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25 Cards in this Set
- Front
- Back
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The letter symbol used to represent electrical current is....
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I
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The letter symbol used to represent electrical pressure is... ____ or ____
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V or E
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The letter symbol used to represent electrical resistance is...
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R
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The point in an aircraft electrical system from which the various circuits get their power is called a/an..
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bus
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Three things that happen in an electrical circuit when current flows through it are:
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Heats up
Magnetic Field Voltage drops |
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The longer line in the symbol for a battery indicates the........(positive or negative) terminal.
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positive
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Electrons flowing in an electrical circuit flow in the (same or opposite) direction as the arrowheads in a semiconductor diode symbol.
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opposite
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Conventional current in an electrical circuit is assumed to flow in the...(same or opposite) direction as the arrowheads in a semiconductor diode symbol.
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same
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Three things that must be included in all complete electrical circuits are:
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Source of electric, a load, and conductors.
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If the bar in the symbol for a semiconductor diode is connected to the negative terminal of a battery, the diode is (forward or reverse) biased.
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forward
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A forward-biased diode act as a/an (open or closed) switch.
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closed
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The voltage drop across a forward biased silicon diode is approximately____volt.
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.7
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The voltage drop across a forward biased silicon diode (does, does not) vary with the current flow flowing through it.
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does not
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A semiconductor device that can be used as a voltage sensor is a/an _____.
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zener diode
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A zener diode used as a voltage regulator is (forward or reverse) biased.
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reverse
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An electrical relay has a (fixed or movable) core.
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fixed
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A solenoid has a (fixed or movable) core.
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movable
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When the base of a NPN transistor has the same polarity as the collector, th etransistor acts as a/an (open or closed) switch.
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closed
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When a transistor is connected in an amplifier circuit, bringing its base polarity closer to that of the collector(increases or decreases) the collector-emitter current.
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increases
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A semiconductor device that acts in the same way as a holding relay is a _________
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silicon controlled rectifier
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In a complete series circuit, the sum of the voltage drop is the same as the applied voltage. This sentence is (true or false)
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True
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The voltage drop across an open switch in a series circuit is (zero volts or battery voltage)
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battery voltage
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The voltage drop across a closed switch in a series circuit is (zero volts or battery voltage)
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Zero volts
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The amount of current that flows through each path of a parallel circuit is determined by the ______ of the path.
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resistance
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The voltage across each path of a parallel circuit is equal to the ____________.
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battery voltage
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