What_is_mean_by_negative_dc_voltage? why we use -48v except +48v in DC power supply systems.2 4889
In power transformer YnD0 Vector Group is possible or not? if possible, what will be the vector diagram and what are the conditions?2 6335
What is class 2 coordination ?2 2248
what is difference between mccb,mcb,elcb,pccb7 17540
what is the significance of tan delta testing?explain the theory?7 32705
how to test generator protection rotor earth fault relay and locked rotor test?1 12965
hoe to test voltage restrained overcurrent relay?2 3945
What is the Difference Between MCCB & ACB & VCB3 7496
Pls say , how we calculate lux / sq.ft, which formula used for calculation5 15492
I am inpecting a 10kVA UPS what tests should i do and should i observe?
what is the voltage regulation for unity and zero power factor?
sir i completed apprentice in TNEB.apprentice is eligible for 'c' licence
What Should be the value of Vector Surge angle at Tripping and how to calculate it?
What is float cum boost charging system?
define displacement & magnitude ?
redundant connection in contactor?
When we use 3 terminal resistor?
How many types of instrument cables are there?
The series field winding has low resistance while the shunt field winding has high resistance. Why?
what is the necessary of using inductance property in transmission lines even through resistance is used to opposes the high current flows in that?????
What is touch potential and step potential?
what about the power of wattmeter at starting and loding?
1.what is difference in maintain Hz again Hz in USA ? 2.how to calculate the battery AH? 3.why are yearly maintained in transformer how many tests in required?
WHAT ARE THE DATAS REQUIRED FOR PROTECTION AND METERING AND CONTROL AND LOGIC PREPARATION,HOW TO STUDY THE PROTECTION AND METERING?