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.
The ETA exam has 69 questions and runs 1 hour 37 minutes.
These 10 free ETA questions are organized by exam domain, so you can see how each part of the Electrical Training Alliance Aptitude Test blueprint is tested. Reveal the answer and explanation under each question.
A calibration procedure defines V = (p^2 - q) / r. The procedure requires the final p reading, the baseline q reading, and the stated r value. For one unit, baseline q = 7, initial p = -2, final p = -5, and r = 3. A unit is rejected when V is 5 or less, adjusted and retested when V is greater than 5 but less than 7, and accepted when V is 7 or greater. Which classification applies?
Correct answer: C - Adjust and retest; V = 6
Consider the expression -3(2x - 5) + (x - 4)(x + 2). Which simplified expression is equivalent to it for every value of x?
Correct answer: D - x^2 - 8x + 7
In the sequence 3, 10, 6, 13, 12, 16, 24, ..., each odd-positioned term is twice the preceding odd-positioned term, and each even-positioned term is 3 more than the preceding even-positioned term. Which pair gives the eighth and ninth terms, in that order?
Correct answer: C - 19, 48
A deviation index is defined by D = -kt + c, where k and c are positive. Under which condition is D negative?
Correct answer: B - t > c/k
Which verbal rule is exactly equivalent to y = -3x + 2?
Correct answer: A - Multiply the input by -3, then add 2
At a cable-insulation test bay, indicator codes determine the required response. A green light permits normal testing. Amber code A17 signals a temporary airflow warning; the operator may continue only after recording A17 and confirming that both the exhaust fan and the barrier interlock are active. Amber code A22 requires the operator to pause and obtain supervisor authorization before restarting. A red light, smoke or a burning odor, or an inactive interlock requires the emergency disconnect to be pressed and the bay to be cleared. A17 events are reviewed by the supervisor at the end of the shift, so advance approval is not required. During a test, the indicator turns amber and shows A17. The fan and interlock are active, and there is no smoke or unusual odor. What should the operator do next?
Correct answer: A - Record code A17 and continue the test
A portable bending unit can stop in four distinct ways. During a supply interruption, its display goes dark, no code remains visible, and restart is available after a 10-second power check. During a thermal safeguard stop, the display stays lit with code H1, the cooling fan keeps running, and restart remains locked for at least four minutes. Jam protection leaves the display lit with code J3 and requires material to be removed before reset. Releasing the operating control leaves the display lit with no code and allows an immediate restart. In one incident, the display remained lit with H1, the fan continued to run, no material was obstructing the unit, and restart was unavailable for five minutes. Which cause best accounts for the stop?
Correct answer: B - The thermal safeguard
A fabrication shop tested a new set of visual work instructions during a four-week pilot on one of its three production lines. In the four weeks before the pilot, jobs on that line took an average of 42 minutes. During the pilot, the average fell to 34 minutes. Two other conditions changed at the same time: an experienced operator transferred to the pilot line, and the dispatcher assigned that line smaller orders than usual. The machines, shift length, inspection standard, and preventive-maintenance schedule stayed the same. The defect rate moved from 3.2% before the pilot to 3.1% during it, a difference the team treated as no material change. The other two production lines continued handling their usual product mix and sometimes used overtime, so neither served as a matched comparison. Orders were not assigned randomly, and the shop did not test the instructions in a separate phase from the operator transfer or the smaller orders. Eight of ten operators said the new instructions were clearer, but the team noted that this opinion did not identify the cause of the faster completion times. The manager said the result justified a larger controlled study, but the pilot could not determine which concurrent change produced the reduction. Which conclusion is best supported?
Correct answer: A - Completion time fell during the pilot, but the cause was not isolated
A maintenance group ranks equipment with an Inspection Priority Score from 0 to 100. The score already incorporates operating hours, failure history, and condition observations. Scores from 0 through 24 receive the routine annual review; 25 through 49 require review within 90 days; 50 through 74 require an inspection within 30 days; and 75 through 100 require an inspection within 24 hours. Visible arcing is the only listed override: it bypasses the score and requires immediate shutdown. Heavy use by itself does not create an additional response because it is already included in the score. After the underlying data are verified, a heavily used unit receives a score of 68. It shows no visible arcing and is operating steadily. What response does the scale require?
Correct answer: D - Schedule an inspection within 30 days
A warehouse handling chart assigns controls independently. Fragile packages require two handlers. Packages with a labeled gross weight of more than 20 kilograms require a cart. Packages containing a liquid chemical require a sealed tray, and packages with torn outer wrapping require supervisor approval before movement. When more than one condition applies, every triggered control is used; controls tied to conditions that are absent are not added. The chart uses the labeled gross weight, so staff do not subtract the package or wrapping weight. Package R is marked fragile and has a labeled gross weight of 24 kilograms. Its contents are dry ceramic components rather than a liquid, its outer wrapping is intact, and no other condition is marked. Which handling plan satisfies every stated requirement without adding an unnecessary control?
Correct answer: C - Two handlers and a cart
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