Which extra test is commonly available on more advanced digital multimeters?

Which extra test is commonly available on more advanced digital multimeters?

• A. Continuity test
• B. Infrared scan
• C. Vibration test
• D. Helium leak test

Answer: (A)

Continuity testing is the extra capability you commonly find on more advanced digital multimeters. It’s a quick way to check if there’s a low-resistance path between two points, indicating a complete circuit. The meter usually applies a small current and, if continuity exists, sounds an audible beep. This makes it easy to spot broken wires, open circuits, or faulty connections without needing to measure exact resistance values. Infrared scanning is a thermal-imaging concept, not a standard DMM feature, and vibration or helium leak testing are specialized procedures outside the typical scope of handheld meters.

Continuity testing is the extra capability you commonly find on more advanced digital multimeters. It’s a quick way to check if there’s a low-resistance path between two points, indicating a complete circuit. The meter usually applies a small current and, if continuity exists, sounds an audible beep. This makes it easy to spot broken wires, open circuits, or faulty connections without needing to measure exact resistance values.

Infrared scanning is a thermal-imaging concept, not a standard DMM feature, and vibration or helium leak testing are specialized procedures outside the typical scope of handheld meters.