Electrical Controls Quiz

What is the purpose of a relay in an electrical control circuit?

• To store electrical energy in a circuit.

• To control the flow of current in a circuit.

• To amplify the voltage in a circuit.

• To regulate the frequency of a circuit.

What is the difference between a normally open (NO) and normally closed (NC) contact in a control circuit?

• The difference between a normally open (NO) and normally closed (NC) contact in a control circuit is their material.

• The difference between a normally open (NO) and normally closed (NC) contact in a control circuit is their color.

• The difference between a normally open (NO) and normally closed (NC) contact in a control circuit is their initial state when the control circuit is not energized.

• The difference between a normally open (NO) and normally closed (NC) contact in a control circuit is their size.

What is the function of a motor starter in an electrical control system?

• The function of a motor starter in an electrical control system is to control the speed of the motor.

• The function of a motor starter in an electrical control system is to start and stop an electric motor and provide protection to the motor.

• The function of a motor starter in an electrical control system is to provide lighting to the motor.

• The function of a motor starter in an electrical control system is to regulate the voltage supplied to the motor.

What is the purpose of a control transformer in an electrical control circuit?

• To regulate the current

• To step down the voltage

• To step up the voltage

• To increase the power

What is the role of a push button in an electrical control circuit?

• The role of a push button in an electrical control circuit is to manually control the flow of electricity.

• The role of a push button in an electrical control circuit is to measure the current.

• The role of a push button in an electrical control circuit is to regulate the voltage.

• The role of a push button in an electrical control circuit is to generate electricity.

What is the purpose of a contactor in an electrical control system?

• The purpose of a contactor in an electrical control system is to control the flow of electrical power.

• The purpose of a contactor in an electrical control system is to generate electrical power.

• The purpose of a contactor in an electrical control system is to transmit data wirelessly.

• The purpose of a contactor in an electrical control system is to regulate the temperature.

What is the difference between a control panel and a control station in an electrical control system?

• A control panel is a device while a control station is a location or area where the control panel is installed.

• A control panel is used for high voltage systems while a control station is used for low voltage systems.

• A control panel is used for manual control while a control station is used for automatic control.

• A control panel and a control station are the same thing.

What is the function of a timer relay in an electrical control circuit?

• The function of a timer relay in an electrical control circuit is to transmit data between different components of the circuit.

• The function of a timer relay in an electrical control circuit is to regulate the temperature in the circuit.

• The function of a timer relay in an electrical control circuit is to measure the voltage in the circuit.

• The function of a timer relay in an electrical control circuit is to control the timing of actions or events within the circuit.

What is the purpose of a limit switch in an electrical control system?

• The purpose of a limit switch in an electrical control system is to control the temperature of the system.

• The purpose of a limit switch in an electrical control system is to regulate the voltage of the system.

• The purpose of a limit switch in an electrical control system is to measure the speed of the system.

• The purpose of a limit switch in an electrical control system is to detect the presence or absence of an object and to limit the movement of a mechanical component.

What is the role of a solenoid valve in an electrical control circuit?

• The role of a solenoid valve in an electrical control circuit is to generate electricity.

• The role of a solenoid valve in an electrical control circuit is to control the flow of fluids or gases.

• The role of a solenoid valve in an electrical control circuit is to provide insulation.

• The role of a solenoid valve in an electrical control circuit is to measure the voltage.