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ATT TEST 11 EXAM LATEST 2025 100 QUESTIONS AND VERIFIED ANSWERS ALREADY GRADED A., Exams of Physics

ATT TEST 11 EXAM LATEST 2025 100 QUESTIONS AND VERIFIED ANSWERS ALREADY GRADED A. What are two types of controllers used by DC motors? - CORRECT ANSWER>>Amplitude and Time control What are 3 types of AC motors? - CORRECT ANSWER>>Universal, induction, synchronous Which AC motor is used for large HP or special applications? - CORRECT ANSWER>>Synchronous hat is a motor - CORRECT ANSWER>>a device that converts electrical energy into mechanical energy What is a generator - CORRECT ANSWER>>a device that converts mechanical energy into electrical energy

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2024/2025

Available from 07/04/2025

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ATT TEST 11 EXAM LATEST 2025 100 QUESTIONS AND
VERIFIED ANSWERS ALREADY GRADED A.
What are two types of controllers used by DC motors? - CORRECT ANSWER>>Amplitude
and
Time control
What are 3 types of AC motors? - CORRECT ANSWER>>Universal, induction,
synchronous
Which AC motor is used for large HP or special applications? - CORRECT
ANSWER>>Synchronous
hat is a motor - CORRECT ANSWER>>a device that converts electrical energy into
mechanical energy
What is a generator - CORRECT ANSWER>>a device that converts mechanical energy
into electrical energy
What is an incremental motor - CORRECT ANSWER>>a motor whose shaft rotates a
specific distance in degrees
What is a continuous motor - CORRECT ANSWER>>one whose shaft continuously rotates
without
interruption when input is applied
What type of generator produces DC volts and uses a commutator? -
CORRECT ANSWER>>Dynamo
Motors and generators operate on what principle? - CORRECT
ANSWER>>Electromagnetism
What characteristic describes how fast shaft rotates and is measured in RPM/RPS? -
CORRECT ANSWER>>Speed
What characteristic is a twisting force that causes shaft to rotate? - CORRECT
ANSWER>>Torque
How is torque calculated in generators? - CORRECT ANSWER>>Force X Distance from
center of shaft
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Download ATT TEST 11 EXAM LATEST 2025 100 QUESTIONS AND VERIFIED ANSWERS ALREADY GRADED A. and more Exams Physics in PDF only on Docsity!

ATT TEST 11 EXAM LATEST 2025 100 QUESTIONS AND

VERIFIED ANSWERS ALREADY GRADED A.

What are two types of controllers used by DC motors? - CORRECT ANSWER>>Amplitude and Time control What are 3 types of AC motors? - CORRECT ANSWER>>Universal, induction, synchronous Which AC motor is used for large HP or special applications? - CORRECT ANSWER>>Synchronous hat is a motor - CORRECT ANSWER>>a device that converts electrical energy into mechanical energy What is a generator - CORRECT ANSWER>>a device that converts mechanical energy into electrical energy What is an incremental motor - CORRECT ANSWER>>a motor whose shaft rotates a specific distance in degrees What is a continuous motor - CORRECT ANSWER>>one whose shaft continuously rotates without interruption when input is applied What type of generator produces DC volts and uses a commutator? - CORRECT ANSWER>>Dynamo Motors and generators operate on what principle? - CORRECT ANSWER>>Electromagnetism What characteristic describes how fast shaft rotates and is measured in RPM/RPS? - CORRECT ANSWER>>Speed What characteristic is a twisting force that causes shaft to rotate? - CORRECT ANSWER>>Torque How is torque calculated in generators? - CORRECT ANSWER>>Force X Distance from center of shaft

How are torque and speed related? - CORRECT ANSWER>>Inversely proportional What characteristic is a generated voltage that OPPOSES applied volts? - CORRECT ANSWER>>Couterelectromotive Force (CEMF) How is CEMF produced? - CORRECT ANSWER>>By the rotation of motors shaft How is CEMF related to speed and torque? - CORRECT ANSWER>>CEMF is proportional to speed and inversely proportional to torque What are loads? - CORRECT ANSWER>>items that require motion and are driven by rotating shaft (motors) and electrical circuits that require power (generators) How are loads related to speed? - CORRECT ANSWER>>Inversely proportional What characteristic is the amount of work accomplished? - CORRECT ANSWER>>power How is power calculated in motors? - CORRECT ANSWER>>torque X RPM X K How is power measured? - CORRECT ANSWER>>Watts and HP How is power related to load and speed? - CORRECT ANSWER>>Proportional to load and inversely proportional to speed When is torque greatest? - CORRECT ANSWER>>When RPM is 0 (locked motor) How much CEMF is generated in locked motor condition? - CORRECT ANSWER>>None What is the definition of one horsepower? - CORRECT ANSWER>>Power needed to lift 550 lbs 1 foot in one second or (33000 lbs in one minute) What principle of magnetism do motors operate on? - CORRECT ANSWER>>Attraction/repulsion What are basic parts of a motor? - CORRECT ANSWER>>Stator, armature (rotor), brushes, commutator, shaft At what points are max flux lines cut and peak volts produced? - CORRECT ANSWER>>When

What is used to measure motion? - CORRECT ANSWER>>velocity How are acceleration and deceleration calculated? - CORRECT ANSWER>>change in velocity divided by change in time Acceleration and deceleration are both changes in what? - CORRECT ANSWER>>Velocity Constant and changing velocity both equal what type of motion? - CORRECT ANSWER>>Linear motion What are two main factors of circular motion? - CORRECT ANSWER>>Rotational motion and runout What is runout? - CORRECT ANSWER>>distance traveled from point on circumference in given time period What is a measure of velocity of rotating point - CORRECT ANSWER>>Runout How is runout rate (ROR) calculated? - CORRECT ANSWER>>RPM X 2PIR (circumference) How is total runout distance calculated? - CORRECT ANSWER>>ROR X T Circular motion of point A will cause _____ motion of plate A - CORRECT ANSWER>>Linear Linear motion is equal to circular motion in terms of what? - CORRECT ANSWER>>Velocity, acceleration, distance Fixed RPM causes varying ROR and ROD depending on what? - CORRECT ANSWER>>Circumference In circular motion, V out is proportional to what? - CORRECT ANSWER>>Acceleration What are 3 popular motion sensors? - CORRECT ANSWER>>Photo interrupter, photo reflector, magnetic pickup What do position generators do? - CORRECT ANSWER>>cause a change in position, use electrical input to produce mechanical output

What do position sensors do? - CORRECT ANSWER>>detect changes in position, use mechanical input to produce an electrical output Which position device rotates from one position to another according to digital/analog input? - CORRECT ANSWER>>Position generators Which position device receives mechanical input and produces analog/digital signal output? - CORRECT ANSWER>>Position sensor Define position - CORRECT ANSWER>>location of object, defined in 1, 2, or 3 dimensions in respect to reference Torque and RPM depend on the _____ of the shaft - CORRECT ANSWER>>Radius What constant is used in power calculations when HP need to be converted to FT-LBS?

  • CORRECT ANSWER>>9.55 (Torque X RPM)/9. What constant is used in power calculations when HP need to be converted to ft-lbs? - CORRECT ANSWER>>5252.5 (Torque X RPM)/5252. What are two types of resolvers? - CORRECT ANSWER>>Induction and resistance Resolvers use what type of motion? - CORRECT ANSWER>>Circular An induction resolver acts like which component? - CORRECT ANSWER>>Transformer Resistance resolvers are specifically designed _____? - CORRECT ANSWER>>Potentiometers What are two types of digital position sensors? - CORRECT ANSWER>>Increment and wheel The shaft of which digital position sensor must return to 0 prior to each move - CORRECT ANSWER>>Increment wheel Which digital position sensor would have 4 sensors? - CORRECT ANSWER>>Encoder wheel (gray or 8421)

Rotor is secondary AC induction motor has _____ start torque - CORRECT ANSWER>>SMALL What is the purpose of synchros? - CORRECT ANSWER>>To transfer angular information as voltage Define synchros - CORRECT ANSWER>>rotary electromechanical position sensing devices, movement of one device produces voltage that causes movement in another device What are two main parts of synchro? - CORRECT ANSWER>>Stator and rotor How many stators does synchro use? - CORRECT ANSWER>>3 windings in Y config What does TX stand for? - CORRECT ANSWER>>Torque transmitter What does TDX stand for? - CORRECT ANSWER>>Torque differential transmitter What does the torque receiver do? - CORRECT ANSWER>>Electronically forced to reposition in response to applied voltage (from transmitter), provides mechanical motion What control component is similar to torque receiver? - CORRECT ANSWER>>Control transformer What are 4 steps of troubleshooting synchro systems? - CORRECT ANSWER>>Confirm symptom, remove power, isolate components, locate defect What is a multimeter used to measure when troubleshooting synchros? - CORRECT ANSWER>>Ohms What fault will cause blown fuses or tripped circuit breaker? - CORRECT ANSWER>>Short rotor What fault causes transmitter to have little effect, receivers attempt to track, and low torque? - CORRECT ANSWER>>Open rotor An open in transmitter rotor will affect one device or whole system? - CORRECT ANSWER>>Whole system

What fault causes all devices to point toward good stator axis? - CORRECT ANSWER>>Short stator A short stator in receiver will affect one device or whole system? - CORRECT ANSWER>>Whole system Define gyroscope? - CORRECT ANSWER>>mechanical device containing spinning mass that is universally mounted What gyroscope principle causes wheel to remain in fixed position if no force is applied?

  • CORRECT ANSWER>>Rigidity What principle of gyroscopes causes spin axis to turn at right angle to angle of applied force? - CORRECT ANSWER>>Precession What factors affect rigidity? - CORRECT ANSWER>>Rotor weight and speed, and rotor shape (weight distribution) Larger diameter of rotor equals (more/less) rigidity? - CORRECT ANSWER>>More Rate of precession is proportional to what? - CORRECT ANSWER>>Applied force