10 exam-style questions with answers and explanations, straight from our 1,030-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
These 10 free PET questions are organized by exam domain, so you can see how each part of the Precision Electrical Termination Certification (PET) blueprint is tested. Reveal the answer and explanation under each question.
An uninsulated lug has a closed eye that fits over a stud. At its wire end, two forming wings fold around the stripped conductor. For selecting the crimp tooling, this terminal is classified as a:
Correct answer: D - Ring terminal with an open barrel.
Two size 22 pins are approved for a connector cavity: M39029/58-360 accepts AWG 22-28, and M39029/58-361 accepts AWG 24-28. An AWG 22 replacement lead is about to be crimped into a loose contact whose bands, read from barrel toward mating tip, are orange, blue, and brown. What is the correct preparation decision?
Correct answer: D - Use M39029/58-360 with the matching AWG 22 tooling.
A new open-barrel crimp setup gives slightly lower electrical resistance but reduced pull strength. Crimp height, measured correctly at the center, is below its approved range, and flash has increased symmetrically. Uncrimped stripped samples have intact strands; the tensile-test grips do not slip. Which fault best fits the combined findings?
Correct answer: B - Excessive compression damaging strands inside the barrel.
An open-barrel terminal's recorded pull-test peak exceeds the required conductor-crimp force. Video shows the conductor sliding inside the barrel before that peak, while the separate insulation support remains engaged until it tears. The force when conductor movement began was not recorded. What can be concluded from the recorded peak?
Correct answer: A - It does not establish conductor-crimp strength; repeat without insulation-support loading.
A termination carrying 10 A has a resistance of 20 mΩ. A proposed change would carry a steady 16 A through a replacement measuring 10 mΩ. The allowable resistive loss at this location is 2.4 W. Using P = I²R and treating resistance as constant for this comparison, which assessment of the proposed change is correct?
Correct answer: A - 2.56 W; the proposed change exceeds the loss allowance.
An AWG 22 lead with an M39029/58-363 contact requires AFM8/K43 at selector 5 or AF8/TH163 with the red insert at selector 2. The AF8 passes its G125 check at selector 4. The technician then selects the red insert but copies selector 5 from the AFM8 setup. Relative to the required AF8 setup, what changes?
Correct answer: A - A larger closed opening, with the same axial crimp location.
A technician is about to connect an ohmmeter across a suspect harness termination. The main supply is disconnected, but a battery backup still energizes the circuit containing the test points. Before making the resistance measurement, the technician should:
Correct answer: C - Isolate the backup source and verify absence of voltage at the test points.
A circuit opens when its connector's wire bundle moves rearward. Inspection shows that one pin backs out of its retained position in the insert while its wire remains firmly crimped in the barrel. Pressing the pin forward restores continuity. Which interface has lost mechanical restraint?
Correct answer: C - The contact-to-insert retention interface.
Firm resistance is felt while advancing the specified removal tool around a minimum-diameter wire in a rear-release DEUTSCH 38999 contact. The contact remains locked. The tool may have stopped against the rear of the crimp barrel. What engagement must be established before applying extraction force?
Correct answer: D - The tool tip is fully engaged at the contact shoulder.
An AF8 is fully closed at selector 4 and held under firm hand pressure for a check with a clean, undamaged G125 gauge. GO passes freely. NO-GO enters partway but will not pass completely through the indenter opening. Which entry belongs in the closure-verification record?
Correct answer: B - Passed; the required GO and NO-GO conditions are met.
The PET exam also covers these domains. Drill them in the full free practice test:
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