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1. Equipment grounding involves connecting to earth ground all parts of an
electrical system that do not carry current under normal conditions.
A. Insulated
B. Metallic✓
C. Energised
D. Conductive plastic
2. A current as small as can be fatal to a human being.
A.1 A
B.500 mA
C.100 mA✓
D.10 A
3. Stands for National Electrical Code.
A. NEMA
B. IEC
,C. NEC✓
D. NFPA
4. Standing on a wet floor the resistance between you and ground, increasing the
possibility of severe shock.
A. Decreases✓
B. Increases
C. Stabilises
D. Has no effect on
5. is the process of blocking the energy flow from a power source to a piece of
equipment and assuring it remains blocked.
A.Tagout
B.Lockout✓
C.Isolation
D.De-energisation
6. An alternator has three main windings that are placed degrees apart.
A.90°
B.120°✓
C.180°
D.60°
, 6. A configured distribution system has one end of each phase winding connected
together at a common point.
A.Delta
B.Wye✓
C.Star-Delta
D.Open-loop
7. A configured distribution system has each phase winding connected end-to-end
to form a closed loop.
A.Delta✓
B.Wye
C.Single-phase
D.Open-delta
8. A(n) is a conductor that provides a return path to the source for the current-
carrying conductors in the system.
A.Ground wire
B.Phase conductor
C.Neutral✓
D.Bonding conductor
9. When one of the phases of a system becomes grounded, it is called a .
A.Short circuit
B.Open circuit