To Demonstrate a Sampling Method, the Instructor in a Class

question 127

Multiple Choice

To demonstrate a sampling method, the instructor in a class picked the first five students sitting in the last row of the class. This is an example of a

• A) systematic sample.
• B) simple random sample.
• C) stratified sample.
• D) convenience sample.

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Definitions:

Shunt Field

A winding in electrical generators or motors that is connected parallel to the armature, influencing the magnetic field.

Armature

The rotating part of an electric machine, such as a motor or generator, within which voltage is induced by magnetic action.

Magnetic Field

A region around a magnetic material or a moving electric charge within which the force of magnetism acts.

DC Machine

An electrical machine that operates on direct current (DC) and includes both motors and generators.