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Basic Electrical Theory: Unit 6 - Uses of
Electromagnetism Exam Questions With
Correct Answers
Ohmmeters measure the __________ or opposition to current flow of a circuit or component. -
answer✔resistance
The stationary magnetic field of a dc motor, called a "___________," is a permanent magnet or
an electromagnet. - answer✔stator
"Normally Open" means that the contacts are open when power is applied to the coil. -
answer✔False
A holding relay is primarily used for worker convenience. - answer✔False
DC ammeters of the direct connection type must be connected in _____ with the power source
and the load. If connected in reverse polarity, the coil will move in the opposite direction. -
answer✔series
A clamp-on ac ammeter has a coil that is clamped around the conductor and detects the rising
and falling _____ field being produced due to the ac flow through the conductor. -
answer✔magnetic
Basic Electrical Theory: Unit 6 - Uses of
Electromagnetism Exam Questions With
Correct Answers
Ohmmeters measure the __________ or opposition to current flow of a circuit or component. -
answer✔resistance
The stationary magnetic field of a dc motor, called a "___________," is a permanent magnet or
an electromagnet. - answer✔stator
"Normally Open" means that the contacts are open when power is applied to the coil. -
answer✔False
A holding relay is primarily used for worker convenience. - answer✔False
DC ammeters of the direct connection type must be connected in _____ with the power source
and the load. If connected in reverse polarity, the coil will move in the opposite direction. -
answer✔series
A clamp-on ac ammeter has a coil that is clamped around the conductor and detects the rising
and falling _____ field being produced due to the ac flow through the conductor. -
answer✔magnetic
