VIP notes cheer copy Flashcards
An electrician should always consider the circuit to be hot unless he definitely knows otherwise.the main reason is to avoid _____.
Personal injury
A solenoid is a/an
Electromagnet
The best thing to cut PVC conduit within a tight area is ____.
A nylon string.
If a live conductor is contacted accidentally, the severity of the electrical shock is determined primarily by________.
The contact resistance
Ohm’s law is ________.
The relationship between voltage
, current and resistance.
What is the normal taper on a standard conduit thread-cutting die?
3/4’’ per foot
In an AC circuit the radio of the power in watts to the total volt-amps is called the________.
Power factor.
The total load on any over current device located in a panel board shall not exceed______of its rating where in normal operation the load will continue for 3hr or more.
80%
Four heaters, each having a resistance of 30 ohms are connected in series across a 600 volt train circuit, the current is ____amperes.
5
A ladder which is painted is a safety hazard mainly because the paint ______.
May conceal weak spots in the rails or rungs
The chemical used as the agent in fire extinguisher to fight electrical fires is __________.
Carbon dioxide (CO2)
A location classified as ______may be temporarily subject to dampness and wetness.
Dry
The average dry cell battery gives an approximate voltage of _______.
1.5-1.
The _____circuit is that portion of a wiring system beyond the final over current protection.
Branch
In a series circuit when the voltage remains constant and the resistance increases, the current ________.
Decrease
The neutral conductor shall not be ______.
Fused
The voltage drop in a line can be decreased by ________.
.increasing the wire
.decreasing the load
A three phase delta-wye connected transformer, 480 primary, 208/120 secondary,the secondary line circuit is _________.
Equal to the secondary phase current
Insulating safety grips on tools________.
Should be used with other insulating equipment.
The rating of any one portable appliance shall not exceed_____percent of the branch circuit rating.
50
A generic term for a group of non-flammable synthetic chlorinated hydrocarbon used as electrical insulating media”.
Askarel
The part of an electrical system that performs a mechanical function rather than electrical function is called a/an ______.
Fitting
An electrical consider is best defined as _________.
A wrapping of many layers of metal foil set apart by waxed paper.
Solid wire is preferred instead of stranded wire in panel wiring because___________.
Can be shaped better
