Discussion
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- Question
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
- Correct Answer
- significant digits
- 1. 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
- 2. 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
- 3. 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
- 4. A measure of the repeatability of a measurement of some quantity is
Options- A. error
- B. precision
- C. accuracy
- D. significant Discuss
- 5. Which of the following is expressed in engineering notation?
Options- A. 470 × 105
- B. 82 × 10?2
- C. 9.1 × 10?6
- D. 14.7 × 108 Discuss
- 6. Which of the following metric prefixes could replace 10?9?
Options- A. Nano
- B. Mega
- C. Kilo
- D. Micro Discuss
- 7. 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 Discuss
- 8. 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
- 9. 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
- 10. Derived units are obtained from various combinations of
Options- A. electrical quantities
- B. fundamental units
- C. metric prefixes
- D. international standards Discuss
Quantities and Units problems
Search Results
Correct Answer: All of the above
Correct Answer: 1.48 × 101
Correct Answer: "precision" measures the repeatability of a measurement
Correct Answer: precision
Correct Answer: 9.1 × 10?6
Correct Answer: Nano
Correct Answer: 1.165 × 105
Correct Answer: 7.2 V
Correct Answer: All of the above
Correct Answer: fundamental units
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