Transmitting Power at High Voltage,e

question 21

Multiple Choice

Transmitting power at high voltage,e.g. ,400,000 V,reduces the power loss for transmission lines.But such a voltage would destroy electrical devices in household use.How then can such 400,000 V electricity be used in a normal house?

• A) The ground prongs on household plugs reduce the voltage to 120 V.
• B) Before reaching households,transformers are used to reduce the voltage appropriately.
• C) No matter the incoming voltage,a 120-V device only lets 120 V in.
• D) The 400,000 V is just theoretical;long distance transmission lines actually use 120 V.

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Definitions:

Absorption Costing

A costing method that includes all manufacturing costs — direct materials, direct labor, and both variable and fixed manufacturing overhead — in the cost of a product.

Variable Costing

An accounting method that includes only variable manufacturing costs—direct materials, direct labor, and variable manufacturing overhead—in product costs.

Traceable Fixed Expenses

Fixed costs that can be directly linked to a specific product, service, or department.

Segment Margin

The amount of profit or loss generated by a specific segment of a business, considering only the revenues and expenses directly attributable to that segment.