drive systems

The selection of an electric motor for any application depends on which of the following factors ?

• Electrical characteristics

• Mechanical characteristics

• Size and rating of motors

• All of the above

Which is preferred for automatic drives.

• Squirrel cage induction motor

• Synchronous motors

• Ward-Leonard controlled D.C. motors

• Any of the above

The load cycle for a motor driving a power press will be

• Variable load

• Continuous

• Continuous but periodical

• Intermittent and variable load

Ward-Leonard controlled D.C. drives are generally used for ______ excavators.

• Light duty

• Medium duty

• Heavy duty

• All of the above

_____ is the rate of flow of electric charges.

• Current

• Potential difference

• Power

• Energy

To send a message from one person, thing, or place to another is an example of

• decoding.
• receiving.
• transmitting.
• storing.

Tags

NGSS.MS-PS4-3

The person who originates the message is the ...

• Receiver 
• Decoder
• Source
• Encoder

Television remote controls use infrared (light wave) signals to allow a viewer to change channels from a distance.  Which of the following best describes the operation of the remote control?

• decoding and storing
• storing and retrieving
• encoding and transmitting

Tags

NGSS.MS-PS4-3

What is the name of this VEX electrical system part?

• Bumper Switch
• Limit Switch
• Potentiometer
• Line Tracker

The selection of an electric motor for any application depends on which of the following factors ?

• Electrical characteristics

• Mechanical characteristics

• Size and rating of motors

• All of the above