Electrical Circuit Diagnosis and Measurement Quiz
Test your knowledge on electrical circuit diagnosis with questions on current, resistance, laws, tools, components, and more.
#1
Which tool is used to measure electrical current?
Voltmeter
Ammeter
Ohmmeter
Wattmeter
#2
What is the SI unit of electrical resistance?
#3
What is the primary function of a fuse in an electrical circuit?
To regulate voltage
To store electrical energy
To interrupt excessive current flow
To amplify electrical signals
#4
What is the unit of electrical power?
#5
What is the function of a circuit breaker in an electrical system?
To regulate voltage
To store electrical energy
To interrupt the circuit during overload or short circuit conditions
To convert AC to DC
#6
Which law states that the total current entering a junction is equal to the total current leaving the junction in a circuit?
Kirchhoff's Voltage Law
Ohm's Law
Faraday's Law
Kirchhoff's Current Law
#7
What does an oscilloscope measure?
Voltage
Current
Resistance
Frequency
#8
What is the function of a multimeter in electrical testing?
To measure voltage only
To measure resistance only
To measure multiple electrical quantities such as voltage, current, and resistance
To generate electrical signals
#9
In an AC circuit, what does the phase angle represent?
Resistance
Frequency
Time delay between voltage and current
Inductance
#10
What is the purpose of a diode in an electrical circuit?
To regulate voltage
To amplify electrical signals
To control the flow of current in one direction
To store electrical energy
#11
Which component of an electrical circuit dissipates power as heat?
Resistor
Inductor
Capacitor
Transformer
#12
What is the purpose of a transistor in an electrical circuit?
To regulate voltage
To store electrical energy
To amplify or switch electronic signals
To convert AC to DC
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