If the field of a D.C. shunt motor gets opened while motor is running?

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1 Answer

Answer :

If the field of a D.C. shunt motor gets opened while motor is running the motor will attain dangerously high speed.

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If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens?

Last Answer : If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens this will make armature to take heavy current, possibly burning it.

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

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

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Last Answer : As the load is increased the speed of D.C. shunt motor will reduce slightly.

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The speed of a D.C. shunt motor more than its full-load speed can be obtained by?

Last Answer : The speed of a D.C. shunt motor more than its full-load speed can be obtained by decreasing the field current.

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In D.C. shunt motors as load is reduced?

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In a differentially compounded D.C. motor, if shunt field suddenly opens?

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If a D.C. shunt motor is working at no load and if shunt field circuit suddenly opens?

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The purpose of retardation test on D.C. shunt machines is to find out?

Last Answer : The purpose of retardation test on D.C. shunt machines is to find out stray losses.

D.C. shunt motors are used for driving?

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Describe the reason of using dc series motor for electric trains.

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The condition for maximum power in case of D.C. motor is?

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Sparking at the commutator of a D.C. motor may result in?

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

Last Answer : Cumulatively compounded D.C. motor will be suitable along with flywheel for intermittent light and heavy loads.

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?

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