How do automatic sequence control circuits determine when the next motor should start?
What will be an ideal response?
There are a number of methods that can be employed to determine when the next motor should start. Some circuits sense motor current. When the current of a motor drops to a predetermined level, it will permit the next motor to start. Other circuits sense the speed of one motor before permitting the next one to start. One of the most common methods is time delay.
You might also like to view...
Block names can be determined by the design itself or can be a description of the block's function in construction.
Answer the following statement true (T) or false (F)
Normal practice when installing slip-on flanges is to extend the flange facing beyond the end of the pipe about _____ inch or the wall thickness of the pipe, whichever is greater.
a. 1/8 b. 1/4 c. 3/8 d. 1/2
The stick-system type of curtain wall is commonly used on buildings of less than _____
a. 15 stories b. 12 stories c. 5 stories d. 3 stories
The main limit switch shuts the gas valve down when:
A) The house temperature reaches 80°F. B) The heat exchanger area becomes overheated. C) The blower motor overheats. D) The monthly BTU limit has been reached.