ATT TEST 10 EXAM LATEST 2024 ACTUAL EXAM 200
QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES (VERIFIED ANSWERS) |ALREADY
GRADED A
This schematic represents what type of rotating machine? - answer-Separately excited DC generator
How is a pulsating DC output eliminated in DC generators? - answer-Using a multiple-loop armature
What part of a motor allows reversing the magnetic poles in the rotor? - answer-Commutator and
brushes
What principle of magnetism allows a generator to power its own stator windings and still generate an
output voltage? - answer-Retentivity
In a generator, when the armature rotation is parallel to the stator magnetic field, what is the output
voltage? - answer-zero
In the motor's voltage source circuit, what is the purpose of IC1? - answer-Voltage regulator
In the motor's voltage source circuit, what is the purpose of R8? - answer-Manual speed control
In the automatic speed control circuit, what happens to the frequency output of ISO1 if the load on M2
increases? - answer-decrease
In the automatic speed control circuit, what happens to the output of U2 if the load on M2 decreases? -
answer-increase
During troubleshooting of a motor-generator set, if the set is not rotating, what is the probable faulted
area? - answer-Motor and motor circuits
,What principle of magnetism allows the use of electromagnet stators? - answer-Passing a current
through a conductor produces a magnet
This schematic represents what type of rotating machine? - answer-Series DC motor
What principle of magnetism do motors operate on? - answer-Attraction and repulsion
In the motor's voltage source circuit, what is the purpose of U1? - answer-Difference amplifier
In a motor, it is important to know that the starting current _______ - answer-is higher than the running
current.
What principle of magnetism do generators operate on? - answer-Passing a conductor through a
magnetic field produces voltage
How do you troubleshoot an automatic speed control circuit in a motor-generator set? - answer-Signal
tracing circuits
What is the primary difference between a DC motor and DC generator? - answer-The power source to
the rotor is replaced in a generator with a load.
In U1, if the non-inverting input voltage remains constant and the inverting input voltage increases,
what happens to the output voltage? - answer-Decreases
What principle of magnetism allows the use of electromagnet stators? - answer-Passing a current
through a conductor produces a magnet
What level of voltage is produced in an AC generator when the armature movement is parallel to the
stator field? - answer-None
In the revolving-field generator, there are no sliding contacts in the _______ - answer-AC output circuit.
, In a Delta connected alternator, the line voltage equals the _______ - answer-phase voltage
In three-phase alternators, the windings are connected in either a Wye or _______ configuration. -
answer-Delta
An AC generator is also known as a/an _______ - answer-alternator.
The principle of _______ is used for all motors and generators - answer-magnetism
In a Wye connected alternator, the line voltage is equal to _______ - answer-phase voltage x 1.73
In balanced Wye loads, all the resistors are _______ - answer-equal
A single-phase alternator physically resembles a _______ - answer-single-phase AC motor
In an AC generator, the output voltage across the load in the external circuit reverses polarity with every
_______ of rotation. - answer-180°
CEMF opposes the _______ - answer-original conductor magnetic field. applied
voltage.
Which of the following best describes torque? - answer-Twisting action
Speed and torque are _______ - answer-inversely proportional.
One horsepower is the power rate corresponding to _______ - answer-33,000 ft·lb/min.
What are the two basic components of a motor? - answer-Poles and armature
QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES (VERIFIED ANSWERS) |ALREADY
GRADED A
This schematic represents what type of rotating machine? - answer-Separately excited DC generator
How is a pulsating DC output eliminated in DC generators? - answer-Using a multiple-loop armature
What part of a motor allows reversing the magnetic poles in the rotor? - answer-Commutator and
brushes
What principle of magnetism allows a generator to power its own stator windings and still generate an
output voltage? - answer-Retentivity
In a generator, when the armature rotation is parallel to the stator magnetic field, what is the output
voltage? - answer-zero
In the motor's voltage source circuit, what is the purpose of IC1? - answer-Voltage regulator
In the motor's voltage source circuit, what is the purpose of R8? - answer-Manual speed control
In the automatic speed control circuit, what happens to the frequency output of ISO1 if the load on M2
increases? - answer-decrease
In the automatic speed control circuit, what happens to the output of U2 if the load on M2 decreases? -
answer-increase
During troubleshooting of a motor-generator set, if the set is not rotating, what is the probable faulted
area? - answer-Motor and motor circuits
,What principle of magnetism allows the use of electromagnet stators? - answer-Passing a current
through a conductor produces a magnet
This schematic represents what type of rotating machine? - answer-Series DC motor
What principle of magnetism do motors operate on? - answer-Attraction and repulsion
In the motor's voltage source circuit, what is the purpose of U1? - answer-Difference amplifier
In a motor, it is important to know that the starting current _______ - answer-is higher than the running
current.
What principle of magnetism do generators operate on? - answer-Passing a conductor through a
magnetic field produces voltage
How do you troubleshoot an automatic speed control circuit in a motor-generator set? - answer-Signal
tracing circuits
What is the primary difference between a DC motor and DC generator? - answer-The power source to
the rotor is replaced in a generator with a load.
In U1, if the non-inverting input voltage remains constant and the inverting input voltage increases,
what happens to the output voltage? - answer-Decreases
What principle of magnetism allows the use of electromagnet stators? - answer-Passing a current
through a conductor produces a magnet
What level of voltage is produced in an AC generator when the armature movement is parallel to the
stator field? - answer-None
In the revolving-field generator, there are no sliding contacts in the _______ - answer-AC output circuit.
, In a Delta connected alternator, the line voltage equals the _______ - answer-phase voltage
In three-phase alternators, the windings are connected in either a Wye or _______ configuration. -
answer-Delta
An AC generator is also known as a/an _______ - answer-alternator.
The principle of _______ is used for all motors and generators - answer-magnetism
In a Wye connected alternator, the line voltage is equal to _______ - answer-phase voltage x 1.73
In balanced Wye loads, all the resistors are _______ - answer-equal
A single-phase alternator physically resembles a _______ - answer-single-phase AC motor
In an AC generator, the output voltage across the load in the external circuit reverses polarity with every
_______ of rotation. - answer-180°
CEMF opposes the _______ - answer-original conductor magnetic field. applied
voltage.
Which of the following best describes torque? - answer-Twisting action
Speed and torque are _______ - answer-inversely proportional.
One horsepower is the power rate corresponding to _______ - answer-33,000 ft·lb/min.
What are the two basic components of a motor? - answer-Poles and armature
