Name:     ID: 
 
Email: 

MECH2320Chapter3Homework

True/False
Indicate whether the statement is true or false.
 

 1. 

Starters that are intended to protect motors that operate on 240 volts should contain four load contacts.
 

 2. 

Some motors can draw up to 600 percent of rated full load current during starting.
 

 3. 

Manual push button line voltage starters are manufactured with two or three line voltage contacts.
 

 4. 

Integral horsepower manual starters with low voltage release will restart automatically after a power failure without being reset.
 

 5. 

Any heat source can cause an overload to trip.
 

Completion
Complete each statement.
 

 6. 

Motors of 1 horsepower or less are considered ____________________ horsepower.
 

 

 7. 

Line voltage devices may have contacts rated for 15 to ____________________ amperes.
 

 

 8. 

Push button type manual starters are ____________________, not fractional, horsepower starters.
 

 

 9. 

If any one of the overloads should trip, a mechanical mechanism opens the load ____________________ and disconnects the motor from the line.
 

 

 10. 

Some common causes of motor overloads are bad ____________________ in either the motor or the load the motor operates.
 

 

Short Answer
 

 11. 

What is meant by across-the-line starters?
 

 12. 

What is the disadvantage of the automatic restart feature on equipment such as lathes, milling machines, saws, drill presses, or any other type machine that may have an operator present?
 

 13. 

What are manual push button line voltage starters with two contact models intended to control?
 

 14. 

How is a manual push button starter reset?
 

 15. 

What is the simplest way to determine if the motor is overloaded?
 



 
         Start Over