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SECTION A: Electrical Measurements

1. Question 1 (a)

   • Define 'measurement' with respect to physical quantities.
   • State three basic units of measurement.

2. Question 1 (b)

   • Describe the operation of a full-wave bridge rectifier with a schematic circuit diagram.

3. Question 1 (c)

   • For a full-wave rectifier:
     • Average voltage.
     • Peak voltage.
     • RMS voltage.
     • Percentage error in the measurement.

4. Question 2 (a)

   • Define "maintainability" and "redundancy" in terms of system reliability.

5. Question 2 (b)

   • Distinguish between "random" and "partial" failures.
   • Calculate availability given operation and repair times.

6. Question 2 (c)

   • Explain series and parallel reliability configurations with block diagrams.

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