Three-Phase Motor Starters Quiz

What is the main purpose of a reduced voltage starter?

• To increase the voltage sag

• To increase the starting torque

• To reduce the inrush starting current

• To eliminate the need for a motor

What can excessive starting current cause in a system?

• Increased efficiency

• Reduced inertia

• Higher torque

• Voltage sag

What happens to lights when there is a voltage sag?

• They become brighter

• They may dim

• They turn off completely

• They flicker constantly

What is a potential issue with loads that have high inertia?

• They operate better at low speeds

• They may be damaged by sudden torque

• They start faster with high voltage

• They require less torque

What type of motors are most dual voltage motors?

• 8 lead

• 6 lead

• 9 lead

• 4 lead

How many leads do most single voltage motors have?

• 4 leads

• 6 leads

• 8 leads

• 10 leads

In a dual voltage 6 lead motor, how must the low voltage connection be made?

• In Wye

• In Delta

• In parallel

• In series

What is the correct connection for the high voltage in a dual voltage 6 lead motor?

• In Wye

• In parallel

• In Delta

• In series

What is one benefit of starting a belt-driven fan at reduced voltage?

• Higher starting torque

• Quieter starts

• Faster acceleration

• Increased voltage

What do reduced voltage starters do to starting torque?

• Increase it

• Eliminate it

• Reduce it

• Maintain it