Discussion
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- Question
Adding 27.5 × 103 to 8.9 × 104 equals
Options- A. 36.4 × 107
- B. 116.5 × 104
- C. 28.39 × 103
- D. 1.165 × 105
- Correct Answer
- 1.165 × 105
- 1. Which of the following metric prefixes could replace 10?9?
Options- A. Nano
- B. Mega
- C. Kilo
- D. Micro Discuss
- 2. The digits in a measured number that are known to be correct are called
Options- A. accuracy digits
- B. significant digits
- C. error digits
- D. precision digits Discuss
- 3. Scientific notation is a method
Options- A. of expressing a very large number
- B. of expressing a very small number
- C. used to make calculations with large and small numbers
- D. All of the above Discuss
- 4. The number 14.8 can also be expressed as
Options- A. 1.48 × 10?1
- B. 1.48 × 100
- C. 1.48 × 101
- D. 1.48 × 102 Discuss
- 5. When using the terms "accuracy" and "precision" for measurements
Options- A. "precision" implies less measurement error than "accuracy"
- B. "accuracy" implies less measurement error than "precision"
- C. "precision" measures the repeatability of a measurement
- D. both terms mean the same thing Discuss
- 6. 7200 mV is the same as
Options- A. 7.2 µV
- B. 7.2 V
- C. 7,200,000 V
- D. 0.0072 µV Discuss
- 7. The difference between scientific and engineering notation is
Options- A. powers of ten representation
- B. single vs. multiple digits before decimal point
- C. groupings of multiples of three digits
- D. All of the above Discuss
- 8. Derived units are obtained from various combinations of
Options- A. electrical quantities
- B. fundamental units
- C. metric prefixes
- D. international standards Discuss
- 9. Add 21 mA and 8000 µA and express the result in milliamperes.
Options- A. 21.8 mA
- B. 218 mA
- C. 29 mA
- D. 290 mA Discuss
- 10. The unit for frequency is the
Options- A. hertz
- B. ampere
- C. watt
- D. second Discuss
Quantities and Units problems
Search Results
Correct Answer: Nano
Correct Answer: significant digits
Correct Answer: All of the above
Correct Answer: 1.48 × 101
Correct Answer: "precision" measures the repeatability of a measurement
Correct Answer: 7.2 V
Correct Answer: All of the above
Correct Answer: fundamental units
Correct Answer: 29 mA
Correct Answer: hertz
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