CNIM Guidelines - Practice Questions- With Complete Solutions

What is the maximum allowable chassis leakage current? a) 10 mA b) 20 mA c) 0.1 mA d) 10 mA correct answer: C What is the maximum allowable leakage current from the isolated amplifier inputs through the patient leads? a) 10 uA b) 100 uA c) 1 mA d) 10 mA correct answer: A What is the machine that measures current leakage? a) Ammeter b) Ohmmeter c) Voltmeter d) Photometer correct answer: A What is the color code for ground in an AC Power line? a) Red b) Green c) Black d) White correct answer: B Having poor ground resistance represents a safety problem b/c: a) No, it really is not a safety issue b) Any current leaking to the chassis may find a path to ground through your body c) The machine might not function properly d) It may affect other electrical equipment that have connections to Earth ground correct answer: B How frequently should the evoked potential machines be calibrated and safety tested? a) Only when there is a problem b) Every 6 months c) Once a year d) Once every two years correct answer: B Evoked potential systems must be calibrated a MINIMUM of once every: a) Six months b) One year c) Two years