what is the resistance value of earthing pit and why they
are connected?
Answer Posted / 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.
| Is This Answer Correct ? | 20 Yes | 2 No |
Post New Answer View All Answers
Electromagnetic torque developed by the motor is compared to shaft torque. A less B same C depends on motor design D more
Define resonant frequency?
In single phase capacitor motor, if the motor rotate reverse direction then how much power will be consumed by the motor and why?
how ct burden,magnetising current,ratio and knee point voltage are related & derived
How many double suspension hardware fittings are required on a double circuit transmission tower?
What is lighting kitts.
. How to calculate the Short Circuit Impedance in Transformer? How to calculate the Short Circuit Impedance in Transformer?
IF TVM OF TRANSFORMER SHOWS POWER FACTOR ON 33 KV SIDE AS 0.97 LAGGING AND ON 132 KV SIDE IS 0.75 LEADING.IS THIS CORRECT.WHERE IS PROBLEM.
How to calculate ant test the burden of Current transformer
In a 3 phase 4-wire system. For a 3.5 core cable if all loads are single phase and balanced, what will be neutral current? will it be sum of all phase currents? Or it will be zero? And if loads are unbalanced what will be neutral current?
what maximum range of star & delta in hp or kw ?
What are the effects of electrical faults?
Explain about Dubai electrical sysaem? Explain about Dubai drinking water system? Explain about Dubai Burj tallest building Electrical,Water.etc.. maintenance system?
explain wiring system
Why does increasing the magnetic flux in the main field of a d.c motor cause the armature current to reduce??