Baker's A&P Oral and Practical Study Guide General Section with Complete Solutions
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Baker\'s A&P Oral
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Baker\'s A&P Oral
Baker's A&P Oral and Practical Study Guide General Section with Complete Solutions
Baker's A&P Oral and Practical Study Guide General Section with Complete Solutions
Baker's A&P Oral and Practical Study Guide General Section with Complete Solutions
What is the most important law applicable...
Baker's A&P Oral and Practical Study Guide General Section with Complete Solutions
What is the most important law applicable to the study of electricity? - ANSWER-Ohm's Law (V = I x R)
What are the elements of Ohm's Law? - ANSWER-Voltage (v), Current (I), Resistance (R)
What are 4 sources of electrical power? - ANSWER-Mechanical (generator/ alternator), Chemical (battery), Photoelectric (light), and Thermal (heat)
What does an electrical circuit consist of? - ANSWER-A source of electrical pressure (EMF), Resistance in the form of an energy consuming electrical device(light bulb), Conductors to provide a path for electron flow (wires). (a Power source, a load, and a conductor connecting the load and the power source)
What represents capacitance in an AC circuit? - ANSWER-A Capacitor
What is the function of a capacitor? - ANSWER-To store electricity
What is Inductance? - ANSWER-When voltage is induced by magnetic flux lines in a coil in an AC circuit. The induced voltage is opposite in direction to the applied voltage, and opposes any change in the alternating current.
What is impedance? - ANSWER-The total opposition for AC to flow caused by the combined effect of resistance, inductive reactance, and capacitive reactance in an AC circuit.
What is the unit of measurement of power in a DC circuit? - ANSWER-The Watt.
amp x volt = watt,
how many watts are in 1 horsepower? - ANSWER-746 watts
What is a kilowatt? - ANSWER-1000 watts
In a DC circuit, what occurs when voltage is increased, while the resistance remains the
constant? - ANSWER-There will be an increase in current What are the 3 types of DC electrical circuits? - ANSWER-They are Series circuits, Parallel circuits, and complex circuits (series-parallel)
A 24 volt lead-acid battery has how many cells, and what is each cell rated at? - ANSWER-It has 12 cells, and each cell is rated at 2 volts
What should be the specific gravity of the electrolytes in a fully charged lead acid battery? - ANSWER-It should be between 1.275 and 1.300
What instrument is used to determine the specific gravity of electrolyte in a lead acid battery? - ANSWER-a Hydrometer
What can a hydrometer not be used to determine the charge of a nickel cadmium battery? - ANSWER-The specific gravity of the electrolyte in a nickel cadmium battery does not change appreciably during charge or discharge of the battery.
When using a hydrometer to check the charge of a lead acid battery, at what temperatures must a correction factor be applied to the reading? - ANSWER-
Adjustments must be made if the temperature of the electrolyte is above 90° F or Below 70°F
What is electromagnetic induction? - ANSWER-It is the transfer of electrical energy by means of a magnetic field (lines of flux). Transferring voltage from one conductor to another without physically touching
What is the principle of a transformers operation? - ANSWER-electromagnetic induction
How are battery compartments protected from against corrosion? - ANSWER-They are coated with special corrosion resistant paint such as a bituminous paint, an asphaltic (tar based) paint, or with polyurethane enamel.
What are the 3 types of paints used in a battery compartment? - ANSWER-Asphaltic paint, bituminous paint, and polyurethane enamel paint.
What should be the correct electrolyte level in a properly serviced battery? - ANSWER-It
should be approximately 3/8 inches above the plates. if the battery has baffle plates above the cell plates
In a properly serviced battery that has baffle plates above the cell plates, how high should the correct electrolyte level be? - ANSWER-The electrolyte level should be up to the hole in the baffle plate in each cell.
What are paralleling generators, and how is the load distributed? - ANSWER-This is when 2 or more generators are operated at the same time to supply power for a load that must be shared equally.
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