Types of ac induction motor rotors.

Stationary armature windings.

Types of ac generators.

Components of a dc generator.

Drum-type armature.

Eddy currents in dc generator armature cores.

Four-pole generator (without armature).

Generator Principle

A thermal time-delay relay.

Clapper-type relay.

Circuit breaker construction.

Open fuse indicators Clip-type fuseholder with an indicating lamp

Typical fuseholders.

Typical fuses and schematic symbols.

Cartridge-tube fuse.

Typical circuit breaker and schematic symbols.

Schematic diagram of an autotransformer.

Schematic diagram of a typical power transformer.

Shell-type core construction.

Hollow-core construction of Transformer

Rotor-stator type variable capacitor.

Construction of an electrolytic capacitor.

Examples of ceramic capacitors.

Typical mica capacitors.

Paper Capacitor

Universal time constant chart for RC and RL circuit.

Inductor types and schematic symbols.

Peak and peak-to-peak values.

Maximum or peak value.

THE POTENTIOMETER AND THE RHEOSTAT

THE POTENTIOMETER AND THE RHEOSTAT are variable resistors and can be adjusted to
any resistance value within their ohmic range. The rheostat is usually used for relatively high current applications and has two connections; the potentiometer has 3 connections and is a relatively high resistance, low-current device.

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