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Electromechanical Relays Operation Quiz

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Questions and Answers

What are the two main operating principles of electromechanical relays?

Electromagnetic attraction and electromagnetic induction (correct)

Electrostatic repulsion and magnetic induction

Electrostatic attraction and electromagnetic induction

Electromagnetic repulsion and magnetic induction

Which type of relay operates by an armature being attracted to the poles of an electromagnet or a plunger being drawn into a solenoid?

Solenoid-induced armature type relay

Magnetic induction type relay

Attracted armature type relay (correct)

Repelled armature type relay

What is the main operating principle of induction relays?

Principle of electromagnetic attraction

Principle of electromagnetic induction (correct)

Principle of induction motor

Principle of electrostatic repulsion

Which type of relay may be actuated by DC or AC quantities?

Solenoid type relay Signup and view all the answers

What is the specific type of relay that operates by a plunger being drawn into a solenoid?

Solenoid-induced armature type relay Signup and view all the answers

What are the two main operating principles of electromagnetic attraction relays?

Electromagnetic attraction relays operate on the principles of electromagnetic attraction and electromagnetic induction. Signup and view all the answers

What are the important types of electromagnetic attraction relays?

The important types of electromagnetic attraction relays are attracted armature type relay, solenoid type relay, and plunger type relay. Signup and view all the answers

What is the specific principle on which induction relays operate?

Induction relays operate on the principle of electromagnetic induction and are widely used for protective relaying purposes involving AC quantities. Signup and view all the answers

What is the specific type of relay that operates by a plunger being drawn into a solenoid?

Plunger type relay is the specific type of relay that operates by a plunger being drawn into a solenoid. Signup and view all the answers

Which type of quantities can actuate the important types of electromagnetic attraction relays?

The important types of electromagnetic attraction relays may be actuated by DC or AC quantities. Signup and view all the answers

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.