Electrical - Module 12 - Electrical Test Equipment

Why do meters today use digital components rather than analog meters?

• Analog meters are more durable
• Easier to read, have no moving parts

• Analog meters are easier to read
• Analog meters are more cost-effective

In what type of application is it more of an advantage to use an analog meter? (mark all that apply)

• Applications with digital output signals
• testing unique systems, systems operating at less than 50V

• Applications with high accuracy requirements
• Applications requiring discrete data readings
• when determining transformer polarity or where a fast response is needed

What does a voltmeter test?

• Resistance in a circuit
• Voltage difference between two points in an electrical circuit or electromotive force

• Current flow in a circuit
• Temperature of a circuit component

When do you use a voltage tester?

• If it is energized and the general range of voltage (120, 240, or 480V)

• To determine the weight of an object
• To check the water pressure in a pipe
• To measure temperature in a room

Before you use a voltage tester, you need to make sure it is operating correctly. What should you do to ensure it is working?

• Test it on a known live circuit or use a voltage source to verify it detects voltage.
• Submerge it in water
• Use it without batteries
• Test it on a dead circuit

Examples of times when you would use a voltage tester?

• Checking if a circuit is live, testing batteries, troubleshooting electrical issues
• Assessing heart rate, gauging distance, evaluating cooking time
• Determining humidity levels, inspecting plumbing systems, monitoring internet speed
• Measuring temperature, testing air quality, checking tire pressure

When do you use a proving unit? (mark those that apply)

• For live-dead-live tests as a safe known energized

• To walk the dog
• To check the weather forecast
• To verify the functionality and accuracy of a voltage tester.

What does an ohmmeter measure?

• Voltage
• Current
• Power
• Resistance of a circuit or component

Why do you connect the test leads together before measuring the resistance of an unknown resistor?

• To calibrate the multimeter
• To ensure the multimeter is functioning properly and to zero out any resistance in the leads.
• To create a short circuit and test the fuse
• To measure the voltage across the leads

If you are using a digital ohmmeter with an audible tone, what are you most like performing?

• Voltage measurement
• Resistance measurement
• Capacitance measurement
• Continuity test to determine if a circuit is complete