4 7001in a 740 kw dc seperately excited motor field voltage is constant about 17.4 volts and armature voltage is500 volts dc. how it is possible to have two different voltages from single transformer of output voltage 500 volts? if any difficulty in question contact ajitsingh.kadian@gmail.com
1 4475IS there any mechanical connection between the field winding and armature winding of a dc generator?
IOCL,
11 16612Post New Electrical Engineering Questions
Pls explan the OLR setting in VCB at HT yard
who can measure the size of power cable?
Explain what are inter-poles and why they are required in a dc machine.
what are all types of cross section in AC cables?
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?
I Have 3 Phase 10 KW AC Alternator i found one phase weak, so what will be the reason & what action shouls i take to rectify the same.
What is the difference between line drop and percentage line drop?
how many current required for hypo test
how can we say that stator magnetic field rotates with synchronous speed?can we derive?
What Should be the value of Vector Surge angle at Tripping and how to calculate it?
write encoder 17 pins details? pin a;b+, pin b;w+,..pin s & t. what is the meaning of b+, w+? explain;
I have a reading off 1.5ohms at my mem my main c/b is rated at 40/6 amps in a domestic house and i was told to change it to a b curve c/b is this ok
Explain cmrr?
send me all basic electrical question and answers
What is the difference between Droop vs Isoch Control?
