Q. What will happen if shunt field suddenly opens, in a differential compound DC motor?

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Q. What will happen if the series field of a differential compound motor is short circuited?

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Q. What will happen if the series field of a cumulative compound motor is short circuited?

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Q. DC motor is to a drive a load which is almost zero for certain part of the load cycle and peak value for short duration. We will select __________

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Q. With increase in armature current, speed of the cumulative compound motor _________

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Q. Speed current characteristic of cumulative DC compound motor at larger values of armature current is similar to that of _____________

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Q. Differential compound motor is used in large number of applications.

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Q. Where speed-current characteristic of DC shunt motor lies with respect to DC cumulative compound motor (assume current greater than full load current)?

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Q. Where speed-current characteristic of DC shunt motor lies with respect to DC cumulative compound motor (assume current smaller than full load current)?

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Q. Only motor listed below whose speed increases with increase in armature current is ___________

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Q. Torque of the cumulative compound DC motor is _____________

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Q. Torque-current characteristic of DC cumulative compound motor _____________

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Q. For strong series field, speed-torque characteristic of cumulative compound motor lies __________

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Q. Which of the following DC motor has negative speed regulation?

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Q. Correct equation of speed-torque characteristic of DC shunt motor is____________

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Q. Which of the following is the correct equation for DC series motor ________

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Q. Net field current in a compound motor is given by ______________

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