Answer / rk

As mentioned earth and ground are the same terms used in
different countries. The earth (ground) conductor is
electrically connected to the earth so that anything it is
connected to, cannot become live. There will be be some kind
of local regulation determining the maximum resistance that
is allowed where the connection is made to ground (rod, mat etc)

The neutral is one connection of the supply transformer that
is also connected to earth. It is not a return path as such
because ac is changing direction. The reason it is connected
to earth is for safety. It means that a fault (to earth) of
the live conductor will cause the overcurrent device (fuse
or breaker) to operate and trip the power.

There are systems that do not connect one side of the supply
transformer to earth (no neutral). They still function just
the same as an earthed system. This is more common in
military or medical and requires some form of sensing
circuit to detect faults but the fault gives an alarm rather
than a trip so that power remains until an outage can be
planned to find the fault.

Answer / gopi

GROUND AND EARTH ARE EQUIVALENT BUT EQUAL,
GROUND-FLUCTUATION OF LOAD IN OUTSIDE,THE IMBALANCE CURRENT
IS FLOWING ,THIS IMBALANCE CURRENT NUTRALISE BY GROUND.
EARTH- IT NUTRALISE THE EXCESS AMOUNT OF CURRENT WHEN
APPLIANCE BECOME SHORT CKT.

Answer / k.prakashchandra

Earth means always earth , ground may be earth or large conducting body as in vehicles,ships ..

what happens when series resonance occurs?

0 Answers  

---

Can we parallel lise the secondary side of the two similiar transformers with same voltage ration, imp, but with different vector groups.. ( for ex. 11 KV / 6.6KV two trfs but different vector groups can we parallelise both of them ,, what happens if we parallelise them

1 Answers  

---

what is the write prosidure of stringing of 8meter pcc pole.

0 Answers  

---

Briefing the effects of ASR and ACR of a double closed-loop speed regulating system.

0 Answers  

---

what is difference between isolation and ultra isolation transformer?, what is the method of testing ?

0 Answers  

---

---

In a synchronous motor. if start is running at high speed.  What will be the starting torque : Higher Lower Zero

0 Answers  

---

State the methods of improving power factor?

0 Answers  

---

what is size of 3phase 4wire cable to be used for 11 ton ductable A.C and how to calculate cable size for different load

0 Answers   Tata Power,

---

purpose of flux relay for turbo generator in power plant

1 Answers  

---

How can i run three phase bore well motor in 2 phase while i running it by using capacitor its ams increase to 23 ams the distance from motor to stater is 1600 feet

0 Answers   Private,

---

As we use capacitor bank in 3ph ckt to improve PF, can we use capacitor in single ph domestric use, in house we have Fan,Mixer,electric cooker,iron,tube choke they also lag the system,because it is inductive load. if it is possible to improve PF of single ph system-- if yes- type of capacitor to be used,connection diagram, working in detail. if no-- list it.

0 Answers  

---

in traction which type of supply are used

15 Answers   APGenco, Construction,

---