Compare The Construction And Operation Of A Ni-Cad Battery With A Lead-Acid Battery

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Q1. Describe the construction and operation of a Ni-Cad battery. Compare and contrast the Ni-Cad battery with a Lead-Acid battery.
a. Construction:

figure 1. Ni-cad battery construction

Ni-Cad battery refers to Nickel-cadmium battery which is widely used in industrial world. Basically, the Ni-Cad battery consists of positive and negative plates, separators, electrolyte, cell vent, and cell container. The positive plate in Ni-Cad battery is Nickel Hydroxide Ni(OH)2. However, the negative plate is Cadmium. The electrolyte is made from potassium hydroxide solution (KOH) in distilled water. However, the electrolyte which is made from potassium hydroxide solution dose not enter into chemical reaction with the plates or other chemicals. The
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A fully charged nickel cadmium batteries have a lower output capacity and higher discharge rate than lead acid batteries. However, the lead acid batteries have much lower recharge cycle life than nickel cadmium batteries. Nickel cadmium batteries have the ability to charge and discharge more times than lead acid batteries, “nickel-cadmium battery can be charged and discharged over twice as many times as a lead-acid battery”. The nominal voltage of the nickel cadmium batteries is 1.2V. However, the lead acid batteries nominal voltage is 2V …show more content…
Describe, with numerical examples, the operation of a series LCR Acceptor circuit. An RLC series circuit is a circuit where a battery, resistor (with resistance R), an inductor (with inductance L) and a capacitor (with capacitanceC), RLC, are all connected in one complete loop (a series circuit) (Wood.D,2003). It occurs when resistive and inductive are equal in magnitude however it cancels each other because they are 180 degrees apart in phase.
When Appling alternative voltage to an inductor, capacitor and resistance

Q3.Describe the construction and operation of a brushless ac generator. What are the advantages of this design? a/ construction: Figurer.2 shows the component of AC brushless generator.

The AC brushless generator converts the mechanical energy into electrical energy. It has four components which are armature (rectangular coil which is made of copper wire), field magnets which is a strong permanent magnet, current collection arrangement, slip rings and brushes. Slip rings connected to the leads of armature, it helps to provide movable contact. The brushes used to pass the current from the armature to slip rings. As it is shown in figure

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