For a D.C. shunt motor if the excitation is changed?

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Answer :

For a D.C. shunt motor if the excitation is changed torque will change but power will remain constant.

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Sparking, is discouraged in a D.C. motor because?

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Which D.C. motor will be suitable along with flywheel for intermittent light and heavy loads?

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Which D.C. motor has got maximum self loading property?

Last Answer : Differentially compounded D.C. motor has got maximum self loading property.

The current drawn by the armature of D.C. motor is directly proportional to?

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In a D.C. series motor, if the armature current is reduced by 50%, the torque of the motor will be equal to?

Last Answer : In a D.C. series motor, if the armature current is reduced by 50%, the torque of the motor will be equal to 25% of the previous value.

The speed of a D.C. series motor is?

Last Answer : The speed of a D.C. series motor is inversely proportional to the armature current.