In the down-counter, both the desired preset and the desired accumulated value numbers must be programmed into the instruction before the PLC begins to run.
Answer the following statement true (T) or false (F)
True
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Technician ?A says that valve lifters are sometimes called "tappets." Technician B says that hydraulic lifters should leak very slowly between the plunger and the lifter body. Who is right?
A. Technician A only B. ?Technician B only C. ?Both A and B D. ?Neither A nor B
The Seventeenth Amendment to the Constitution was a key progressive reform designed to
A. end the corrupt and family-destroying influence of the liquor industry. B. make Senators directly elected and end the Senate millionaire's club. C. prohibit child labor. D. guarantee the secret Australian ballot in all federal elections. E. make the initiative and referendum applicable for all federal laws.
Which of the following is not permitted for the bonding required by 250.97?
A. Threadless couplings and connectors for cables with metal sheaths B. Two locknuts, on rigid metal conduit or intermediate metal conduit, one inside and one outside of boxes and cabinets C. Fittings with shoulders that seat firmly against the box or cabinet, with one locknut on the inside of boxes and cabinets D. One locknut outside the enclosure and one metal bushing inside the enclosure for rigid metal conduit or intermediate metal conduit
A motor's speed is determined by ____.
A. size B. voltage C. amperage D. number of motor poles