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Why dont we get shock while testing for voltage with a line tester? How the bulb inside the tester glows while testing with tester coz we are totaly isolated from earth or we are not giving close path for the current to flow?
3 16788What is the operational principle of direct current current transformer and direct current potential transformer?if possible plz reply with ckt. diagram.
1 4685i am BSEE student, my project study is to synchronize the generator of an hospital, it have a one 313KVA standby-power diesel gen.,and three 100kva transformer.The generator system is operated manually and no ATS or UPS. one more new building is being build so the transformer will be upgrade to a higher vale. 1)how i can connect the new gen. to the old gen. and to the synchronize panel? 2)what is the new gen. to be buy?(rating, etc.) These is my title: To synchronize the generator system of the ____ Hospital. Anyone have a good title? Thanks.
1 3757in a dc motor we supply current only to the armature conductors,from where is the field winding gets excited then??
3 6145please send me previous year questions of jspl through which i could prepare myself for the test.
1890Is there any option to replace two Genset of capacity 125KVA with one higher capacity for same office?
8 93981)which height building required lightning arrester? 2)how to calculate the requirement of lightning arrester? 3)what is the pro instrument? 5)how to test protective relay like overload?earth fault relay?
1 16910How can you calculate in detail the VA burden of current transformer used for Restricted earth fault protection? Please understand that the CT required here is Class PX or X. Also please show the calculations for knee point vtg, stabilizing resistor, magnetising current.
3 16886what is the significance of terminal voltage and phase sequence in the operation of paralleling of two generators?
2562Post New Electrical Engineering Questions
100 MVA 3-phase alternator with earthed neutral has a reactance of 5 ohms per phase. what will be the fault MVA of generator.
A Question Like A Wire Is Wound Whose Resistance Is Some 132. 44647 Ohms. If A Voltage Of 30 mv, 296 Ma Current Is Applied To It What Is The Resistance.
Explain in brief description about the operation of DG sets.
Efficient electrical earthing in hard rock area
What are the no-load losses for the 11000/415V transformer with the following rated capacity? 1.1500 kVA 2. 2000 kVA 3. 2500 kVA 4. 3000 kVA
what is the usage of microcontroller in the panel board?
What is vacuum circuit breaker.define with cause and where be use it device?
Why frequency changes due to load variation in power system ? i.e why when load increases frequency decreases?
How to calculate impedance volt in Transformer?
How do we calculate over and under frequency tolerance from generator data?
for hipot test on 33kV busbar, we will test on 70 kV or 56kV, what is the acceptable leackage current?
The loads are connected with phase and ground then why current flow as the loads ?
What is Icu and Ics and what is difference b/w them. please tell me how to calculate a size of a copper bar for a system or a breaker... reply on... king.arish@gmail.com would be waiting for a logical answer.
area control error
IN electrical field, WHAT ALL THINGS THE CUSTOMER WILL ASK WHILE ORDERING FOR LT PANEL (ALL TYPES OF LOW TENSION PANEL)
