An Amplifier Draws 1

question 27

Multiple Choice

An amplifier draws 1.8 W from its dc power supply and delivers 250 mW to its load. What is the efficiency of the amplifier?

• A) 45%
• B) 13.9%
• C) 87.8%
• D) 12.2%

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Definitions:

Class

A set or category of things having some property or attribute in common and differentiated from others by kind, type, or quality.

Blood Pressure

The force exerted by circulating blood on the walls of the body's arteries, typically measured in millimeters of mercury (mmHg).

Conditional Distribution

The distribution of a random variable subject to the fulfillment of a certain condition or set of conditions.

Age Group

A range of ages into which individuals are categorized for analysis or reporting purposes, often used in demographics and marketing.