Skin effect and induction change the resistance in alternating-current (ac) circuits, therefore resistance of a conductor is ____.
A. slightly lower in an ac circuit
B. reciprocally lower in a dc circuit
C. slightly higher in an ac circuit
D. reciprocally higher in a dc circuit
Answer: C
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At sea level, the air pressure applied to every square inch of the Earth’s surface is roughly _____.
a. 14.7 psi b. 0 psia c. 27.68 in. w.c. d. 1.47 psia
Which of the following temperature scales is known as an absolute scale?
a. Fahrenheit b. Celsius c. Centigrade d. Kelvin
On oblique drawings lines drawn on freehand sketches and on instrument drawings should be drawn as construction lines in the beginning.
Answer the following statement true (T) or false (F)
The temperature on the Fahrenheit scale where all molecular biology activity stops is ____.
A. -450°F B. -460°F C. -0°F D. -462.95°F