A Synchronous Motor Connected to Infinite Bus-Bars Has at Constant

question 16

Multiple Choice

A synchronous motor connected to infinite bus-bars has at constant full load, 100% excitation and unity power factor. On changing the excitation only, the armature current will have

• A)no change of power factor
• B)lagging power factor with over-excitation
• C)leading power factor with under-excitation
• D)leading power factor with over-excitation

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Definitions:

Price Floor

A government-imposed minimum price set above the equilibrium price, intended to ensure fair conditions for producers.

Minimum Price

A price floor set by the government or a body, below which the product cannot be sold, aimed at protecting producers or farmers.

Government

is the system or group of people governing an organized community, often a state, which creates and enforces laws, regulates economic and social policies, and provides public services.

Price Ceiling

A government-imposed limit on how high a price can be charged for a product, service, or resource, intended to prevent prices from reaching levels thought to be unfair or unaffordable.