why earth hole size is biggest in plug point?
Answers were Sorted based on User's Feedback
Answer / vikas jauhari
I am fully agree with Mr. RD Dadhich....
This is well explained in BS1363...
so don't forget there is no connection with cross sectional
area for low resistive path
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / rajesh.v
1.it will
provide high
conductivity...
2.it is very
useful for
identify the
sequence
terminal as
earth, phase,
neutral...
3.the earth
point are give
most support to
hold with
socket...
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / neha
as we know that the area of cross section is inversely proportional to the area or R=rho(l/a)....so to decrease the resistance there is a large hole of earth in plug point as it is connected to zero potential (earth) for safety purpose
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / n.d.mahesh
usually all the metal body equipments have the earth for
example washing machine, refrigerator ,oven.we cannot see
the earth pin in the t.v,this is for the protection that is
the metals are good conduactors and when human intend to
touch then it causes shock,if there is any leakage in the
circuit.so to prevent this we are using the earth.
| Is This Answer Correct ? | 2 Yes | 3 No |
Answer / rajesh mishra
as we know R is pro to row*L/a...if "a" is larger then r is
small..so the resist is small and it easily pass the s.c
current through it......thts why the earth hole size is
biggest in plug pt.
| Is This Answer Correct ? | 1 Yes | 2 No |
R = row L/A.......(1)
r is increase so the a is decrease so the depend to this
equation 1
| Is This Answer Correct ? | 0 Yes | 2 No |
Earth is a big conductor if we are talking about the
conductivity so the theory is the bigger the size the
smaller the resistance so the earth itself serve as a
conducting path of the resistance to secure the lives and
safety of the properties if in case there is incidental and
transient fault of the power systems.
| Is This Answer Correct ? | 0 Yes | 2 No |
HRC full from
how the ac voltage are selected like 220v,415v,750v,1000v& 1.KV,6.6KV,11KV,33KV,66KV,132KV,220KV & why these are selected like these orders
What will happen if we give 220v supply on both sides to the bulb
7 Answers Exide, Sumeet Industries, Toshiba,
an off load but energized 11/0.4 KV, 1250 KVA T/F has a power factor of 0.65(capacitive)..!! why is it so, though T/F being an inductive device ??
What is gain margin?
what is an S.C.R. and how do they work?
in 220 kv substation,what is the mean of avr voltage reading? means at oltc temp. 36 the avr voltage was 109v.so what the mean of 109v
While starting a high capacity motor, it takes 6 times the full load current. Why it doesn't trip relay or CB's in that network?
how caculate the pump head to maintain perticuler pressure of water and what would be the motor size in hp for the same?
When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<
Advantage of earthing transformer
what is suitable alternative for an igbt?
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)