Which of the Following Is NOT Recognized as an Advantage

question 43

Multiple Choice

Which of the following is NOT recognized as an advantage of using mail interviews to collect research data?

• A) no interviewer bias
• B) good control of environment
• C) low social desirability
• D) low/moderate cost
• E) no field force problems

---

Definitions:

Negative-Sequence Harmonic

Causes the rotating magnetic field of a polyphase motor to rotate in a direction opposite that of the fundamental frequency.

Fundamental Frequency

The lowest frequency of a periodic waveform, representing the greatest common divisor of the frequencies of all components of the waveform.

Odd Multiples

Refers to numbers or values that are not divisible by two and are multiples of a given number, often appearing in patterns or sequences.

Third Harmonic

A harmonic that is three times the frequency of the fundamental frequency, often causing distortion in power systems.