ATT FC Week 12 Exam Questions With 100% Correct Answers 2023

Any device that has a spinning or rotating shaft and uses electricity as the input or output. - Rotating Machine What are the two categories of rotating machines? - Motors, Generators What type of device utilizes a mechanical input? - Generator What type of device produces a mechanical output? - Motor What type of device utilizes an electrical input? - Motor What type of device produces an electrical output? - Generator What are the two categories of motors? - Incremental, Continuous What can create DC and AC voltage? - Generator ____ performs in a manner that a specific electrical input will generate a pre-determined mechanical output? - Incremental Operation ____ will maintain a constant mechanical output as long as there is an electrical input. - Continuous Motors A ____ uses digital pulses. - stepper incremental motor The ____ uses specific magnitudes of voltages. - synchro incremental motor The typical motor consists of what two components? - Two Poles (magnets), Armature apparatus (conductor) Generators produce voltage and current by ____. - Induction, moving a conductor through a magnetic field The ____ of a motor or generator is a calculation of how fast the shaft rotates. - speed Speed can be determined by ____. - Revolutions Per Minute (RPM) The RPM of a Motor or Generator is ____ to the amount of voltage. - directly proportional ____ that causes the shaft of the motor or generator to rotate. - Torque is the twisting force Torque is maximum at ____. - locked condition One horsepower corresponds to what power rate? - 33,000 ft-lbs/min Watts/____ = Horsepower - 746 Torque is ____ to RPM and voltage. - inversely proportional The general voltage that opposes the original conductor magnetic field and the applied voltage is ____. - Counter Electromotive Force (CEMF) CEMF ____ as speed increases. - increases CEMF is ____ to voltage - proportional CEMF is ____ to Torque - inversely proportional Torque is measured in ____ - foot pounds Torque is inversely proportional to ____, ____, and ____. - ____ means how well the motor or generator is able to change power from one form to another. - Efficiency ____ means that input power equals the output power. - 100% efficiency DC Motors operate on what principle? - magnetism—attraction and repulsion In a motor starting current is ____ than the running current. - higher What are the three types of DC Motors? - Series, Shunt, and PM What is the principle of magnetism that allows a generator to power its own stator windings and still generate an output voltage? - Retentivity Pulsating DC gets eliminated by using a ____. - multiple-loop armature What is the primary difference between a DC Motor and a DC Generator? - The power source to the rotor is replaced in a generator with a load What are the three types of DC Generators? - Separately Excited, PM, Self-Excited What is another name for a Motion Detector? - Transducer Electronic motion sensors are devices that change ____ into ____. - velocity, frequency ____ is a change of position of an object per time. - Motion A motion detector circuit will not sense ____. - position ____ is when acceleration at all points is fixed between two points. - Linear acceleration What is the relationship between distance and time when solving for velocity (V)? - Change in Distance / Change in Time