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Q1/ Correct and incorrect and correct the error if found. 1- It is not possible to increase the speed of a shunt DC motor above rated using flux field control 2-The main disadvantage of potential divider control method of shunt DC motor, the speed up to zero is not possible. 3-The armature voltage of series DC generator is not affected by field current. 4- To solve the armature reaction Problem in large machines, this can be achieved by increasing the brush width 5-In shunt d-e generator the field winding will be constructed from high number of turns and high cross-sectional area of wire. 6-The inter pole winding is connected in parallel to field winding. 7-The produced sparks at the brushes of a de machine is due to friction losses. 8-Series DC motors are used for low torque applications. 9-In series DC generator, Increasing the load current will decrease the magnitude of the generated voltage. 10-The compensation windings are place at the pole face and used to mitigate the effect of the armature reaction.

Q1/ Correct and incorrect and correct the error if found. 1- It is not possible to increase the speed of a shunt DC motor above rated using flux field control 2-The main disadvantage of potential divider control method of shunt DC motor, the speed up to zero is not possible. 3-The armature voltage of series DC generator is not affected by field current. 4- To solve the armature reaction Problem in large machines, this can be achieved by increasing the brush width 5-In shunt d-e generator the field winding will be constructed from high number of turns and high cross-sectional area of wire. 6-The inter pole winding is connected in parallel to field winding. 7-The produced sparks at the brushes of a de machine is due to friction losses. 8-Series DC motors are used for low torque applications. 9-In series DC generator, Increasing the load current will decrease the magnitude of the generated voltage. 10-The compensation windings are place at the pole face and used to mitigate the effect of the armature reaction.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Q1/ Correct and incorrect and correct the error if found. 1- It is not possible to increase the speed of a shunt DC motor above rated using flux field control 2-The main disadvantage of potential divider control method of shunt DC motor, the speed up to zero is not possible. 3-The armature voltage of series DC generator is not affected by field current. 4- To solve the armature reaction Problem in large machines, this can be achieved by increasing the brush width 5-In shunt d-e generator the field winding will be constructed from high number of turns and high cross-sectional area of wire. 6-The inter pole winding is connected in parallel to field winding. 7-The produced sparks at the brushes of a de machine is due to friction losses. 8-Series DC motors are used for low torque applications. 9- In series DC generator, Increasing the load current will decrease the magnitude of the generated voltage. 10-The compensation windings are place at the pole face and used to mitigate the effect of the armature reaction.
Transcribed Image Text:Q1/ Correct and incorrect and correct the error if found. 1- It is not possible to increase the speed of a shunt DC motor above rated using flux field control 2-The main disadvantage of potential divider control method of shunt DC motor, the speed up to zero is not possible. 3-The armature voltage of series DC generator is not affected by field current. 4- To solve the armature reaction Problem in large machines, this can be achieved by increasing the brush width 5-In shunt d-e generator the field winding will be constructed from high number of turns and high cross-sectional area of wire. 6-The inter pole winding is connected in parallel to field winding. 7-The produced sparks at the brushes of a de machine is due to friction losses. 8-Series DC motors are used for low torque applications. 9- In series DC generator, Increasing the load current will decrease the magnitude of the generated voltage. 10-The compensation windings are place at the pole face and used to mitigate the effect of the armature reaction.
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