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Basic Electrical Theory - Chap 4 Review

Across
Distribution BLANK reduce the primary voltage to secondary distribution voltage.
A(n) BLANK is the operation of equipment or conductors in excess of their rated ampacity.
Earth is not an effective BLANK current path.
Resistance is also referred to as BLANK
BLANK breaker operate on the principle of electromagnetism only and are used for very large motors.
BLANK breakers operate on the principle that as the current increases, the time it takes for the device to open decreases.
Premises wiring uses the "BLANK ground neutral system".
The BLANK sensing element causes the circuit breaker to open when a predetermined calibration temperature is reached.
Conductor power losses are directly proportional to the length of the conductor and the BLANK of the current.
Down
BLANK breakers permit the thermal trip setting to be adjusted to coordinate the circuit breakers operation with other protection devices.
Metal parts of premises wiring are BLANK to a low-impedance path to carry fault current to a neutral conductor at the supply source.
A fuse consists of an element electrically connected to end blades, which is enclosed in a tube and surrounded by a BLANK filler material.
The most common types of overcurrent protection are BLANK and circuit breakers.
Electrons leaving a BLANK are always trying to return to it.
The purpose of overcurrent protection is to protect against current in excess of the rated BLANK.
The electric utility grounds the primary and secondary neutral conductor to the earth at multiple locations to create a parallel path in order reduce the ac BLANK of the return neutral path.
Conductor BLANK is directly proportional to the conductor length.
As current flows through the BLANK of a fuse, it generates heat. When a sustained overload occurs, the heats melts a portion, stopping the flow of current.
Neutral current is not permitted to flow on BLANK parts of the electrical installation.