technical 2 Flashcards
The armature current drawn by any DC motor is proportional to the
voltage applied
The elctromotive force required to cause a current to flow may be obtained
thermally,mechanically, chemically
The most important reason for using condulet-type fitting in preference to making a bend in a one inch conduit is to________
a. avoid the possible flattening of the conduit when making the bend
b. cut down the amount of conduit needed
c. make a neater job
d. make wire pulling easier
d. make wire pulling easier
Rubber insulation on an electrical conductor would quickly be damaged by continuous contact with _____
a. water
b. acid
c. oil
d. alkali
c. oil
A tester using an ordinary light bulb is commonly used to test _____
a. whether a circuit is AC or DC
b. for polarity of a DC circuit
c. an overloaded circuit
d. for grounds on 120 volt circuits
D.
Pigtails are used on brushes to_______
make a good electrical connection
With respect to flourescent lamps it is correct to state ______
the filaments seldom burn out
An overcurrent trip unit of a circuit shall be connected in series with each______
ungrounded conductor
Electrical current is measured in terms of_______
a. electron pressure
b. electrons passing a point per second
c. watts
d. resistance
B.
A stop switch is wired ______ in a motor circuit
series
a corroded electrical connection connection _______
increases the resistance at the connection
on a delta three phase four-wire secondary, how many hot wires may use the common neutral?
2
It shall be permissible to apply a deman factor of ______ to the nameplate-rating load of four or more appliances fastened in place served by the same feeder in a dwelling.
75%
If you needed to know the provisions for the installations of stationary storage batteries, you would refer to the Article of the Code
4.80
Is it permissible to install direct current and alternating current conductors in the same outlet box?
Yes, if insulated for the maximum voltage of any conductor
