DC Motors and Starters Quiz

What do DC motor starters control?

• The speed of the motor

• The starting and stopping of DC motors

• The color of the motor

• The size of the motor

What is one advantage of resistance starting?

• High efficiency

• Simple and inexpensive

• Smooth acceleration

• Precise control

What does autotransformer starting do?

• Increases the motor size

• Adds more resistance

• Reduces the voltage during starting

• Stops the motor immediately

What is a disadvantage of rheostatic starting?

• High starting torque

• Less efficient than autotransformer starting

• Smooth acceleration

• Simple to use

What does rotor resistance starting help with?

• Stopping the motor quickly

• Adding more voltage

• Smooth acceleration and high starting torque

• Making the motor smaller

What is a feature of electronic starting?

• Very simple to set up

• Uses a series resistor

• Only for small motors

• Highly efficient and precise control

What is one disadvantage of resistance starting?

• Easy to control

• Very low energy consumption

• Power dissipation in the resistor

• High starting torque

What does a DC motor starter protect the motor from?

• Excessive current draw

• Cold temperatures

• Low voltage

• Loud noises

What is the purpose of adding a series resistor in resistance starting?

• To increase the voltage

• To limit the initial current

• To stop the motor quickly

• To make the motor bigger

What is a benefit of using an autotransformer?

• Only for large motors

• More complex than resistance starting

• Less control over starting current

• Higher starting torque