Answer / bakhtawar singh

1. earth terminal top pin is longer because when we insert
the
plug in socket then the longer earth pin firstly contact
with socket so that in case of leakage current it found low
resistance path, and hence person is safer.
2. second thing is that the earth terminal top pin is large
in diameter so that one can not insert the earth pin into
the line terminal of socket by mistake. because the earth
terminal is conected to body of machine/equipment therefore
if any body insert earth pin of top in to line terminal of
socket then line current comes into body of
machine/equipment.

Answer / sunil ulange hit nidasohi

Because Current always take low resistance path, i.e
Resistance is inversely propotional to Area,

means higher the fault current, lower the resistance,
Higher the conducting area i.e Earth terminal area is higher
than normal pins

R = ql/A, Resistance increases, area decreases

Answer / vandeep singh

earth terminal top pin is longer because when we insert the
plug in socket then the longer earth pin firstly contact
with socket so that in case of leakage current it found low
resistance path, and hence person is safer.

Answer / bhatt

As we know earth is connected to the body of
equiment/machine hence if earth terminal is longer then
earth will be connected to body of equipment/machine first
thereafter phase and neutral. It is bigger size because it
must not go in phase & neutral terminal by any mistake so
as to avoid any direct contact of body of machine with
phase/neutral.

Answer / dipak

because when we pull out the plug the contect is disconnec
is earth.

Answer / mahesh

Because Earth Fault current is high & passed through
eatrhing.

What is diference between ELCB & ELMCB?Also how its application for use in design area?

2 Answers  

How to calculate energy stored in an inductance?

0 Answers  

i m electrical diploma holder i want to do plc $ Scada some body tell me which insitute is best for me near chandigarh

0 Answers  

what is the use of conservator in a transformer?

6 Answers   L&T, TATA, Tata Motors,

why the arc welding machines require parallel earthing systems? ie why each machines are connected to earth pit by separate wires during earthing? wats it adavantages?

0 Answers  

What do you mean by passive circuit elements and why these are called passive?

0 Answers  

If the t/f capacity is 500KvA then what is Amps ratting of the main breaker.

5 Answers  

IT IS SAID THAT THE OLTC OPERATION SHOULD NOT BE PERFORMED WHEN THE TRANSFORMER IS GENERATION TRANSFOREMR/STEP UP MODE. WHY IS IT SO?

1 Answers   MSETCL Maharashtra State Electricity Transmission Co Ltd,

What is the difference between CRNO and CRGO in an transformer and what is the advantages of these two.

13 Answers   Anchor, CIL, ETA, Kirloskar,

Why do we generate 3 Phase AC Supply? It is possible to generate 4 Phase and 5 Phase explain it?

4 Answers  

why a bulb glow when connected with two end phase and neutral respectively.

1 Answers   ACME,

What are the characteristics of negative feedback?

0 Answers