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Basic Electricity
General, Oral study guide
34
Aviation
Undergraduate 1
03/13/2013

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Cards

Term
WHAT IS THE BASIC UNIT OF VOLTAGE?
Definition
THE VOLT
Term
WHAT IS THE BASIC UNIT OF CURRENT?
Definition
THE AMP
Term
WHAT IS THE BASIC UNIT OF RESISTANCE?
Definition
THE OHM
Term
WHICH LAW OF ELECTRICITY IS THE MOST IMPORATANT FOR AND AIRCRAFT MECHANIC TO KNOW?
Definition
OHM'S LAW.
Term
WHAT ARE THE THREE ELEMENT IN OHM'S LAW?
Definition
RESISTANCE, VOLTAGE AND CURRENT. (OHM'S, VOLT'S, AMP'S)
Term
WHAT ARE FIVE SOURCE'S OF ELECTRICAL ENERGY?
Definition
MAGNATISM, HEAT, LIGHT, CHEMICAL, AND PRESSURE.
Term
WHAT FOUR THINGS AFFECT THE RESISTANCE OF AN ELECTRICAL CONDUCTOR?
Definition
THE MATERIAL, CROSS-SECTIONAL AREA, LENGTH AND TEMPERATURE.
Term
HOW CAN YOU TELL THE RESISTANCE OF A COMPOSITION RESISTOR?
Definition
THE SERIES COLOR BANDS ON THE RESISTOR.
Term
WHAT THREE THINGS MUST ALL ELECTRICAL CIRCUTS CONTAIN?
Definition
A SOURCE OF ELECTRICAL ENERGY, A LOAD TO USE THE ENERGY, AND CONDUCTORS TO JOIN THE SOURCE AND THE LOAD.
Term
WHAT IS THE PURPOSE OF A CAPACITOR?
Definition
TO STORE ELECTRICAL ENERGY.
Term
WHAT IS THE BASIC UNIT OF CAPACITANCE?
Definition
THE FARAD.
Term
WHAT IS THE BASIC UNIT OF INDUCTANCE?
Definition
THE HENRY
Term
WHY SHOULD ELECTROLYTIC CAPASITORS NOT BE USED IN AN AC CIRCUIT?
Definition
THEY ARE POLARIZED. (WILL PASS CURRENT OF ONE POLARITY, BUT WILL BLOCK CURRENT OF THE OPPOSITE POLARITY)
Term
WHAT IS MEANT BY INDUCTANCE?
Definition
THE ABILITY TO STORE ELECTRICAL ENERGY IN ELECTROMAGNETIC FIELDS.
Term
WHAT IS MEANT BY IMPEDANCE?
Definition
THE TOTAL OPPOSITION TO THE FLOW OF ALTERNATING CURRENT. (THE VECTOR SUM OF RESISTANCE, CAPACITIVE REACTANCE AND INDUCTIVE REACTANCE)
Term
HOW CAN YOU FIND THE POLARITY OF AND ELECTROMAGNET?
Definition
HOLD THE MAGNET IN YOUR LEFT HAND(FINGERS ON THE COIL IN THE DIRECTION OF ELECTRON FLOW) THUMB WILL POINT TO THE NORTH END OF THE ELECTROMAGNET.
Term
IN WHAT UNITS IS IMPEDANCE MEASURED?
Definition
IN OHMS
Term
WHAT IS THE BASIC UNIT OF ELECTRICAL POWER IN A DC CIRCUIT?
Definition
THE WATT
Term
WHAT IS MEANT BY A KILOWATT?
Definition
1,000 WATT'S (ONE THOUSAND WATT'S)
Term
WHAT HAPPENS TO THE CURRENT IN A DC CIRCUIT IF THE VOLTAGE IS INCREASED BUT THE RESISTANCE REMAINS THE SAME?
Definition
THE CURRENT INCREASES.
Term
WHAT ARE THREE TYPES OF DC CIRCUITS? REGARDING PLACEMENT OF VARIOUS CIRCUIT COMPONENTS.
Definition
PARALLEL, SERIES, SERIES-PARALLEL.
Term
HOW MANY CELLS ARE THERE IN A 24-VOLT LEAD-ACID BATTERY?
Definition
12.
Term
WHAT IS THE SPECIFIC GRAVITY OF THE ELECTROLYTE IN A FULLY CHARGED LEAD ACID BATTERY?
Definition
BETWEEN 1.275 AND 1.300
Term
WHAT TEMPERATURE RANGE OF THE ELECTROLYTE IN A LEAD ACID BATTERY DOES NOT REQUIRE A CORRECTION WHEN MEASURING SPECIFIC GRAVITY?
Definition
BETWEEN 70 AND 90 DEGREES FAHRENHEIT
Term
WHAT INSTRUMENT DO YOU USE TO MEASURE SPECIFIC GRAVITY OF THE ELECTROLYTE AND A LEAD-ACID BATTERY?
Definition
A HYDROMETER.
Term
HOW IS A LEAD-ACID BATTERY TREATED TO PROTECT IT FROM CORROSION?
Definition
PAINT IT WITH ASPHALITIC(TAR BASE) PAINT OR POLYURETHANE ENAMEL
Term
WHAT IS USED TO NEUTRALIZE SPILLED ELECTROLYTE FROM A LEAD-ACID BATTERY?
Definition
A BICARBONATE SODA AND WATER SOLUTION.
Term
HOW HIGH SHOULD THE ELECTROLYTE LEVEL BE IN A PROPERLY SERVICED LEAD-ACID BATTERY?
Definition
UP TO THE LEVEL OF THE INDICATOR IN THE CELL.
Term
WHAT PRECAUTIONS SHOULD BE TAKEN IN A MAINTENACE SHOP WHERE BOTH LEAD-ACID AND NICKEL-CADMIUM BATTERIES ARE SERVICED?
Definition
THE TWO TYPES OF BATTERIES SHOULD BE KEPT SEPERATE. AS WELL AS THE TOOLS USED ON THEM.
Term
WHY IS A HYDROMETER NOT USED TO MEASRE THE STATE OF CHARGE OF A NICKEL-CADMIUM BATTERY?
Definition
THE ELECTROLYTE DOES NOT ENTER INTO A CHEMICAL CHANGES WHEN BATTERY IS CHARGED OR DISCHARGED. (ITS SPECIFIC GRAVITY DOES NOT CHANGE APPRECIABLY) 
Term
WHAT IS USED TO NEUTRALIZE SPILLED ELECTROLYTE FROM A NICKEL-CADMIUM BATTERY?
Definition
A SOLUTION OF BORIC ACID AND WATER.
Term
WHAT IS MEANT BY ELECTROMAGNETIC INDUCTION?
Definition
THE TRANSFER OF ELECTRICAL ENERGY FROM ONE CONDUCTOR TO ANOTHER THAT IS NOT ELECTRICALLY CONNECTED.
Term
HOW MANY OHM'S ARE IN A MEGOHM?
Definition
ONE MILLION.(1,000,000)
Term
WHAT PART OF AN AMP IS A MILLIAMP?
Definition
ONE THOUSANDTH. (0.001)
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