Connecting a Motor Quiz

What connects a motor to an electrical supply to run?

• Switchgear
• Battery
• Transformer
• Generator

What happens when a simple switch is closed?

• The motor is disconnected from the supply
• The motor will run
• The switch will be damaged
• High currents will flow

Why is a simple switch not suitable for starting a large motor?

• It is inexpensive
• It can handle high currents
• It could be a hazard to the operator
• It can handle low currents

What is used to connect a motor to the supply in industrial settings?

• Simple switch
• Contactor
• Light bulb
• Resistor

What does a contactor use to operate?

• A battery
• An electromagnet
• A resistor
• A capacitor

What activates the electromagnet in a contactor?

• High current circuit
• Low current control circuit
• Manual switch
• Thermal relay

What component in the power circuit protects against electrical overload?

• Fuse
• Switch
• Contactor
• Electromagnet

What shows when the motor is on in a control circuit?

• Stop button
• Start button
• Pilot light
• Thermal relay

What type of control circuit connects the motor directly to the power supply?

• Reversing circuit
• In-line circuit
• Direct in-line starting circuit
• Parallel circuit

What is the primary function of a thermal relay in a motor circuit?

• To start the motor

• To stop the motor

• To protect against overload

• To increase voltage