The switching action of the commutator is called ____________________.
Fill in the blank(s) with the appropriate word(s).
commutation
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The Salem witchcraft trials were
A. a result of Roger Williams's activities. B. the result of unsettled social and religious conditions in rapidly evolving Massachusetts. C. caused by ergot in the Puritans' bread. D. unique to the English colonies. E. accusations made by the daughters of business owners.
To determine the number of cubic yards of concrete needed for a job, find the number of cubic feet and divide by ____.
a.3 b.9 c.12 d.27
Technician A says that a MAF sensor is a high-authority sensor and is responsible for determining the fuel needs of the engine based on the measured amount of air entering the engine. Technician B says that a cold wire MAF sensor uses the electronics in the sensor itself to heat a wire 20°C below the temperature of the air entering the engine. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
When brazing is finished, which of the following valves should be shut off first?
a. Acetylene valve on the tank regulator b. Oxygen valve on the tank regulator c. Acetylene valve on the torch handle d. Oxygen valve on the torch handle