TPC Basic Electricity & Electronics Exam
Questions and Answers
All .modern .electrical .equipment .is .based .on .an .understanding .of .the .relationship .between ._______
__
and ._________. .- .(correct .answer) .-electricity; .magnetism
If .a .gap .exists .in .an .electric .circuit, .the .circuit .is .said .to .be .- .(correct .answer) .-open
Atomic .particles .that .have .a .positive .electrical .charge .are .called .- .(correct .answer) .-protons
Static .electricity .- .(correct .answer) .-does .not .move
You .may .find .electricity .easier .to .understand .if .you .think .of .voltage .as .electrical .- .(correct .answer) .-
pressure
Identical .cells .connected .in .__________ .provide .greater ._________ .than .a .single .cell. .- .
(correct .answer) .-parallel; .current .capacity
You .must .be .careful .when .recharging .lead-acid .batteries .because .they .- .(correct .answer) .-
can .explode
can .throw .acid .around .the .area
produce .flammable .gases
"all .of .the .above" .ALL .IS .ANSWER
The .negative .plate .in .an .electrochemical .cell .is .called .the .- .(correct .answer) .-cathode
Which .device .for .producing .a .potential .difference .consists .of .two .different .metals .welded .together?
.- .(correct .answer) .-Thermocouple
, An .optoisolator .receives .a .low-
voltage .signal .on .the .LED .side .of .the .device .and .triggers .a .device .that
produces .a .___________ .voltage .on .the .output .side. .- .(correct .answer) .-higher
The .purpose .of .a .potentiometer .is .to .- .(correct .answer) .-divide .a .potential .difference .into .two .parts
Power .is .measured .in .- .(correct .answer) .-watts
Variable .resistors .in .the .range .of
.^1/_2 .to .2 .watts .are .called ._____________, .while .those .in .the .range .of
5 .to .1000 .watts .are .called ._____________. .- .(correct .answer) .-potentiometers; .rheostats
If .the .fourth .color .band .on .a .resistor .is .silver, .the .measured .value .of .resistance .is .within ._________
% .of
the .marked .value .- .(correct .answer) .-10
Which .of .the .following .diode .operating .specifications .defines .the .maximum .potential .difference .that
.can
be .applied .across .a .diode .in .the .reverse .direction .without .destroying .it? .- .(correct .answer) .-
Peak .inverse .voltage
The .center .section .of .a .transistor .is .- .(correct .answer) .-base
A .cathode .has .a .______________ .charge. .- .(correct .answer) .-negative
In .a .vacuum .tube, .the .anode .is .a .- .(correct .answer) .-metal .plate .with .a .positive .charge
The .maximum .current .that .a .semiconductor .diode .can .conduct .for .part .of .an .ac .cycle .is .called .the
__________ .current. .- .(correct .answer) .-peak .rectified
In .equations, .L .stands .for .inductance .in .henrys .and .C .stands .for .capacitance .in .- .(correct .answer) .-
farads
What .is .the .standard .frequency .of .alternating .current .in .the .United .States? .- .(correct .answer) .-
60 .Hz
One .complete .cycle .of .alternating .current .is .generated .by .a ._________-degree .rotation .of .a .two-
pole
alternator. .- .(correct .answer) .-360
Power .companies .use ._________ .generators .and .transformers .for .cost-
effective .transmission .over .long
Questions and Answers
All .modern .electrical .equipment .is .based .on .an .understanding .of .the .relationship .between ._______
__
and ._________. .- .(correct .answer) .-electricity; .magnetism
If .a .gap .exists .in .an .electric .circuit, .the .circuit .is .said .to .be .- .(correct .answer) .-open
Atomic .particles .that .have .a .positive .electrical .charge .are .called .- .(correct .answer) .-protons
Static .electricity .- .(correct .answer) .-does .not .move
You .may .find .electricity .easier .to .understand .if .you .think .of .voltage .as .electrical .- .(correct .answer) .-
pressure
Identical .cells .connected .in .__________ .provide .greater ._________ .than .a .single .cell. .- .
(correct .answer) .-parallel; .current .capacity
You .must .be .careful .when .recharging .lead-acid .batteries .because .they .- .(correct .answer) .-
can .explode
can .throw .acid .around .the .area
produce .flammable .gases
"all .of .the .above" .ALL .IS .ANSWER
The .negative .plate .in .an .electrochemical .cell .is .called .the .- .(correct .answer) .-cathode
Which .device .for .producing .a .potential .difference .consists .of .two .different .metals .welded .together?
.- .(correct .answer) .-Thermocouple
, An .optoisolator .receives .a .low-
voltage .signal .on .the .LED .side .of .the .device .and .triggers .a .device .that
produces .a .___________ .voltage .on .the .output .side. .- .(correct .answer) .-higher
The .purpose .of .a .potentiometer .is .to .- .(correct .answer) .-divide .a .potential .difference .into .two .parts
Power .is .measured .in .- .(correct .answer) .-watts
Variable .resistors .in .the .range .of
.^1/_2 .to .2 .watts .are .called ._____________, .while .those .in .the .range .of
5 .to .1000 .watts .are .called ._____________. .- .(correct .answer) .-potentiometers; .rheostats
If .the .fourth .color .band .on .a .resistor .is .silver, .the .measured .value .of .resistance .is .within ._________
% .of
the .marked .value .- .(correct .answer) .-10
Which .of .the .following .diode .operating .specifications .defines .the .maximum .potential .difference .that
.can
be .applied .across .a .diode .in .the .reverse .direction .without .destroying .it? .- .(correct .answer) .-
Peak .inverse .voltage
The .center .section .of .a .transistor .is .- .(correct .answer) .-base
A .cathode .has .a .______________ .charge. .- .(correct .answer) .-negative
In .a .vacuum .tube, .the .anode .is .a .- .(correct .answer) .-metal .plate .with .a .positive .charge
The .maximum .current .that .a .semiconductor .diode .can .conduct .for .part .of .an .ac .cycle .is .called .the
__________ .current. .- .(correct .answer) .-peak .rectified
In .equations, .L .stands .for .inductance .in .henrys .and .C .stands .for .capacitance .in .- .(correct .answer) .-
farads
What .is .the .standard .frequency .of .alternating .current .in .the .United .States? .- .(correct .answer) .-
60 .Hz
One .complete .cycle .of .alternating .current .is .generated .by .a ._________-degree .rotation .of .a .two-
pole
alternator. .- .(correct .answer) .-360
Power .companies .use ._________ .generators .and .transformers .for .cost-
effective .transmission .over .long
