The Full Wiki

Alternator: Quiz


Question 1: The output ________ of an alternator depends on the number of poles and the rotational speed.
SoundFrequencyElectromagnetic radiationWave

Question 2: In 1891, ________ patented a practical "high-frequency" alternator (which operated around 15 kHz).
Nikola TeslaAlexander Graham BellElectricityWardenclyffe Tower

Question 3: Automotive alternators use a set of rectifiers (________) to convert AC to DC.
Diode bridgeCenter tapCapacitorTransformer

Question 4: Once the engine is running and the alternator is generating, a ________ feeds the field current from the alternator main output, thus equalizing the voltage across the warning light which goes out.
Electronic componentVacuum tubeDiodeSemiconductor device

Question 5: [7] In comparison, very small high-performance permanent magnet alternators, such as those used for ________, achieve an efficiency around 60%.
CandleBicycle lightingLight-emitting diodeIncandescent light bulb

Question 6: Alternators are used in modern ________ to charge the battery and to power a car's electric system when its engine is running.
ThrottleVacuum servoAutomobileDisc brake

Question 7: On single alternator circuits the power is split between the engine starting battery and the domestic or house battery (or batteries) by use of a ________ or a mechanical switch.
Vacuum tubeSemiconductor deviceElectronic componentDiode

Question 8: Marine alternators are designed to be ________ so that brush sparking will not ignite explosive gas mixtures in an engine room environment.
Electrical equipment in hazardous areasFlammability limitMethaneGasoline

Question 9: The early machines were developed by pioneers such as ________ and Hippolyte Pixii.
J. J. ThomsonMichael FaradayWilliam Thomson, 1st Baron KelvinCharles-Augustin de Coulomb

Question 10: ________ as in pre-1960 motor cars
Brush (electric)Electrical generatorLinear motorElectric motor


Got something to say? Make a comment.
Your name
Your email address