What is value of earth resistance required for substation and equipment earthing and what are the reference guidelines

1745

What are capacitive,resistive,inductive surge absorbation? What is ferranti surge absorber? What is lagrangian cost? What is Px operator?

1969

why we use four type of phase angle difference between pimary & secondry winding of a transformer & where we use them?

2044

what is the voltage between earth to neutral in lift.

1771

how to interlock 3 incomer-ACB,1 buscoupler ACB,... pls answer this question and if possible send me the ckt diagram..haifriends2910@gmail.com

2857

what is sustainable current of any conductors . a bare busbar or pvc cable has different sustainable current .

1739

what is the calculation involved to design the heater to heat 10KL of water in temperature control unit?

1883

can i able to get bhel previous exam question paper?

2063

How can find thermal state value in relay for calculate thermal overload.

1868

How to set the relay,,??

2065

If a air condition consume 2.50 to 3.00 amp then how much it will consume in watts if it is running 10 hours out of 24 hours????

1824

We have received supplies of the ordered material. payments against the supplies also released. Where ST paid 4% against form C. Meanwhile it has been observed that 25% of material supplied was defective. Please suggest whether the issuance of C form from our side would be stopped till settlement of liabilities.

1926

how to calculate the magnetizing current of ct ( 800A/1A) for Relay 64

1430

Why saturation region slowly shifted in the left side?

1820

How to measure size of cable on a given load

1788