Kumar - C7 - D.C. Motors at University Of Batangas | Flashcards & Summaries

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# Lernmaterialien für Kumar - C7 - D.C. Motors an der University of Batangas

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56) As the load is increased, the speed of the shunt motor

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remains constant

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2) The rotating part of a dc motor is known as

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pole

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49) For which of the following dc motors is the typical field of application mentioned?

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Shunt motor : electric trains

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7) The speed of a dc motor is

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Directly proportional to back emf and inversely proportional to flux

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5) Voltage equation for dc motor is

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V = Eb + IaRa

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3) The function of the commutator in dc machine is

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To change alternating current to direct current

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4) Carbon brushes are used in electric motors to

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Brush off carbon deposits on the commutator

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13) If speed of a dc shunt motor increases, the back emf

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TESTE DEIN WISSEN

increases

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8) The highest speed attained by a dc shunt motor is

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equal to infinity of rated flux

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12) The speed of a dc shunt motor is required to be more than F.L. speed. This is possible by

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TESTE DEIN WISSEN

increasing the armature current

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11) An external resistance is added in the series with the field of a dc shunt motor. When the motor runs, the effect of resistance is

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TESTE DEIN WISSEN

to reduce the speed of the motor

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9) In a dc motor iron losses occur in

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TESTE DEIN WISSEN

the yoke

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## Beispielhafte Karteikarten für deinen Kumar - C7 - D.C. Motors Kurs an der University of Batangas - von Kommilitonen auf StudySmarter erstellt!

Q:

56) As the load is increased, the speed of the shunt motor

A:

remains constant

Q:

2) The rotating part of a dc motor is known as

A:

pole

Q:

49) For which of the following dc motors is the typical field of application mentioned?

A:

Shunt motor : electric trains

Q:

7) The speed of a dc motor is

A:

Directly proportional to back emf and inversely proportional to flux

Q:

5) Voltage equation for dc motor is

A:

V = Eb + IaRa

Q:

3) The function of the commutator in dc machine is

A:

To change alternating current to direct current

Q:

4) Carbon brushes are used in electric motors to

A:

Brush off carbon deposits on the commutator

Q:

13) If speed of a dc shunt motor increases, the back emf

A:

increases

Q:

8) The highest speed attained by a dc shunt motor is

A:

equal to infinity of rated flux

Q:

12) The speed of a dc shunt motor is required to be more than F.L. speed. This is possible by

A:

increasing the armature current

Q:

11) An external resistance is added in the series with the field of a dc shunt motor. When the motor runs, the effect of resistance is

A:

to reduce the speed of the motor

Q:

9) In a dc motor iron losses occur in

A:

the yoke

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