Electrical FE Study Session 4

Which of the following is not recognized for intellectual property protection in the United States? Select all that apply.

• An airframe design

• Synthesized varieties of plants

• Right of publicity

• The public contents of a database

Ten vehicles were selected from a vintage sportscar catalog with the following data where x is the age of the car in years and y is the price in hundreds of dollars. Determine a linear regression equation for the price of the cars versus years.

A car dealership sold 50 units of its best selling car model at slightly different prices each time. The mean price this car model was sold was $27,500 with a standard deviation $4,352. The probability that this car model sold for $30,111 or more is most nearly:

• 18.3%

• 27.4%

• 60.0%

• 4.1%

In a semiconductor the movement of holes is due to

• electrons in the valence band

• electrons in the conduction band

• holes in the valence band

• holes in the conduction band

Consider the sensing circuit used as a thermostat that consists of a bimetallic strip of steel and brass. The brass expands more than the steel for the same rise in temperature. When the strip becomes hot, what components of the circuit will be turned on?

• Alarm bell only

• Pilot light and alarm bell

• Motor, pilot light, and alarm bell

• Motor and alarm bell

The magnetic flux density measured 1meter from a current carrying wire is 0.000333Tesla. The current in the wire is 10A. The magnetic permeability of the medium surrounding the wire is most nearly:

Select all that apply. Engineers can contribute to sustainable development by planning and building projects that:

• Preserve natural resources

• That reduce or eliminate waste and pollution

• Are cost-efficient

• Support natural environments

Complete the statement:

The electrical resistance of insulators

• Is independent of temperature

• Is fixed

• Increases with increased temperature

• Decreases with increased temperature

Your company has been awarded a new contract for geotechnical recommendations for the foundation of a proposed building. At the end of the project, the client requires for the recommendations to be stamped by a licensed professional engineer (PE). Under which scenarios are you legally allowed to provide the client with stamped engineering recommendations? Select all that apply.

• You are PE licensed and your specialty is in something else other than building foundations. You partner up with a colleague, who is an expert in building foundations but whose licensure is currently expired, to write the building foundation recommendations. You stamp his recommendations because you know he is an expert in the field, although you are not. You trust his judgment and you two work for the same company.

• You are highly knowledgeable in the topic of building foundations and you are licensed. You stamp your own recommendations.

• You are PE licensed and your specialty is in something else other than building foundations. You wrote the building foundation recommendations and a colleague who is licensed and an expert in building foundations reviewed your work. You stamped the building foundation recommendations since the project was assigned to you and the recommendations were reviewed by a licensed expert.

• You are the manager of the firm and you are currently too busy to write the engineering recommendations. You tell your subordinates to write the engineering recommendations. You are knowledgeable in building foundations. You review the recommendations written by your employees. As a licensed PE, you approve and then stamp the engineering documents.

A mass is measured multiple times and the following data is collected. Determine the arithmetic mean and standard deviation of the measurements.