LESSON 2 EXERCISES
In each of the following exercises, select the ONE answer that BEST completes the statement or answers the
question. Indicate your solution by circling the letter opposite the correct answers in the subcourse booklet.
One way to simplify the maze of wires used in the telephone system shown in figure 26B is by using a centrally
The transmission lines interconnecting the telephone central offices of different exchanges are called:
The local-battery telephone set shown in figure 28 consists of several closely related circuits. The components
necessary for a complete talking circuit between two telephones include the:
batteries, transmitters, receivers, ringer, and connecting lines.
batteries, ringers, transmitters, receivers, and a generator.
The telephones of a local-battery telephone system contain a dry cell battery. The function of the battery is to:
activate the ringing mechanism.
energize the antisidetone circuit.
provide current to the transmitter.
supply a bias voltage to the receiver.