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Principles and Applications of Electrical Test Equipment Quiz

#1

Which instrument is used to measure electrical resistance?

Ohmmeter
Explanation

Measures resistance in electrical circuits.

#2

What is the SI unit of electric current?

Ampere
Explanation

Standard unit for measuring electric current.

#3

Which instrument is used to measure the power consumption of an electrical appliance?

Wattmeter
Explanation

Measures the power consumed by an electrical device.

#4

Which of the following is used to protect electrical circuits from overcurrent?

Fuse
Explanation

Disrupts electrical flow when current exceeds a safe level.

#5

Which of the following is NOT a type of electrical test equipment?

Thermometer
Explanation

Not typically used for electrical testing; measures temperature.

#6

Which of the following is not a type of multimeter?

Cathode-ray oscilloscope
Explanation

Not a type of multimeter; it's a different instrument for visualizing electrical signals.

#7

What does an oscilloscope measure?

Voltage
Explanation

Measures voltage changes over time.

#8

What is the function of a continuity tester?

Testing for open circuits
Explanation

Identifies the continuity or lack thereof in electrical circuits.

#9

What is the purpose of a function generator?

To generate electrical signals
Explanation

Produces specific electrical waveforms for testing and signal generation.

#10

What does a tachometer measure?

Speed
Explanation

Records the speed of rotation of a mechanical component.

#11

What is the purpose of a megger?

To test insulation resistance
Explanation

Primarily used to assess insulation resistance in electrical systems.

#12

What does a phase sequence indicator determine?

Phase rotation
Explanation

Identifies the sequence of phases in a polyphase electrical system.

#13

Which instrument is used to detect the presence of an electric field?

Field strength meter
Explanation

Measures the strength of electric fields in a given area.

#14

What is the primary application of a hipot tester?

To test insulation strength
Explanation

Assesses the dielectric strength of electrical insulation.

#15

What is the primary function of a relay tester?

To test relay operation
Explanation

Evaluates the functionality and performance of electrical relays.

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