Motor Controls test 2 Exam Questions
and Answers
Motors operate on the principle that when ________ -carrying conductor is placed in a
magnetic field, a force that tends to move the conductor out of the field is exerted on the
conductor. - correct answer-Current
The electron flow motor rule states that the _______ points in the direction of the
electron current flow in the conductor. - correct answer-Middle finger
The intensity of the magnetic field in the amount of current in a conductor are normally
change to increase the____on the conductor. - correct answer-Force
A DC motor consist of_____winding, an armature, a commutator, and brushes. - correct
answer-Field
A commutator connects each armature winding to the brushes using____bars that are
insulated from each other with pieces of mica. - correct answer-Copper
A spring place behind the brush forces the brush to make contact with the____. -
correct answer-Commutator
A commutator rotates in____° increments. - correct answer-180
DC motors require more maintenance than AC motors because they have____that
wear. - correct answer-Brushes
____Is exerted on an armature when it is positioned so that the plane of the armature
loop is parallel to the field, and the armature loop sides are at right angles to the
magnetic field. - correct answer-Torque
A DC series motor is a DC motor that has the series field connected in series with
the_____. - correct answer-Brushes
The____that is produced by motor depends on the strength of the magnetic field in the
motor. - correct answer-Torque
A DC_____motor should always be connected directly to the load and not through belts,
chains, etc. - correct answer-Series
and Answers
Motors operate on the principle that when ________ -carrying conductor is placed in a
magnetic field, a force that tends to move the conductor out of the field is exerted on the
conductor. - correct answer-Current
The electron flow motor rule states that the _______ points in the direction of the
electron current flow in the conductor. - correct answer-Middle finger
The intensity of the magnetic field in the amount of current in a conductor are normally
change to increase the____on the conductor. - correct answer-Force
A DC motor consist of_____winding, an armature, a commutator, and brushes. - correct
answer-Field
A commutator connects each armature winding to the brushes using____bars that are
insulated from each other with pieces of mica. - correct answer-Copper
A spring place behind the brush forces the brush to make contact with the____. -
correct answer-Commutator
A commutator rotates in____° increments. - correct answer-180
DC motors require more maintenance than AC motors because they have____that
wear. - correct answer-Brushes
____Is exerted on an armature when it is positioned so that the plane of the armature
loop is parallel to the field, and the armature loop sides are at right angles to the
magnetic field. - correct answer-Torque
A DC series motor is a DC motor that has the series field connected in series with
the_____. - correct answer-Brushes
The____that is produced by motor depends on the strength of the magnetic field in the
motor. - correct answer-Torque
A DC_____motor should always be connected directly to the load and not through belts,
chains, etc. - correct answer-Series
