Deck 3: Manual Starters

Question 1

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?

Answer 1

The disadvantage is that the unexpected and sudden restart of a piece of equipment could cause injury.

Question 2

What is meant by across-the-line starters?

Answer 2

Across-the-line starters are those which connect the motor directly to the power line.

Question 3

Motors of 1 horsepower or less are considered ____________________ horsepower.

Answer 3

fractional

Question 4

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

Question 5

How is a manual push button starter reset?

Question 6

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

Question 7

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

Question 8

Any heat source can cause an overload to trip.

Question 9

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

Question 10

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

Question 11

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

Question 12

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

Question 13

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

Question 14

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

Question 15

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