Quiz about Magnetic Control and Switching Circuits I - Relays and Controls

Question 1

Objective: Identify the parts of a relay.

Accepted Answer

Coil, Armature, Contacts, Spring

Answer

Resistor, Diode, LED, Switch

Answer

Transistor, Capacitor, Inductor, Fuse

Answer

Battery, Motor, Lamp, Buzzer

Question 2

Refer to the diagram of the relay. What is the part labeled as 'Release spring'?

Accepted Answer

Release spring

Answer

Armature

Answer

Coil

Answer

Contact

Question 3

Refer to the diagram of the relay. What is the part labeled as 'Armature'?

Accepted Answer

Armature

Answer

Coil

Answer

Contact

Answer

Spring

Question 4

Refer to the diagram of the relay. What is the part labeled as 'Moving contact'?

Accepted Answer

Moving contact

Answer

Fixed contact

Answer

Coil

Answer

Armature

Question 5

Refer to the diagram of the relay. What is the part labeled as 'Core'?

Accepted Answer

Core

Answer

Armature

Answer

Spring

Answer

Contact

Question 6

Refer to the diagram of the relay. What is the part labeled as 'Coil'?

Accepted Answer

Coil

Answer

Armature

Answer

Contact

Answer

Spring

Question 7

Refer to the diagram of the relay. What is the part labeled as 'Coil terminals'?

Accepted Answer

Coil terminals

Answer

Armature contacts

Answer

Normally open contacts

Answer

Common terminal

Question 8

Refer to the diagram of the Typical Simplified Electromechanical Relay Schematic. What is the name of the part labeled as the pivot?

Accepted Answer

Pivot

Answer

Coil

Answer

Armature

Answer

Contact

Question 9

Refer to the diagram of the Typical Simplified Electromechanical Relay Schematic. Which part is responsible for generating the magnetic field?

Accepted Answer

Energizing coil

Answer

Armature

Answer

Contact spring

Answer

Load terminal

Question 10

Refer to the diagram of the Typical Simplified Electromechanical Relay Schematic. The air gap is located between which two parts?

Accepted Answer

The air gap is located between the yoke and the armature.

Answer

The air gap is located between the coil and the contacts.

Answer

The air gap is located between the armature and the spring.

Answer

The air gap is located between the yoke and the coil.

Question 11

Which contact is closed when the relay is not energized?

Accepted Answer

Normally closed

Answer

Normally open

Answer

Auxiliary contact

Answer

Overload contact

Question 12

What is the purpose of the coil supply voltage?

Accepted Answer

The coil supply voltage energizes the coil to create a magnetic field.

Answer

The coil supply voltage cools down the coil to prevent overheating.

Answer

The coil supply voltage measures the resistance of the coil.

Answer

The coil supply voltage provides mechanical support to the coil.

Question 13

Fill in the blank: A conductor formed into loops such that when current flows through the coil, an electromagnetic field is created is called a _________

Accepted Answer

Relay Coil

Answer

Resistor

Answer

Capacitor

Answer

Diode

Question 14

Fill in the blank: A core is made of magnetic material. It is magnetized from the polarity of the magnetic field created by the energized ________.

Accepted Answer

coil

Answer

resistor

Answer

capacitor

Answer

diode

Question 15

Fill in the blank: When the coil is de-energized this spring returns the armature quickly back to its normal position. This spring is called the _________.

Accepted Answer

Return Spring

Answer

Tension Spring

Answer

Compression Spring

Answer

Contact Spring

Question 16

Fill in the blank: A movable metal strip that provides the mechanical action to operate the moveable contacts connected to it is called the _________.

Accepted Answer

Armature

Answer

Rotor

Answer

Stator

Answer

Commutator

Question 17

Fill in the blank: ________ are a set of contacts that are in the open position when the relay coil is not energized.

Accepted Answer

Normally Open Contacts

Answer

Normally Closed Contacts

Answer

Auxiliary Contacts

Answer

Latching Contacts

Question 18

Fill in the blank: ________ are a set of contacts that are in the closed position when the relay coil is not energized.

Accepted Answer

Normally Closed Contacts

Answer

Normally Open Contacts

Answer

Auxiliary Contacts

Answer

Time Delay Contacts

Question 19

What is the final output number if you start from box 1 and follow the arrows?

Accepted Answer

13

Answer

7

Answer

21

Answer

5

Question 20

Normally open contacts are a set of contacts that are in the open position when the coil relay is ____________.

Accepted Answer

Not energized

Answer

Energized

Answer

Activated

Answer

Closed

Question 21

Normally closed contacts are a set of contacts that are in the open position when the coil relay is ____________.

Accepted Answer

Energized

Answer

De-energized

Answer

Activated

Answer

Disconnected

Magnetic Control and Switching Circuits I - Relays and Controls

26 questions

Objective: Identify the parts of a relay.

Refer to the diagram of the relay. What is the part labeled as 'Release spring'?

Refer to the diagram of the relay. What is the part labeled as 'Armature'?

Refer to the diagram of the relay. What is the part labeled as 'Moving contact'?

What is the part labeled as 'Fixed NO contact'?

Refer to the diagram of the relay. What is the part labeled as 'Fixed NC contact'?

Refer to the diagram of the relay. What is the part labeled as 'Core'?

Refer to the diagram of the relay. What is the part labeled as 'Coil'?

Refer to the diagram of the relay. What is the part labeled as 'Coil terminals'?

Refer to the diagram of the Typical Simplified Electromechanical Relay Schematic. What is the name of the part labeled as the pivot?

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