Answer / pradeep kumar dhar

The resistance value varies according to the nature of the
soil.It is very high for rocky soils.A value of 1 ohm or
less is considered to be very good.Several pits are
interconnected to reduce the value of earth resistance.

Answer / shri..

It should be bellow one ohm

Answer / vikram

The resistance value depanded to the nature of the
soil.The resistance value is very high for Hill area. when
resistance value of lessthan 1 ohm this value is very good.

Answer / parmod kumar

The resistance value of Earth Pit should below 1 Ohm &
Earth pit are connected to reduce the earth resistance
value.

Answer / ajoy kumar

In some cases like rocky soil, the resistance value of individual earthpit become more than 5 ohms. For these cases, we can consider the combined earthing and it should be atleast less than 1 ohm.

Answer / &

the earth resistance
more than 1. and any
switch yard
maintain...earth
resistance below 3
meter, with the mat
giiii

sometime battery charged and then automatically charged when rectifier ON conition, is there any chances please clarify the same.

0 Answers  

why transformer rating is expressed in kva.

4 Answers   Electrosteel, L&T,

Is a current transformer step up or step down ?

2 Answers  

Is it possible Z axis excess error alarm reflect in X axis if yes explain ?

0 Answers  

What is the difference between earthing,ground&nutral?

2 Answers   Bhel,

Brushless excitation of synchronous generators and motors

2 Answers   AMIE,

Normally the starter used to reduce the starting current.but the dol starter do not it,so why we use it?

4 Answers  

What is the "IS" for Rising Main?

1 Answers   APTransco, NTPC,

Why Trasformers rated in KVA

13 Answers   College School Exams Tests, HAL, Oil and Gas Jobs,

what is the meaning of the symbol << >> put in transformer drawing

0 Answers   TATA,

what is meant by ceiling voltage, ceiling current?? pl reply asap

4 Answers  

What types of motors are used in cranes

9 Answers   BPDB, BUBT, CNH,