If Excitation of a Synchronous Motor Running with a Constant

question 10

Multiple Choice

If excitation of a synchronous motor running with a constant load is decreased from its normal value, ignoring effects of armature reaction, it leads to

• A)increase in both armature current and power factor angle
• B)increase in back e.m.f. but decrease in armature current
• C)increase in both armature current and power factor which is lagging
• D)increase in torque angle but decrease in back e.m.f.

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A chemical hair treatment used to add curls or waves to the hair, or the city located in the European part of Russia, known for its cultural and historical significance.

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