DOL Starters - https://www.youtube.com/watch?v=Shs9lTnZVCU

What is the purpose of the overload relay in a direct online starter?

• To start the motor

• To stop the motor

• To protect the motor from overload

• To control the speed of the motor

What is the function of the retaining contacts (13 and 14) in a direct online starter?

• To start the motor

• To hold the motor contacts in place when the start button is pressed

• To stop the motor

• To reset the motor

What is the typical voltage of the coil in a single phase direct online starter?

• 110 volts

• 230 volts

• 400 volts

• 12 volts

What is the purpose of the auxiliary circuit in a direct online starter?

• To provide power to the motor

• To carry a small current for control purposes

• To measure the motor's speed

• To carry the full load current

What is the typical maximum power rating for a direct online starter used with a grain store motor?

• 2-3 kilowatts

• 8-9 kilowatts

• 6-7 kilowatts

• 4-5 kilowatts

What happens if the neutral connection is incorrectly wired to the coil in a direct online starter?

• The overload relay will trip

• The motor will not start

• The start button will not work

• The motor will run continuously

What is the purpose of the start button in a direct online starter?

• To energize the coil and start the motor

• To test the motor

• To reset the motor

• To stop the motor

What is the purpose of the stop button in a direct online starter?

• To test the motor

• To reset the overload relay

• To de-energize the coil and stop the motor

• To start the motor

What is the function of the armature in a direct online starter?

• To generate a magnetic field

• To pull the contacts in place when the coil is energized

• To control the voltage

• To measure the current

What is the function of the contactor in a direct online starter?

• To provide a manual start and stop function

• To automatically control the motor's operation

• To measure the motor's current

• To protect the motor from short circuits