Sometimes voltage and power gains can be extremely high or extremely low, so another unit was developed to represent these extremes. The ____ is a unit used to express the ratio of one unit to another.
a. logarithm
b. exponent
c. parallelogram
d. decibel
d. decibel
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President Nixon's 1970 invasion of Cambodia led to
A. a successful suppression of Viet Cong gains in South Vietnam. B. congressional approval for an expanded war effort. C. a growing threat from the Soviet Union to enter the war on the side of North Vietnam. D. dramatic new waves of bitter domestic protest against the war. E. an end to the secret American bombing campaign against Cambodia.
Many HVACR industry publications are published by:
A) HVACR industry trade groups. B) The federal government. C) Fox News and CNN. D) Local state governments.
PWM stands for ____.
A. permanent magnet motor B. perfectly whirling machine C. partial winding motor D. pulse-width modulation
A bathroom has a toilet, a sink, and a urinal. What size supply is required?
Fill in the blank(s) with the appropriate word(s).