Question

Which battery is used in aeroplanes?
A.) Dry cell battery
B.) Lead acid battery
C.) Emission cell
D.) None of these

Answer 1

Aircraft batteries are used for many functions like ground power, emergency power, and fault clearing. Most small private aircraft use lead acid batteries. Most commercial and corporate aircraft use nickel-cadmium batteries. However, other lead acid types of batteries are becoming available such as the valve-regulated lead-acid batteries.
- Dry cell batteries are used where smaller outputs are required like in remotes, clocks etc.

Complete Solution :
Among the options present, it is the lead acid battery which is used in aeroplanes.
- Dry charged cell lead-acid batteries, also known as flooded or wet batteries, are assembled with electrodes (plates) that have been fully charged and dried. The electrolyte is added to the battery when it is placed in service, and battery life begins when the electrolyte is added. An aircraft storage battery consists of $6$ or $12$ lead-acid cells connected in series. The open circuit voltage of the $6$ cell battery is approximately $12$ volts, and the open circuit voltage of the $12$-cell battery is approximately $24$ volts. Open circuit voltage is measured when the circuit is not connected to a load
Another battery used in aeroplanes is nickel - cadmium battery.
- Nickel cadmium cell and lead acid battery are both secondary cells.
So, the correct answer is “Option B”.

Note: A dry cell is a type of electric battery, commonly used for portable electrical devices which consists of carbon cathode and zinc anode.
- A Nickel cadmium battery used in aircrafts consists of a metallic box, usually stainless steel, plastic-coated steel, painted steel, or titanium containing a number of individual cells. These cells are connected in series to obtain $12$ volts or $24$ volts.