A switch controls the flow of electricity by:
A) Breaking the circuit when it is turned off.
B) Modulating the current to a low level when it is turned off.
C) Using up all the electricity when it is turned off.
D) Adding resistance to the circuit when it is turned off.
A
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The term _____ refers to growth resulting from an increase in the number of cells
a. Hyperplasia c. Meiosis b. Turgor d. Hypertrophy
A water-source heat pump does not require a defrost cycle because:
A) It uses buried loops in which water is circulated, and the heat is then extracted from the water. B) Most water-source units use a single bi-flow thermostatic expansion valve. C) The fluid circulating through the water-source unit cannot be allowed to freeze. D) There are no check valves or extra metering devices within a water-source heat pump.
What effect will an open inductor have on the circuit in Figure 12-3?
A) The cutoff frequency will increase. B) The current will drop to zero. C) The output voltage at the cutoff frequency will decrease. D) The output voltage at the cutoff frequency will increase.
The ________ electromagnet cannot be further magnetized
A) open B) saturated C) capacitive D) shorted