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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Definitions:

Internal Causes

Reasons or motivations stemming from within an individual, such as personal preferences, values, or beliefs, that influence their behavior.

External Causes

Factors outside an individual's control that can influence events or outcomes.

Mutual Mistake

A situation in a contract where all parties involved have a shared misunderstanding regarding a fundamental fact or aspect of the agreement.

Unilateral Mistake

A mistake made by only one party in a contract, which may not always void the contract.