Interested to Buy Any Domain ? << Click Here >> for more details...
Q- In the process of checking AC through Phase Tester our
body is the part of circuit but we don't recevie Shock, Why ?
- 2 Answers
- 5543 Views
- I also Faced
- E-Mail Answers
Answer Posted / kunal singh dabi
A mains tester works because the potential difference
between the live and Earth makes a very small
(imperceptible) current flow through the tester and our
body to Earth. This current is just enough to light the
lamp / Neon. When you stick it in the Neutral socket, the
potential difference (just a volt or two, usually) is not
enough to give sufficient current to light the neon.When
the tester light glows, it mean electrons flow like,from
live terminal > tester > body > floor & walls of building >
inside the earth>goes back to the generator, via earth or
neutral conductor (Please note that somewhere, Neutral and
Earth are connected together so we have, in effect, a huge
loop of circuit.)
Above description is for AC supply only ( path complete
thorough earth or nutral to generator neutral), however
please note the fhilosophy is not applicable for DC supply
where - V is in floting condition (not grounded or earthed)
so due to un completation of that circuit tester light will
not glow.
| Is This Answer Correct ? | 6 Yes | 1 No |
Post New Answer View All Answers
why orfice is not used for main steam flow calculation
define feed forward control loop with example and drawing?
what would be the minimum flow rate that we can measure on rotameter..?
What is cut off relay? And why use in PLC and DCS?
what different types of problems do occur while doing instrumentation commisioning and how to solve them? please explain in detail
What is the diffrence between digital signal processing and discrete signal processing?
(1) In turbine, what does term CDP, NI, NH, HSSOC, means. (2) What is the purpose of LO overhead tank in turbines.(3) An equipment is certified for EEX, IA, IIC,T6, what do you under stand by this.(4) what is SURGE, and how it is prevented, what is the purpose of bypass valve across AS valve.(5) Give 2 application of quartz crystal used for process parameter measurement.(6) what is meant by cold float of compressor shaft. (7) state four different types of flow measurement. For gas flow measurement mmscfd is the common unit. Expand the unit and specify significance of word S in the unit.(8) what is meant by Gap voltage, in vibration measurement. Normally how much Gap voltage is set and state the reason.(9) what will the new flow factor if D/P transmitter is Re-Ranged from 25” wc to 50” wc.(10) what is the usage of QDV & Volume booster.
which type of zones used for boiler? & why ?
Explain signal isolator
How to convert mmWc(mili meter water colam) to tph(ton per hour)?
What is 3 element control system
pls suggest suitable MOC of diaphragm for pressure measurement of UREA grade solution service fluid.
Isometric drawings are generated during _________________ phase of a project
Hook up resistance decade box to temp.transmitter.
principle of dead weight tester ?
