semplr.

Exams · Certifications · Licensing

ASE Automobile & Light Truck (A1–A8) — Practice Exam

A6 General electrical diagnosis: practice questions

Our ASE A1–A8 bank has 14 questions on this topic. Here are 5 of them with answers; the full mock exam draws from every topic, like the real one.

Start the free mock exam

Question 1 · A6 Electrical/Electronic Systems

What does a relay allow in a circuit?

  1. Voltage to be stepped up for the ignition coil
  2. A low-current switch to control a high-current load
  3. Current to flow in one direction only
  4. A high-current switch to control a small load directly
Show the answer

B. A low-current switch to control a high-current load — Check both the control side and the load side when testing.

Question 2 · A6 Electrical/Electronic Systems

Using Ohm's law, how much current flows through a 6-ohm load on a 12-volt circuit?

  1. 0.5 amps
  2. 2 amps
  3. 6 amps
  4. 72 amps
Show the answer

B. 2 amps — I = E ÷ R = 12 ÷ 6.

Question 3 · A6 Electrical/Electronic Systems

Why should resistance not be measured on a powered circuit?

  1. It gives a reading that is slightly too low but still close enough to use for diagnosis
  2. The meter's reading is invalid and the meter can be damaged
  3. It only matters on AC circuits
  4. It is faster
Show the answer

B. The meter's reading is invalid and the meter can be damaged — An ohmmeter uses its own battery to measure.

Question 4 · A6 Electrical/Electronic Systems

How is a parasitic draw usually traced to a circuit?

  1. Measuring the draw while removing fuses one at a time, or measuring voltage drop across fuses
  2. Load testing the battery at half its CCA rating for fifteen seconds and comparing the voltage
  3. Disconnecting the alternator
  4. Checking the starter draw
Show the answer

A. Measuring the draw while removing fuses one at a time, or measuring voltage drop across fuses — Removing fuses can wake modules, so the voltage drop method avoids that.

Question 5 · A6 Electrical/Electronic Systems

In a parallel circuit, what happens to total current as more branches are added?

  1. It increases
  2. It becomes zero
  3. It decreases
  4. It stays the same
Show the answer

A. It increases — Each branch adds a path for current, lowering total resistance.

More ASE A1–A8 topics