what is the name of the oil is used in transformer?
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Name the types of motors used in vacuum cleaners, phonographic appliances, vending machines,refrigerators, rolling mills, lathes, power factor improvement and cranes.
iam preparing for rrb section engineer post in electrical branch.suggest the right textbook for my reference.fromwhere i will get the previous q.papers?
how ct burden,magnetising current,ratio and knee point voltage are related & derived
HOW WE KNOW IN PHYSICALLY THE CONTACT SURFACE OF A VACUUM INTERRUPTER IS GOOD OR GOING TO DAMAGE IN A VCB AFTER ABOVE 500 TIMES OPERATED.
difference between semiconductor & conductor & insulator?
Why an ac systems are preferred over dc systems?
When we use 3 terminal resistor?
Why colled 440V to 3-phase supply.
difference between a diode and thyristor?
In a tap changing transformer where is the tap connected, is it connected in the primary side or secondary side?
What is the test block protection relay if any body know plz explained
What happen to the transformer if the OLTC frequently used for lower and raise occured 50times daily?
What are the material used for resistor?
which protection function should measure RMS value of current&DFT value of current?
how could we calculate the no of outgoings from a 800 watt distribution board