QUESTIONS AND ANSWERS | VERIFIED ANSWERS | LATEST EXAM
Equipment grounding involves connecting to earth ground all _____ parts of an
electrical system that do not carry current under normal conditions. -
CORRECT ANSWER- Metallic
A current as small as _____ can be fatal. - CORRECT ANSWER- 100 mA
_____ stands for National Electrical Code. - CORRECT ANSWER- NEC
Standing on a wet floor _____ the resistance between you and ground,
increasing the possibility of severe shock. - CORRECT ANSWER- Decreases
_____ is the process of blocking the energy flow from a power source to a piece
of equipment and assuring it remains blocked. - CORRECT ANSWER-
Lockout
An alternator has three main windings that are placed _______ degrees apart. -
CORRECT ANSWER- 120
A ___ configured distribution system has one end of each phase winding
connected together. - CORRECT ANSWER- WYE
A(n) _____ configured distribution system has each phase winding connected
end-to-end to form a loop. - CORRECT ANSWER- DELTA
, A(n) _____ is a conductor that provides a return path to the source for the
current carrying conductors in the system. - CORRECT ANSWER- Neutral
When one of the phases of a system becomes grounded, it is called a _____. -
CORRECT ANSWER- Ground Fault
The two most common devices to disconnect power to a circuit are a _____ and
a circuit breaker. - CORRECT ANSWER- Fusible Disconnect
A _____ fuse has two elements, an instantaneous element and an overload
element. - CORRECT ANSWER- Time-Delay
_____ current is the current that is drawn by a motor when it is operating at its
rated operating speed. - CORRECT ANSWER- Full-Load
_____ is the maximum current carrying capacity of a conductor. - CORRECT
ANSWER- Ampacity
Typically, the overcurrent protection for a motor should be selected for
_________ % of the full-load current of the motor. - CORRECT ANSWER-
125
The _____ of a three-phase motor is made up of three separate sets of windings.
- CORRECT ANSWER- Stator
One of the most common NEMA frame sizes for small motors is _____. -
CORRECT ANSWER- 56
_____ is the temperature of the air surrounding an operating motor. -
CORRECT ANSWER- Ambient Temperature