Quantities and Units Questions and Answers

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Understanding Quantities and Units is a fundamental concept in Electronics and Electrical Engineering. In many aptitude questions and answers for competitive exams like GATE, ISRO, DRDO, and PSU recruitments, this topic frequently appears to test your grasp of measurement systems, SI units, and conversions. Mastering these basics helps you analyze circuits, interpret instrument readings, and solve engineering problems accurately. This collection of Quantities and Units questions with answers is designed to strengthen your foundation with clear explanations and practical examples. Students preparing for aptitude test practice online or offline can use these solved problems to enhance accuracy and speed. Download PDFs or practice online to boost your exam readiness and confidence.

Quantities and Units

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21. Multiplying 5 × 106 by 4 × 103 results in 20 × 1018.

  • TRUE
  • FALSE
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22. The metric prefix giga is used to represent one billion.

  • TRUE
  • FALSE
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23. The number 24.5, rounded to two significant digits, is 25.

  • TRUE
  • FALSE
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