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Tech Bowl: Electricity
Tech Bowl Questions for Electricity
74
Electrical Engineering
Not Applicable
03/03/2012

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Cards

Term
What is the unit of electrical power?
Definition
watt
Term
What is a two terminal device which permits current to flow in only one direction called?
Definition
diode
Term
In 1911, Kammerlingh Onnes, a Dutch scientist, discovered what electrical device?
Definition
superconductor
Term
What is a charge in motion referred to as?
Definition
current
Term
What electrical item is calculated by the product of the resistance times the current squared (R*l^2)?
Definition
power
Term
An intrinsic conductor is also known as _________.
Definition
semiconductor
Term
Which Italian scientist developed the battery?
Definition
Alessandro Volta
Term
_________ are charges at rest.
Definition
electrostatic
Term
DC and AC stand for _________.
Definition
Direct Current and Alternating Current
Term
P-type semiconductors have an abundance of _________ charge carriers.
Definition
positive
Term
Who first discovered the relationship between electricity and magnetism by deflecting a compass point with an electric current?
Definition
Hans Christian Oersted
Term
What is a charged atom called?
Definition
ion
Term
An alternator generates _________ by rotating a loop of wire between the poles of a permanent magnet.
Definition
current
Term
In logic circuits, if one input is on and the other input is off, what is the result of an OR gate?
Definition
on
Term
In 1948, the transistor was invented by _________.
Definition
Bell Laboratories
Term
The _________ is the metal strip in a DC motor that picks up the current.
Definition
commutator
Term
What is the unit of measurement by which electric bills are calculated?
Definition
kilowatt-hour
Term
The process of adding impurities to a crystal is _________.
Definition
doping
Term
Who discovered electromagnetic induction?
Definition
Michael Faraday
Term
When current goes through a wire a _________ is created.
Definition
magnetic field
Term
What is the storage of electric charge?
Definition
capacitance
Term
Switching circuits or _________ perform repetitive operations.
Definition
digital integrated circuits
Term
Who discovered that lighting is a form of electricity?
Definition
Benjamin Franklin
Term
What is a positively charged ion?
Definition
cation
Term
What is the unit of capacitance?
Definition
Farad
Term
What electrical component is responsible for the miniaturization of electronic equipment?
Definition
integrated circuit
Term
The time required for a capacitor to charge or discharge is dependent on the _________ in the circuit.
Definition
resistance
Term
What is the name for the positive electrode?
Definition
anode
Term
A piece of wire designed to melt when current flowing through reaches a certain value is a _________.
Definition
fuse
Term
Amplifying and switching are two popular uses for what solid-state device?
Definition
transistor
Term
What is the ability of a battery to deliver power over a given time?
Definition
battery rating
Term
What removes unwanted frequency components of an electrical signal?
Definition
capacitor
Term
The _________ of a diode is the max current that the device can conduct for a partial cycle of operation.
Definition
peak rectified current
Term
_________ is an electronic component capable of change from response in an external signal.
Definition
active device
Term
Metal conducts electricity better as it becomes _________.
Definition
colder
Term
A _________ coil produces high voltage from a low one.
Definition
induction
Term
In logic gates, if one input is on the the other is off, what is the result of a NAND gate?
Definition
on
Term
A _________ is a coil of wire wound around a core of magnetic material.
Definition
electromagnet
Term
A quantitive measure of an electric charge is _________.
Definition
coulombs
Term
What causes static electricity?
Definition
friction
Term
What is the main part of an electrical amplifier?
Definition
transistor
Term
An alternate path in a circuit is _________.
Definition
shunt
Term
A _________ is a solution of acid and water.
Definition
electrolyte
Term
When AC is converted to DC, it is said to be _________.
Definition
rectified
Term
In logic circuits, if one input is on and the other is off, what is the result of a NOR circuit?
Definition
off
Term
The property of a circuit that opposes a change in voltage in a circuit is _________.
Definition
capacitance
Term
The production of electricity in a material through the application of pressure is said to be the _________.
Definition
piezo electric effect
Term
What law states that the current in a parallel circuit is equal to the sum of the current in its branches?
Definition
Kirchoff's Current Law of Parallel Circuits
Term
Base, emitter, and collector are the three connections to a _________.
Definition
transistor
Term
Name a known shield against magnetism.
Definition
no known shield exists
Term
Converting energy from one form to another is __________.
Definition
transducing
Term
The basic instrument used to measure AC signal voltages and waves is the __________.
Definition
oscilliscope
Term
What type of semiconductor has an abundance of electrons as carriers?
Definition
n-type
Term
What law states that the voltage across all branches of a parallel circuit are equal?
Definition
Kirchoff's Voltage Law
Term
A popular way of finding an unknown resistance in a circuit is with a __________.
Definition
ohm meter
Term
The working voltage direct current is the voltage at which a can withstand without destruction to the dielectric.
Definition
capacitor
Term
What are the impurities added to semiconductors called?
Definition
dopants
Term
Of the following, which wire size is the biggest?
36 awg
12 awg
24 awg
6 awg
Definition
6 awg
Term
A __________ is whenever electrons are allowed to return to the source without passing through the complete circuit.
Definition
short circuit
Term
What type of wave represents alternating current?
Definition
sine wave
Term
What type of diode is purposely manufactured to operate in the reverse direction?
Definition
zener
Term
A popular mathematical equation to solve for current, voltage, and resistance is __________.
Definition
Ohm's law
Term
The __________ of a conductor is influences by material type, size, length, and temperature.
Definition
resistance
Term
Which of the following is a rotating machine which concerts mechanical energy to electrical energy?
Definition
dynamic
Term
SSI, MSI, LSI, and VLSI are ways of classifying the component density of __________.
Definition
integrated circuits
Term
What is the free movement of electrons in an electric field?
Definition
conduction
Term
Low wattage resistors are generally labeled by a __________.
Definition
color code
Term
The __________ replaced the vacuum tube in electrical and electronic devices.
Definition
transistor
Term
__________ is the measure of resistance that relates purely to the properties of the material.
Definition
resistivity
Term
The __________ is determined by the number of turns of wire, the current in the wire coil, the core material, and the ratio of the coil diameter to the coil length.
Definition
strength of an electromagnet
Term
__________ is equal to 6.24 x 10e18 electrons.
Definition
1 Coulomb
Term
In diodes, __________ is the maximum voltage that can be applied to the diode in the reverse direction without destroying it.
Definition
Peak Inverse Voltage
Term
What is an electrical switch that can be operated wither magnetically or electrically?
Definition
relay
Term
A relay is an example of a __________ switch.
Definition
magnetic
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