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Questions and Answers
What are the two main operating principles of electromechanical relays?
Which type of relay operates by an armature being attracted to the poles of an electromagnet or a plunger being drawn into a solenoid?
What is the main operating principle of induction relays?
Which type of relay may be actuated by DC or AC quantities?
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What is the specific type of relay that operates by a plunger being drawn into a solenoid?
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What are the two main operating principles of electromagnetic attraction relays?
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What are the important types of electromagnetic attraction relays?
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What is the specific principle on which induction relays operate?
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What is the specific type of relay that operates by a plunger being drawn into a solenoid?
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Which type of quantities can actuate the important types of electromagnetic attraction relays?
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Study Notes
Operating Principles of Electromechanical Relays
- Two main operating principles are electromagnetic attraction and electromagnetic induction.
- Electromagnetic attraction involves an armature being attracted to the poles of an electromagnet, or a plunger being drawn into a solenoid.
Types of Relays
- Electromagnetic Attraction Relays: Operate through magnetic attraction; key types include simple switch relays and latching relays.
- Induction Relays: Operate based on the interaction of magnetic fields; respond primarily to AC quantities but can also be actuated by DC.
- Solenoid Relays: Specifically operate by a plunger being drawn into a solenoid.
Operating Principles of Induction Relays
- Induction relays utilize the principle of electromagnetic induction, where electric current creates magnetic fields that induce motion.
Actuation of Relays
- Electromagnetic attraction relays can be actuated by both DC and AC quantities, making them versatile in different electrical systems.
- Induction relays are primarily designed to respond to alternating current (AC).
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Description
Test your knowledge of electromechanical relays operation with this quiz. Learn about the operating principles and types of electromagnetic attraction and induction relays.
