Electrician
http://www.electricianapprenticehq.com/aptitude-test-questions/
http://www.okanagan.bc.ca/AssetFactory.aspx?did=1213
https://www.tests.com/practice/Electrician-Math-Practice-Test
https://www.youtube.com/watch?v=KyBEH48Bg6M
http://www.nietc.org/preparing-for-aptitude-interview.html
https://www.mikeholt.com/instructor2/img/product/pdf/1302643872-sample.pdf
https://www.jobtestprep.com/trade-apprenticeship-exam-sample-questions
(includes other trades)
https://www.jobtestprep.com/electrician-apprentice-exam
http://www.ibew34.org/SampleTest/
http://local7jatc.com/sample-test/