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WorksheetsMultimeter Usage
Total questions: 44
Worksheet time: 23mins
Mason, Mia, and Maya are working on a science project. They are using a multimeter and notice the symbol 'V' on the display. What does this symbol represent in their experiment?
Velocity
Vibration
Voltage
Volume
Arjun is working on a science project and he uses a multimeter. He sees the symbol 'A' on the multimeter display. What does this symbol represent in his experiment?
It represents the resistance measurement in ohms
It represents the current measurement in amperes
It represents the voltage measurement in volts
It represents the frequency measurement in hertz
David is working on a science project and he uses a multimeter. He sees the symbol 'Ω' on the multimeter display. What does this symbol represent?
Voltage
Current
Resistance
Frequency
Abigail is learning about electricity in her physics class. Her teacher, Daniel, shows the class a multimeter and points to the 'DC' symbol on its display. He asks Arjun, 'What does the 'DC' symbol on this multimeter represent?'
Direct current
Digital clock
Double capacity
Data center
Rohan, Anika, and Jackson are working on a science project involving a multimeter. They see the symbol 'AC' on the multimeter display. What does this symbol represent?
Air conditioning
Alternating current
Direct current
Analog clock
Zoe, Evelyn, and Abigail are working on a science project. They have a multimeter and notice the symbol 'V~' on its function dial. What does this symbol represent in their experiment?
It represents the measurement of resistance in their circuit
It represents the measurement of DC voltage in their circuit
It represents the measurement of AC voltage in their circuit
It represents the measurement of current in their circuit
David is working on a science project and he is using a multimeter. He sees the symbol 'V=' on the multimeter function dial. What does this symbol represent?
It represents the frequency measurement
It represents the current measurement
It represents the resistance measurement
It represents the voltage measurement
Isla, Liam, and Evelyn are working on a science project. They have a multimeter with a function dial that has a symbol 'A'. What does this symbol represent in their experiment?
It represents the current measurement in amperes
It represents the frequency measurement in hertz
It represents the resistance measurement in ohms
It represents the voltage measurement in volts
Charlotte, Anika, and Zoe are working on a science project involving a multimeter. They notice the symbol 'Ω' on the multimeter's function dial. What does this symbol represent?
Volts
Watts
Amps
Ohms
Arjun is working on a science project that involves the use of a multimeter. He sees the symbol 'mA' on the multimeter's function dial. What does this symbol represent?
Measurement of milliamperes
Measurement of millivolts
Measurement of milliohms
Measurement of millihertz
Noah and William are working on a science project involving a small circuit. They need to measure a very small voltage in their circuit. Sophia suggests they use the 'mV' function on their multimeter. What does the 'mV' symbol on a multimeter function dial represent?
Measurement of milliamperes
Measurement of millivolts
Measurement of milliohms
Measurement of millihertz
James, Avery, and Ethan are working on a science project. They have a circuit with a known resistance 'R'. They measure the voltage 'V' across the circuit. What does 'I' represent in their formula 'V = I * R'?
Voltage
Resistance
Current
Power
David is trying to calculate the voltage of a circuit. He knows the current and uses the formula 'V = I * R'. What does 'R' represent in this formula?
Resistance
Current
Voltage
Power
Daniel, Priya, and Jackson are working on a science project. They have a multimeter and Daniel notices the symbol 'V' on its function dial. What does this 'V' represent in this context?
It represents the measurement of velocity
It represents the measurement of volume
It represents the measurement of voltage
It represents the measurement of vibration
Michael is trying to calculate the power of an electrical circuit. He knows the current (I) but is unsure what 'V' represents in the formula 'P = V * I' that Sophia gave him. Can you help James tell him what 'V' stands for?
Power
Current
Voltage
Resistance
Why do meters today use digital components rather than analog meters?
Easier to read, have no moving parts
In what type of application is it more of an advantage to use an analog meter? (mark all that apply)
testing unique systems, systems operating at less than 50V
when determining transformer polarity or where a fast response is needed
What does a voltmeter test?
Voltage difference between two points in an electrical circuit or electromotive force
When do you use a voltage tester?
If it is energized and the general range of voltage (120, 240, or 480V)
Before you use a voltage tester, you need to make sure it is operating correctly. What should you do to ensure it is working?
Examples of times when you would use a voltage tester?
When do you use a proving unit? (mark those that apply)
For live-dead-live tests as a safe known energized
What does an ohmmeter measure?
Resistance of a circuit or component
Why do you connect the test leads together before measuring the resistance of an unknown resistor?
If you are using a digital ohmmeter with an audible tone, what are you most like performing?
Continuity test to determine if a circuit is complete
What does a clamp-on ammeter measure?
When would you use the "HOLD" function on a clamp-on ammeter?
When measuring in tight locations
What does a VOM capable of measuring?
Volt-ohm-milliammeter (VOM)
What does a VOM capable of measuring?
ohms, amps, and volts
When would you use a megohmmeter?
To measuring resistance of several million ohms
What type of meter is used to be plugged directly into an outlet to verify the condition of a grounded circuit?
Circuit Tester
When are irradiance meters used?
Installing and testing solar photovoltaic systems
Describe each of the Overvoltage Installation Categories:
Electronic equipment and circuity
CAT I
Single-phase loads (small appliance tools, outlets at more than 30 feet from a CAT 3 source or 60' from a CAT 4 source)
CAT II
Three-phase motors, single-phase commercial or industrial lighting, switchgear, busduct & feeders in industrial plants
CAT III
Three-phase power at meter, service-entrance or utility connection, any outdoor conductors, including signs, a pump, or exterior power generation
CAT IV
When you are selecting a meter, the danger increases the (a) to the utility power source
Certified meters are marked with the category rating on the (a) .
The meter you use must be calibrated at a minimum of (a) time per year as required by (b)
What can happen if you de-energize main supply circuits by opening supply switches?
Does not necessarily de-energize all the circuits in a given piece of equipment
What is feedback related to electricity?
Input to electrical equipment from other sources
What type of meter does not need direct contact to test voltage?
Plug-in voltage tester
Clamp-on ammeter
A digital multimeter is used to measure _____. (Select all that apply)
voltage
current
blood pressure
resistance
An electrician taking a voltage reading, wearing all the correct PPE, stands no chance of getting injured.
True
False
A temporary voltage spike in an electrical system is known as a(n) ____.
electrostatic voltage
ghost voltage
transient voltage
wasted voltage
What category multimeter can be used to check for correct voltage at the meter outside.
CAT I
CAT II
CAT III
CAT IV
UL and CSA are independent testing labs that make sure electronic equipment is in compliance with the standards.
True
False
