____________________ forces one contactor to be de-energized before the other one can be energized.
Fill in the blank(s) with the appropriate word(s).
Interlocking
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The four letters ____ represent the unknown quantities in electrical power that may need to be found.
a. P, I, M, and E b. I, M, E, and A c. P, I, R, and E d. I, M, R, and A
A timekeeping system can implement a divide-by-60 counter by cascading two divide-by-30 counters
Indicate whether the statement is true or false
Answer the following statement(s) true (T) or false (F)
1. Composites are created by combing two or more solid materials to make a new material that has properties that are superior to those of the individual components. 2. Composite materials consist of two main ingredients: matrix material and fibers. 3. The term fluids refers to liquids, not gases. 4. Air and water are among the most abundant fluids on earth. 5. Air is a mixture of mostly oxygen, and small amounts of other gases.
Technician A states that a ni-resist insert is a groove insert used on aluminum trunk type pistons. Technician B states ni-resist inserts are often used in the oil ring grooves. Who is correct?
A. Technician A only. B. Technician B only. C. Both A and B. D. Neither A nor B.