300 Final Study Guide questions with correct answers

What precautions should be taken when restoring power to elevator equipment after a lockout and tag out? CORRECT ANSWER Ensure that all personnel are clear of equipment When using power tools, what is used to detect an imbalance between hot and neutral to protect personnel of electrical shock? CORRECT ANSWER Ground Fault Circuit Interrupter (GFCI) If a co-worker is in contact with a live circuit what immediate action should be taken? CORRECT ANSWER Remove power and remove co-worker from source. What precautions should be taken when performing cleaning operation on elevator electrical equipment? CORRECT ANSWER Remove power, lockout and tagout What is a coulomb? CORRECT ANSWER the unit that measures the quantity of electrons passing a given point When the cross sectional of a conductor is doubled, what happens to resistance? CORRECT ANSWER Halves What is contained in the nucleus of an atom? CORRECT ANSWER Neutrons and protons