Digital Tester Measurement Concepts

The video tutorial provides a comprehensive guide on using a digital tester, focusing on its functions for measuring AC and DC voltage, current, and resistance. It highlights the importance of understanding the tester's scales and the potential risks of using it as an ammeter. Practical examples are given to demonstrate proper measurement techniques, emphasizing safety and accuracy.

What are the two types of voltages that a digital tester can measure?

• AC and DC voltages

• High and low voltages

• Positive and negative voltages

• Static and dynamic voltages

Why is it not recommended to use the digital tester as an ammeter?

• It can only measure AC current

• The cables may not handle high current

• It is not accurate enough

• It is too expensive

What is a safer alternative to using a digital tester as an ammeter?

• A frequency meter

• A clamp meter

• A voltmeter

• A resistance meter

Which scale on the digital tester is used for measuring resistance up to 2000 ohms?

• 200 ohms

• 2000 ohms

• 20k ohms

• 200k ohms

What should you do if the tester shows '1' on the left when measuring resistance?

• Increase the scale

• Check the connections

• Change the battery

• Decrease the scale

How should the tester be connected to measure voltage?

• In series with the circuit

• Across a resistor

• In parallel with the circuit

• Directly to the power source

What does it mean if the tester shows '000' when measuring voltage?

• The voltage is too high

• The voltage is too low

• The tester is malfunctioning

• There is no voltage

What is the significance of the '1' on the left side of the tester's display?

• The measurement is out of range

• The battery is low

• The measurement is within range

• The tester is off

What should you do if the tester shows '000' when measuring resistance?

• Check the connections

• Replace the tester

• Increase the scale

• Decrease the scale

What is the first step in measuring resistance with a digital tester?

• Ensure the circuit is de-energized

• Check the battery

• Set the scale to 200 ohms

• Connect the tester in series