REVIEW QUESTIONS 1 According to ANSI standards what is the high frequency cut off for electrical leakage tests A 60 Hz B 100 Hz C 1,000 Hz D 10,000 Hz 2 What is the maximum resistance allowed between the chassis of a device and ground pin of its power cord? A 0.5 Ω B 0.05 Ώ C 0.01 Ώ D 0.10 Ώ 3 What is the current level consider the “let go” point? A 15mA B 150mA C 1.5mA D 15 μ A 4 If a portable device is defective and you cannot fix it right away what should you do? A Tape a sign “Broken” on the device B Use the hospital “lock-out-tag out” procedure C Remove it from the area D B and C 5 What are the U.S. power cord colors for hot, neutral and ground? Black is Hot White is Neutral Green is ground For international power cords brown is hot, blue is neutral and green/yellow is ground. When wiring plugs or out outlets the hot wire goes to the “gold” post. 6 The latest US electrical code requires Isolated Power Supplies in which area? A The ICU B Clinical Labs C Operating rooms with no explosive agents allowed D None of the above. Namal Gunawardana
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