Term
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Definition
| Induced voltage which is opposite in direction to the applied voltage |
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Term
| What represents capacitance in AC circuits? |
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Definition
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Term
| Why should nickel-cadmium batteries and lead-acid batteries not be stored or serviced in the same area? |
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Definition
| The Ni-Cad electrolyte is chemically opposite to the lead-acid electrolyte. Fumes from the lead-acid battery can contaminate Ni-Cad electrolyte |
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Term
| What is the most important law applicable to the study of electricity? |
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Definition
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Term
| What causes opposition to the flow of applied current in an AC circuit? |
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Definition
| Inductive and capacitance reactance |
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Term
| What is the function of a capacitor? |
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Definition
| It serves as a reservoir or storehouse for electricity |
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Term
| What are the elements of Ohm's law? |
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Definition
| Voltage Current and Resistance |
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Term
| How many cells make up a lead-acid battery rated at 24 volts? |
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Definition
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Term
| How is Ohm's law expressed as an equation? |
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Definition
Current=Voltage/Resistance
Resistance=Voltage/Current and Voltage=Current X Resistance |
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Term
| What does an electrical circuit consist of? |
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Definition
| A source of electrical pressure. Resistance in the form of an energy-consuming device and conductors in the form of wires to provide electron flow |
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Term
| What unit is used to measure power in DC circuits? |
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Definition
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Term
| How many watts equal 1 kilowatt? |
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Definition
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Term
| What are 3 types of DC electrical circuits? |
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Definition
| Series, parallel and series parallel |
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Term
| What could cause a nickel-cadmium battery to fail to deliver its rated capacity? |
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Definition
| Cell imbalance or faulty cells |
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Term
| What current changes occur in a DC circuit when the applied voltage is increased and the resistance remains constant? |
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Definition
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Term
| What functions will most multimeters perform? |
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Definition
| They read amperes, volts and ohm's |
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Term
| What are some advantages of AC circuits over DC circuits in aircraft? |
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Definition
| AC can be transmitted over long distances more readily and economically than DC. AC voltages can be increased or decreased by means of transformers |
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Term
| What should be the specific gravity of the electrolyte in a fully charged lead-acid battery? |
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Definition
It should read between 1.275 and 1.300 |
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Term
| What is the effect of temperature on specific gravity of the electrolyte when checking a lead-acid battery? |
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Definition
| Temperature changes the density of the electrolyte only when greater than 90 degrees F or less than 70 degrees F |
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Term
| Why is a specific gravity check of the electrolyte in a nickel-cadmium battery not acceptable to determine battery charge? |
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Definition
| There is no appreciable change in the specific gravity of the electrolyte during charge or discharge |
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