Which of the following statements about RLL is NOT true?
A) NC contact symbol has the same two parallel lines with a line across them to indicate closed contacts.
B) NO contact symbol has two parallel lines to indicate an open contact.
C) The right power rail is positive or the high side of the source, and the left power rail is the power return or ground.
D) RLL stands for Relay Ladder Logic.
C
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Electrical installations in and around natural and manmade bodies of water are covered in which of the following?
a. NEC Article 520 b. NEC Article 555 c. NEC Article 680 d. NEC Article 682
How much power is consumed by a circuit with a 120V source that draws 18A through a resistive load?
a. 6.7 watts b. 6.7 ohms c. 2,160 watts d. 0.15 ohms
Which SAE standard(s) must be referred to on the label of approved HFC-134a refrigerant recycling machines?
A. SAE J1988 or SAE J1627 B. SAE J1989 or SAE J2791 C. SAE J1990 or SAE J2297 D. SAE J2210 or SAE J2788
Go to the National Center for Biotechnology Information (NCBI) Web site, and click on Online Mendelian Inheritance in Man™ (OMIM™). Go to Human Genome Resources, and click on Genes and Disease. Find a genetic disease that interests you and write a paragraph starting with a one-line to three-line description of the NCBI Web site and those responsible for OMIM™. The rest of the paragraph should address the following questions about the disease: What are the tissues and/or organs aff ected? What is the disease’s incidence, symptoms, and long-term consequences? Do any medical treatments exist? Make a list of any words you did not understand, look them up, and supply a definition next to each word.
What will be an ideal response?