Which theory of electrical current flow states that current flows from a negative location to a positive location in an electrical circuit?

Technician A says that all electrons are alike regardless of the atomic element. Technician B says that all protons are alike regardless of the atomic element. Who is right?

How many electrons are in the outer shell of a semiconductor?

Vehicle wiring schematics use which theory of current flow almost exclusively?

As the electrons of an atom orbit its nucleus, what prevents them from colliding?

Which of the following devices does NOT rely upon the principles of electromagnetism to function?

Which of the following circuits has only one path for current to flow?

In which of the following circuits would current flow be the same at any point in the circuit when it is energized?

Which type of circuit has multiple paths for current flow?

How many volts are required to push 3 amps through a resistance of 4 ohms?

A series circuit has a 12-volt power source and two resistors of 1 ohm and 2 ohms respectively. How many amps will flow when the circuit is closed?

If an additional current path is added to a circuit what must happen to total circuit resistance?

If a terminal has a deficit of electrons, it would be known as a:

Technician A says that a cathode has an excess of electrons. Technician B says when a cathode is connected to an anode by a conductor, electrons will flow from the cathode to the anode. Who is right?

What is visible light, such as that radiated by a light bulb, known as?

Technician A says that battery gassing produces an explosive mixture of hydrogen and oxygen and that great care should be taken any time a battery is being charged. Technician B says that gassing occurs only during battery discharge cycles on maintenance-free batteries. Who is right?

Who invented the first battery?

Technician A says that excessive vibration can shorten the life of a lead-acid battery by shaking the active material from the plates. Technician B says that modern truck batteries are designed to sustain high levels of vibration and this seldom causes premature failures. Who is right?

When load-testing a lead-acid battery, which of the following would be the recommended load to be drawn by the carbon pile?

Technician A says that a defective voltage regulator can result in overcharging the batteries. Technician B says that when batteries are overcharged, they can boil off electrolyte. Who is correct?

Which of the following conditions could result in an undercharged batteries?

What electrolyte is used in a vehicle lead-acid battery?

What electrolyte specific gravity measured at 80 degrees Fahrenheit should indicate that a lead-acid battery is fully charged?

Technician A says that adding pure sulfuric acid to a discharged lead-acid battery is a recommended means of reducing the time required to charge it. Technician B says that it is acceptable to add tap water to top-up the electrolyte in a lead-acid battery. Who is right?

Which of the following is an advantage of a maintenance-free lead acid battery compared with a similarly sized and rated standard battery?

What is the role played by a battery described as an isolated battery in a truck electrical system?

Which of the following battery types can best sustain repeated deep-cycling?

What is the primary method of rating current truck lead-acid batteries?

What temperature is the cold cranking amp capability of a lead-acid based on?

Which of the following would be a consequence of reversing the polarity of a battery bank on truck electrical system?

When load testing a fully charged, lead-acid battery at 80 degrees Fahrenheit at one half the rated CCA for 15 seconds, what is the lowest acceptable voltage during the test?

If you suspect that a lead-acid battery has frozen, what should you do first?

What is the main advantage of modern battery conductance test instruments?

Technician A says that used batteries can be disposed of in the garbage providing the electrolyte is removed first. Technician B says that battery vendors are usually required by law to receive as many batteries for recycling as they sell. Who is right?

How are the stator windings in a typical truck alternator configured?

Which of the following sets of voltage range specifications indicates that a typical truck voltage regulator is functioning properly?

Which of the following conditions will shorten the life of batteries?

Which stator windings are connected in series and have a neutral junction?

What specific component on a truck charging system does an AC leakage test evaluate?

What is the maximum acceptable AC leakage specification in a typical truck charging system?

Which of the following alternator failure could result in undercharging?

When does an energized diesel engine cranking motor produce peak torque?

What is the function of the overrunning clutch in a starter drive assembly?

Which of the following cranking circuit faults could cause slow cranking?

When performing voltage drop testing through the ground circuit of a starter motor you record a voltage loss of 0.6 V-DC. What should be done first?

When performing voltage drop testing on cranking circuit components on a 12-volt chassis, which DMM V-DC range would provide accurate results?

When a diesel engine fails to start after 30 seconds of cranking, what is the recommended cool down period before cranking the engine again?

If you are bypassing a starter relay switch using a jumper wire, what component is being tested?

What percentage of starter motors returned under warranty are tested to perform to specification by the OEM?