WHY THE +VE POLARITY OF 48V DC POWER SUPPLY IS USUALLY
GROUNDED?
Answer / neeraj singh
Sorry, but this:
"negative because - it reduces the chances of Noise ,, as
noise tends to add more towards +ve signal "
is garbage. Electrical noise picked up on a conductor is not
affected by the potential of the conductor.
This too is drivel: "as in higher DC voltages , one may
stick to the conductor ( In higher AC however you may be
thrown off )"
It's an old wives tale, nothing more. When subjected to a
shock, your muscles contract. In an Ac shock, they do not
contract and expand at the line frequency (50/60Hz).
Generally if you get a belt to the hand, your arm folds at
the elbow and your fingers close. That may throw you off, or
it may close your grip... ac or dc makes no difference.
| Is This Answer Correct ? | 3 Yes | 1 No |
what happend to DC shunt motor if its field winding insulation becomes slightly weak? will that motor can run on full load or not explain in detail. thanks
What is the principle of residual protection?
what is the power factor of the megnetising component of transformer
What is the difference between diesel generator engine with and without turbo charger with the same capacity?
thyristor controlled APFC panel design parameter?
What is the function of restraining coil in differential relay? as well as restraining current?
what are the advantages of Horizontal isolation breakers v/s vertical isolation breakers in medium voltage switchgear class.
CONTACTORS ARE MADE UP OF WHICH MATERIAL?
Why transformer rating in KVA? and Generator also?
6 Answers Bhel, IEEE, Toyo Denki, Toyo Engineering,
what is compatible kva for 3300 watts and why
What is the function of an exciter in a generator?
Is a current transformer step up or step down ?
Civil Engineering (5086)
Mechanical Engineering (4453)
Electrical Engineering (16638)
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)