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Electrical Schematic Symbols Quiz

hard 20 Questions
Question 1 of 20

What is the general symbol for a motor?

The letter 'M' is commonly used to represent a motor in electrical schematics.
Question 2 of 20

Which symbol represents a normally open (N/O) contact?

A normally open contact is represented by a pair of open lines that close when the associated device is activated.
Question 3 of 20

What does the symbol 'A' typically represent in an electrical schematic?

The letter 'A' is used to denote an ammeter in electrical diagrams, a device used for measuring electric current.
Question 4 of 20

What is the general symbol for a capacitor?

A capacitor is often represented by two parallel lines.
Question 5 of 20

What does the symbol 'V' typically represent in an electrical schematic?

The letter 'V' indicates a voltmeter, which measures voltage.
Question 6 of 20

Which symbol represents a normally closed (N/C) contact?

A normally closed contact is represented by lines that are closed initially and then open when activated.
Question 7 of 20

What does the symbol for an earth connection look like?

An earth connection is represented by three parallel horizontal lines decreasing in length.
Question 8 of 20

What is the symbol for a fuse?

The symbol for a fuse is generally a circle.
Question 9 of 20

Which symbol represents a diode?

A diode symbol is a triangle with a line on top.
Question 10 of 20

What does 'PB' stand for in electrical schematic symbols?

'PB' is an abbreviation for Push Button.
Question 11 of 20

What symbol represents a coil or inductor?

A coil or inductor is represented by a series of curved lines resembling a spring.
Question 12 of 20

What is the symbol for a light-emitting diode (LED)?

The LED symbol shows a diode with outgoing arrows.
Question 13 of 20

What symbol is used for a circuit breaker?

A circuit breaker symbol often resembles a switch (open or closed) with 'CB' above.
Question 14 of 20

What symbol represents an AC supply to a relay coil?

An AC supply is usually indicated by a wave symbol near the coil.
Question 15 of 20

What is the general symbol for a generator?

The letter 'G' is a common symbol for a generator in schematic diagrams.
Question 16 of 20

Which symbol is used for a selector switch?

A selector switch has multiple contacts that can switch between different positions.
Question 17 of 20

What does a 'Normally Closed' contact do?

A normally closed contact is closed when de-energized and opens when the control element is activated.
Question 18 of 20

What is the purpose of an isolator (disconnector)?

An isolator provides a clear, visible gap in the circuit to ensure electrical isolation for safety purposes.
Question 19 of 20

Which symbol represents a coaxial connector?

A coaxial connector is often represented by concentric circles or squares.
Question 20 of 20

What is the common abbreviation for 'Emergency Stop' push button?

'E-STOP' is the common abbreviation for an Emergency Stop push button.
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