465 STANDARD ELECTRICAL DICTIONARY.

Resistance, English Absolute or Foot-Second Unit of.

A unit based on the foot and second. It is equal to (( foot / second ) *

1E7) , being based on these dimensions.

It is equal to 0.30140 legal ohm.

Resistance, Equivalent.

A resistance equivalent to other resistances, which may include

counter-electro-motive force.

Resistance, Essential.

The resistance of the generator in an electric circuit; the same as

internal resistance.

Resistance, External.

In an electric circuit the resistance of the circuit outside of the

generator, or battery.

Synonym--Non-essential Resistance.

Fig. 293. RESISTANCE FRAME.

Resistance Frame.

An open frame filled with resistance coils of iron, or German silver

wire. It is used as a resistance for dynamos and the larger or working

class of plant. The coils are sometimes connected so that by a switch

moving over a row of studs one or more can be thrown into series

according to the stud the switch is in contact with.

Resistance, German Mile Unit of.

The resistance of 8,238 yards of iron wire 1/6 inch in diameter. It is

equal to 56.81 legal ohms.

The Standard Electrical Dictionary A Popular Dictionary of Words and Terms Used in the Practice of Electrical Engineering · 第 504 / 638 题