What is the major advantage of a clamp-on ammeter?
What will be an ideal response?
The advantage is the ability to measure current flow through a wire without breaking the circuit.
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All of the following are true conditions of the Chesapeake, as compared to the Deep South, EXCEPT
A. tobacco was less physically demanding than rice. B. tobacco plantations were larger and closer to one another, allowing for more contact with friends and relatives. C. the proportion of female slaves in the Chesapeake had begun to rise by 1720. D. it was one of the few slave societies in history to perpetuate itself by its own natural reproduction. E. as the slave population began to rise, the development of a distinctive African American family life became impossible.
Los aparatos de iluminación que distribuyen de 40% a 60% de su luz emitida hacia abajo con equilibrio hacia arriba, con emisión de muy poca luz en ángulos horizontales, se clasifican como aparatos de iluminación _____.
a. directos b. difusos en general c. indirectos d. directos-indirectos
Most large commercial and industrial conditioned air systems use large ____________________ to supply the air flow that is needed to condition the structure.
Fill in the blank(s) with the appropriate word(s).
Infrared light is highly susceptible to interference from other sources of light.
Answer the following statement true (T) or false (F)