The Signal Maintainer Passbook(R) prepares you for your test by allowing you to take practice exams in the subjects you need to study. It provides hundreds of questions and answers in the areas that will likely be covered on your upcoming exam, including but not limited to: installation, maintenance and repair of electrical, electronic and electro-mechanical systems; electrical theory and principles; technical drawings; safety and emergency procedures; tools and equipment; shop mathematics; and more.
