Interested to Buy Any Domain ? << Click Here >> for more details...
what is earthing?
- 1 Answers
- 4536 Views
- Marksans Pharma, I also Faced
- E-Mail Answers
Answer / manjot
Earthing is a safety device used to prevent a shock due to
leakages arising from weak insulation, breaking of the
element or otherwise. The metal bodies of appliances handled
like the electric iron, kettle or refrigerator must be
earthed, that is, connected to a pipe leading deep into the
earth on to a metal plate. In case the metal body becomes
live, the circuit is completed through the live wire and the
earth, resulting in a high current. The fuse on the
live-wire side should blow out immediately, and the matter
should be investigated and the fault rectified. In case the
fuse does not blow out, and a person touches it, a severe
shock is still prevented. This is because most of the
current flows directly to the earth via the earth connection
which has negligible resistance. An extremely small current,
if at all, may pass through the person’s body which offers a
resistance, resulting in only a mild shock.
For an earth connection, a three-pin socket and plug are
required. Due to the high current it draws, the earth pin is
made thicker and larger than the other two pins. This
ensures that the plug fits firmly into the socket, reducing
the chances of sparking. The heat caused by sparking causes
the terminals to wear off and damages the socket and the
plug. Because it is larger, the earth connection is made
first acting as a safety device.
| Is This Answer Correct ? | 4 Yes | 0 No |
The use of vermilion on rubric of the Tartar Relation is confirmed by the presence of three lines attributed to HgS. Why should this diatomic have more than one vibrational line?
What can be the supporter of combustion except oxygen.
WHAT IS THE SYLLABUS OO GROUP -I?
what is earthing?
How do you measure order of reaction?
Normally entropy is expressed as q/T. But, work and heat have same unit. Why can't it be replaced by work?
how many types of stability in pharma or API industry ?
How the value of Absorbance and molar extinction coefficient are caluculated?
if water is mixed with mercury what causes with thier suspension property is it increses,decrease or average?
I want to ask the inventions of the maxwell boltzmann theory of gases?
The rate constant for the second order reaction is 0.54/M.s at 300oC. How long (in sec) would it take for the concentration of NO2 to decrease from 0.62M to 0.28 M? 2NO2(g) 2 NO(g) + O2(g)
who is minister of railoway
Organic Chemistry 
