Exam (elaborations)
ACDC Drives Exam With Correct Questions And Answers 2024
ACDC Drives Exam With Correct Questions And Answers 2024
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Uploaded on
August 19, 2024
Number of pages
9
Written in
2024/2025
Type
Exam (elaborations)
Contains
Questions & answers
the direct
acdc drives exam with correct questions
during testing of the incoming power supply of an
during a converter and inverter test a good semic
to control ac voltages at least two transistors a
Institution
ACDC Drives
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ACDC Drives
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ACDC Drives Exam With Correct Questions
And Answers 2024
During .testing .of .the .incoming .power .supply .of .an .electric .motor .drive, .a .voltage
.difference .greater .than .3% .between .no-load .indicates .that .the .electric .motor .drive .does
.not .have .sufficient .capacity .(kVA) .or .the .drive .is .overloaded .- .correct .answer.True
During .a .converter .and .inverter .test, .a .good .semiconductor .reads .OL .when .forward .bias .-
.correct .answer.False
To .control .AC .voltages, .at .least .two .transistors .are .used .per .phase .- .correct
.answer.False
The .direction .of .rotation .of .a .motor .cannot .be .changed .by .interchanging .two .line
.conductors .to .an .electric .motor .drive .because .the .line .conductors .feed .the .converter
.section, .which .produces .DC .bus .voltage. .- .correct .answer.True
A(n)___ .injury .is .one .of .the .most .common .injuries .resulting .in .lost .time .in .the .workspace .-
.correct .answer.back
The .traditional .methods .used .to .provide .reduced-voltage .starting .of .large .horsepower
.motors .include .all .of .the .following .except .___ .- .correct .answer.manual .motor .starting
A .fixed .resistor .is .a .resistor .that .contains .fixed .tap .points .of .different .resistances .- .correct
.answer.False
The .converter .section .of .a .drive .receives .the .incoming .AC .voltage .and .changes .the
.voltage .to .DC .- .correct .answer.True
During .a .conductor .and .load .insulation .spot-test, .the .megohmmeter .readings .must .be .a
.minimum .of .2 .M .Ohms .and .be .relatively .close .to .each .other .- .correct .answer.True
Environmental .conditions .such .as .temprature .and .humidity .do .not .affect .the .readings
.taken .by .a .megohmmeter .- .correct .answer.False
Electric .motor .drives .can .be .the .cause .of .victims .or .harmonics .and .related .problems. .-
.correct .answer.True
, Motor .torque .is .the .force .that .produces .or .tends .to .produce .motor .rotation .of .a .motor
.shaft. .- .correct .answer.True
Wind, .water, .and .the .sun .are .renewable .energy .sources. .- .correct .answer.True
Overload .relays .must .be .sized .and .set .for .the .nameplate .___ .of .a .motor .in .order .to
.protect .the .motor .- .correct .answer.Current
A .true-rms .gives .the .correct .reading .regardless .of .the .waveform .- .correct .answer.True
The .speed .(rpm) .of .a .DC .motor .is .proportional .to .the .voltage .applied .to .the .motor .-
.correct .answer.True
The .nameplate .of .a .motor .includes .the .name .of .the .manufacturer .- .correct .answer.True
Inductive .loads .such .as .solenoids .or .the .coils .of .relays .and .contactors .are .a .common
.source .of .electromagnetic .interference .(EMI) .in .electric .motor .drives .- .correct
.answer.True
During .the .final .electric .motor .drive .and .motor .test, .the .current .readings .of .each .of .the
.load .conductors .must .be .equal .or .very .close .- .correct .answer.True
Solid-state .devices .cannot .be .damaged .or .destroyed .by .a .10 .V .electrostatic .discharge. .-
.correct .answer.False
Converter .and .inverter .tests .indicate .which .group .of .paralleled .semiconductors .are .bad,
.but .not .the .individual .component .- .correct .answer.True
Use .only .a .class .___ .rated .fire .extinguisher .on .electrical .equipment .- .correct .answer.C
Personal .protective .equipment .is .gear .worn .by .a .technician .to .reduce .the .possibility .of
.injury .in .the .work .area .- .correct .answer.True
A .manual .motor .starter .is .an .electric .motor .drive .- .correct .answer.False
Electric .motor .drives .provide .an .adjustable .torque .boost .that .allows .the .drive .to .apply
.more .torque .- .correct .answer.True
Mechanical .energy .is .energy .made .by .the .flow .of .electric .charge .- .correct .answer.False
Typically, .for .every .___ .F .temperature .rise .above .the .NEMA .rating, .the .usable .service .life
.of .a .motor .is .cut .in .half .- .correct .answer.18
A .bearing .current .is .the .result .of .induced .voltage .in .the .motor .rotor .created .by .the .electric
.motor .drive .- .correct .answer.True