# Electronics - Quantities and Units

### Exercise :: Quantities and Units - General Questions

11.

The number 14.8 can also be expressed as

 A. 1.48 × 10–1 B. 1.48 × 100 C. 1.48 × 101 D. 1.48 × 102

Answer: Option C

Explanation:

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12.

The digits in a measured number that are known to be correct are called

 A. accuracy digits B. significant digits C. error digits D. precision digits

Answer: Option B

Explanation:

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13.

Which of the following is expressed in engineering notation?

 A. 470 × 105 B. 82 × 10–2 C. 9.1 × 10–6 D. 14.7 × 108

Answer: Option C

Explanation:

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14.

The unit for frequency is the

 A. hertz B. ampere C. watt D. second

Answer: Option A

Explanation:

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15.

Add 21 mA and 8000 A and express the result in milliamperes.

 A. 21.8 mA B. 218 mA C. 29 mA D. 290 mA

Answer: Option C

Explanation:

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