What_is_mean_by_negative_dc_voltage? why we use -48v except +48v in DC power s

What_is_mean_by_negative_dc_voltage? why we use -48v except
+48v in DC power supply systems.

Question Posted / rashid

2 Answers
5866 Views
APEL, BSES, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

What_is_mean_by_negative_dc_voltage? why we use -48v except +48v in DC power supply systems...

Answer / er. ankush miglani 9718151073

IF WE CONNECT THE +VE POLARITY TO THE EARTH AND -VE TO THE
EQUIPMENT THE VOLTGE IS CALLED -VE DC VOLTAGE.
THE POSITIVE POLARITY ACQUIERS THE CORROSION VERY QUICKLY
AND TO MAINTAIN THE VOTAGE OF THE DEVICE UNDER
SPECIFICATIONS IT IS DONE.

Is This Answer Correct ?

10 Yes

1 No

What_is_mean_by_negative_dc_voltage? why we use -48v except +48v in DC power supply systems...

Answer / sadat khan

we use -48voltd.c instead 0f +48voltd.c because all
problems like fluctuvation,surges all occur in possitive
wire not in negative wire.

Is This Answer Correct ?

1 Yes

2 No

Post New Answer

More Electrical Engineering Interview Questions

how can i determine the KVA/MVA rating of transformer precisely?? is there any standard test?????

0 Answers

Why the CT Secondary is rated as 5A generally?

2 Answers

What do you understand by avr?

0 Answers

gas turbine genrator reactances

0 Answers

Electrical Engineering

0 Answers Gamesa, Medha Servo,

How to measure the capacity/rating of a distribution transformer in KVA?

0 Answers

what are the condition that makes hooter blow?

0 Answers

how could we know the size of cable by physical view?

0 Answers Havells, United Engineering,

Anybody now how to claculate the Bescom power consumption?

1 Answers

What happen if an alternator rotates in reverse direction?

3 Answers

Why is the electric shock from the DC supply is more dangerous than the shock from AC supply.

8 Answers IBM,

what is the reqirred voltage in HT motor to get full RPM on no load test?

0 Answers

For more Electrical Engineering Interview Questions Click Here