ATT TEST 10 ACTUAL EXAM 1 WITH
PRACTICE QUESTIONS AND CORRECT
ANSWERS | ALREADY GRADED A+
|GUARANTEED A+ | ATT TEST 10 EXAM
LATEST VERSION [BRAND NEW!!]
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 is the primary difference between a DC motor and a 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
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
What principle of magnetism allows a generator to power its 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
PRACTICE QUESTIONS AND CORRECT
ANSWERS | ALREADY GRADED A+
|GUARANTEED A+ | ATT TEST 10 EXAM
LATEST VERSION [BRAND NEW!!]
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 is the primary difference between a DC motor and a 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
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
What principle of magnetism allows a generator to power its 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
