## Principles of Electricity and Electromagnetism |

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Page 387

The frame of the machine, which is of iron or steel, provides a low-reluctance

path for the flux, as

armature rotates. The reluctance of this gap is reduced by winding the armature

on a steel ...

The frame of the machine, which is of iron or steel, provides a low-reluctance

path for the flux, as

**shown**in Fig. 12.7, except for the region in which thearmature rotates. The reluctance of this gap is reduced by winding the armature

on a steel ...

Page 401

Vm, which is

revolution of the synchronous motor. It is

than V„, though this depends on the excitation. The excitation corresponding to

the ...

Vm, which is

**shown**at the angle t — /3, is the back emf. generated by therevolution of the synchronous motor. It is

**shown**in the diagram somewhat shorterthan V„, though this depends on the excitation. The excitation corresponding to

the ...

Page 479

The simplest type of band-pass-filter section is also

bounding frequencies are seen to be (\/2 + 1)«0. wo is written for 1/-^LC and is

seen to be the geometric mean of the bounding frequencies. The attenuation ...

The simplest type of band-pass-filter section is also

**shown**. From Eq. (14.25) thebounding frequencies are seen to be (\/2 + 1)«0. wo is written for 1/-^LC and is

seen to be the geometric mean of the bounding frequencies. The attenuation ...

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alternating current alternating-current ampere amplifier amplitude angle angular anode antenna applied approximately armature assumed atom axis calculated capacity cathode cell characteristic charge circuit coefficient coil component condenser conducting conductor considered constant curl current flowing curve deflection density determined dielectric dielectric constant direct-current direction discharge effective electric field electromagnetic electromotive force electrons electrostatic element energy equal equation flux force frequency function galvanometer given grad grid hence hysteresis impedance induction integral ions known Laplace's equation length linear load magnetic field magnetic induction magnitude maximum measured metal meter negative normal obtained ohms oscillations output parallel phase plane plate polarization positive potential difference potential wave potentiometer produced proportional quantities radiation radius ratio reactance region represents resistance resonant rotation Show shown in Fig solenoid solution surface temperature terminals theorem torque tube unit vector velocity voltage volts wire written zero