Quantities and Units Questions and Answers
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
11. Which of the following is expressed in engineering notation?
- 470 × 105
- 82 × 10–2
- 9.1 × 10–6
- 14.7 × 108
13. Add 21 mA and 8000 mu.gifA and express the result in milliamperes.
- 21.8 mA
- 218 mA
- 29 mA
- 290 mA
14. Pico is what relation to micro?
- one-tenth
- one-hundredth
- one-thousandth
- one-millionth
16. Subtracting 18 × 102 from 480 × 101 results in 30 × 102.
- TRUE
- FALSE
18. Voltage, not current, determines the severity of an electrical shock.
- TRUE
- FALSE
19. Precision refers to the difference between the measured value and the accepted value.
- TRUE
- FALSE