PHEP 24 Flashcards
Control bus batteries are used to supply electrical power to:
A: operate oil circuit breakers
B: Emergency pumps
C: Emergency lighting system
D: all of the above?
D
What are the most important functions performed by batteries?
- Portable source of power.
- Source of emergency power.
- Stored energy source
- Pure source of DC.
What is the basic unit of a battery?
The cell
When a higher voltage is needed that one battery can provide, additional batteries can be connected in?
Series.
How can you obtain more current than one battery can be produced?
By connecting additional batteries in parallel.
What are the polarity of the electrodes within a battery?
The anode is positive
The cathode is negative
The potential between the two electrodes of a cell depends almost entirely on?
The materials in the plates and the electrolyte.
Standard cells are not used as a source of ______. They are used for?
Energy,
Checking very sensitive laboratory instruments.
What is the most widely used cell in modern storage batteries?
The lead cell.
The active part of the positive plate of the charged cell is?
Lead peroxide.
The active part of the negative plate of the charged cell is?
Sponge lead.
What is the electrolyte in a lead acid battery?
Sulphuric acid diluted with pure water.
