. An elementary book on electricity and magnetism and their applications. ed. We have alreadydiscussed in Chapter XI the two types of storage batteries, thelead cells and the Edison nickel-iron cells. The problem ofthe electric automobile is fundamentally the problem of gettinga cheap, durable, efficient storage battery. Only in large cities 512 ELECTRICITY AND MAGNETISM where electric current may readily be obtained for charg-ing the storage batteries do we see electric automobiles. As a pleasure vehicle the electric automobile has to competewith the gasolene car. The advantages to be claimed
. An elementary book on electricity and magnetism and their applications. ed. We have alreadydiscussed in Chapter XI the two types of storage batteries, thelead cells and the Edison nickel-iron cells. The problem ofthe electric automobile is fundamentally the problem of gettinga cheap, durable, efficient storage battery. Only in large cities 512 ELECTRICITY AND MAGNETISM where electric current may readily be obtained for charg-ing the storage batteries do we see electric automobiles. As a pleasure vehicle the electric automobile has to competewith the gasolene car. The advantages to be claimed for itare its ease of operation and the simplicity of its construction,and its disadvantages are its relatively slow speed, its limitedrange of operation, and its greater first cost. As a commercialvehicle the electric truck has found its widest field of applica-tion in city service where the hauls are of moderate length,say from two to ten miles. All electric passenger cars and most electric trucks are nowequipped with a single motor, which is of the series-type with. Fig. 365. Side view of chassis of electric truck with underslung battery andmotor built into rear axle. four poles usually arranged in two groups which may be con-nected first in series and then in parallel. It is quite commonto build these motors for 80 or 85 volts and to install a batteryof from 40 to 44 lead cells or a 60-cell Edison battery. As inother automobiles the power may be transmitted from themotor to the wheels either by chains or by shaft and battery compartment is usually hung beneath the chassisframe, as shown in figure 365, although some makers place the ELECTRIC TRACTION 513 battery beneath the drivers seat. Improvements in the designand operation of electric vehicles in recent years have been so nu-merous that where electricity can be bought at 3 cents per kilo-watt hour for charging the storage batteries the cost of energyfor a five-ton truck constitutes less than 10 per cent of the
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmagnetism, bookyear19
