Recognizing Motor Control Circuit Symbols Quiz…

Q: Which symbol represents a normally open (NO) contact in a motor control circuit?

-------| |------- — NO contacts are closed when the associated device is energized or activated.

Q: What symbol is commonly used to depict a fuse in an electrical schematic?

-------||------- — The symbol represents the physical structure and operation of a fuse.

Q: Which symbol is used to represent an overload relay?

------O/L------ — Overload relays protect motors from excessive current and potential damage.

Q: What does the symbol 'M' generally represent in a motor control circuit?

A motor — The symbol 'M' is a common designation for a motor.

Q: What is the function of a 'push button' switch symbol in a control circuit?

To manually open or close a circuit temporarily. — Push buttons are momentary contact switches for starting or stopping circuits.

Q: Which symbol represents a normally closed (NC) contact?

-------|/|------- — NC contacts are open when the associated device is energized or activated.

Q: What is the common symbol for a coil in a motor starter?

------( )------ — The coil is the energizing part of the relay or motor starter.

Q: Which symbol is used to indicate a three-phase motor?

-------M3------- — The 'M3' designation signifies a three-phase motor.

Q: What does the symbol 'TR' often represent in a motor control schematic?

Timer Relay — TR stands for timer relay, which provides time-delayed contact operations.

Q: Which symbol represents a step-down transformer?

-------( )------- — Transformer windings represented inside the parenthesis indicate its function.

Question 1 of 10

Which symbol represents a normally open (NO) contact in a motor control circuit?

NO contacts are closed when the associated device is energized or activated.

Question 2 of 10

What symbol is commonly used to depict a fuse in an electrical schematic?

The symbol represents the physical structure and operation of a fuse.

Question 3 of 10

Which symbol is used to represent an overload relay?

Overload relays protect motors from excessive current and potential damage.

Question 4 of 10

What does the symbol 'M' generally represent in a motor control circuit?

The symbol 'M' is a common designation for a motor.

Question 5 of 10

What is the function of a 'push button' switch symbol in a control circuit?

Push buttons are momentary contact switches for starting or stopping circuits.

Question 6 of 10

Which symbol represents a normally closed (NC) contact?

NC contacts are open when the associated device is energized or activated.

Question 7 of 10

What is the common symbol for a coil in a motor starter?

The coil is the energizing part of the relay or motor starter.

Question 8 of 10

Which symbol is used to indicate a three-phase motor?

The 'M3' designation signifies a three-phase motor.

Question 9 of 10

What does the symbol 'TR' often represent in a motor control schematic?

TR stands for timer relay, which provides time-delayed contact operations.

Question 10 of 10

Which symbol represents a step-down transformer?

Transformer windings represented inside the parenthesis indicate its function.

Recognizing Motor Control Circuit Symbols Quiz