Charge and discharge characteristics of nickel cadmium cell, Physics

Charge and discharge characteristics of nickel cadmium cell:

During charging and discharging the electrolyte acts only as an ionised conductor, transporting electrons from one plate to the other, its specific gravity remaining constant.

On discharge the terminal voltage initially falls rapidly and then remains constant for most of the discharge cycle, dropping rapidly again

when the battery is nearly fully discharged. When charged, the terminal voltage initially rises rapidly and then settles to a gradual increase. A second rapid rise takes place as the battery reaches the fully charged condition, at this time gassing takes place, hydrogen being released at the negative plates, oxygen at the positive plates, this combination of gases is explosive. Prolonged gassing should be avoided as it reduces the water content of the electrolyte and causes overheating of the battery, a slight amount of gassing, however, is necessary to ensure charging is complete.

The terminal voltage remains constant for most of the batteries life and the specific gravity of the electrolyte remains unchanged, the only way of determining the state of charge of the battery therefore, is to carry out a full charge followed by a capacity test.

During discharge the plates absorb electrolyte to such an extent that the level may disappear from view. As the battery is charged, the electrolyte is forced back out of the plates, a point to note when topping up the cells.

Posted Date: 9/13/2012 2:13:06 AM | Location : United States







Related Discussions:- Charge and discharge characteristics of nickel cadmium cell, Assignment Help, Ask Question on Charge and discharge characteristics of nickel cadmium cell, Get Answer, Expert's Help, Charge and discharge characteristics of nickel cadmium cell Discussions

Write discussion on Charge and discharge characteristics of nickel cadmium cell
Your posts are moderated
Related Questions
what is main requirements for any thin film process

A parallel plate capacitor has plates of area 200 cm 2 and separation among the plates 1.00 mm. What potential difference will be manufactured if the charge of 1 nC is given to th

Are fiber optics systems difficult to install? This becomes significant to establish a fair comparison with other components, in this case normal light fixtures. Fiber optics s

Q. When there is no feedback, the gain of the amplifier is 100. If 5% of the output voltage is fed back into the input through a negative network, find the voltage gain after feedb

A simple tripod A useful tripod can be made by cutting away the sides of a tin can. It is suitable to make two or three of these to suit dissimilar burners and for use as stand

It's working is based on the detail that if a beam of electron is subjected to the crossed electric field   and magnetic field , it experiences a force because of each field. In ca



An α particle is a positively charged particle. Rutherford observed the behaviour of these particles when they approach the interior of the atoms as shown in fig.  Rutherford ob

Fusion Reaction: In nuclear fusion light nuclei are brought together to form a relation heavier nucleus. They energy free in nuclear fusion is larger than that free in fission.