ATT TEST 10 EXAM LATEST 2024 ACTUAL EXAM 200 QUESTIONS AND CORRECT DETAILED ANSWERS
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
,ATT TEST 10 EXAM LATEST 2024 ACTUAL EXAM 200 QUESTIONS AND CORRECT DETAILED ANSWERS
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
, ATT TEST 10 EXAM LATEST 2024 ACTUAL EXAM 200 QUESTIONS AND CORRECT DETAILED ANSWERS
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
What is motor efficiency? - (answer) Ratio of output power to input power.
If a motor is supplied 2500 watts of electrical energy, how much horsepower would it supply? -
(answer) 3.35 hp
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
,ATT TEST 10 EXAM LATEST 2024 ACTUAL EXAM 200 QUESTIONS AND CORRECT DETAILED ANSWERS
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
, ATT TEST 10 EXAM LATEST 2024 ACTUAL EXAM 200 QUESTIONS AND CORRECT DETAILED ANSWERS
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
What is motor efficiency? - (answer) Ratio of output power to input power.
If a motor is supplied 2500 watts of electrical energy, how much horsepower would it supply? -
(answer) 3.35 hp
