Free SDG&E Mechanical Test Blue Battery Practice

This page will help you prepare for the SDG&E Mechanical Assessment. It includes a detailed guide with free Blue Battery Practice questions.

What is the SDG&E Mechanical Test - Blue Battery?

The Mechanical Test—Blue Battery is a part of SDG&E pre-employment assessment and is designed for prospective employers vying for technical and engineering positions. The Blue Battery test offered by SDG&E consists of three sections, measuring candidates' knowledge of mechanics, arithmetic, and symbolic reasoning.

The following is a detailed description of each section:

Mechanical Comprehension Test: This test assesses your knowledge of physical and mechanical concepts as well your ability to apply reasoning in a practical environment. Other topics are electrical circuits, levers, springs, gears, pulleys, and tools. The test evaluates not only your familiarity with these concepts but also your knowledge of their operating principles. Your ability to calculate the force required to operate a particular tool is measured as well.

The Computation Test: This test estimates your knowledge of arithmetic and your ability to perform operations with large numbers without a calculator. Numerical computation questions posed in the test involve basic principles of arithmetic such as addition, subtraction, multiplication, and division. You will also encounter questions that require performing operations with percentages, ratios, fractions, and decimals. It is a multiple-choice test, where each question is supplied with four answers, one of which is correct. Its time limit is five minutes.

The Symbolic Reasoning Test: This test measures how well you manipulate symbols according to formal mathematical and logical rules. It presents applicants with logical propositions that are expressed not verbally but visually, in the form of mathematical problems. It is a multiple-choice test that requires you to select between three alternatives— “True,” “False,” and “Indeterminable.” There are 30 problems in the test, which you need to complete within five minutes.

The Visual Speed and Accuracy Test: This test assesses how quickly and accurately job candidates do tasks that require visual checking of data. It contains exercises that ask them to follow visual schema and check verbal, numerical, and technical information for errors. The test consists of two alpha-numeric strings of characters. Job applicants need to compare the two strings and decide whether they are the same or different. The time limit allotted for this test is only five minutes.

Relevant links

Blue Battery Practice Questions

Mechanical Comprehension Sample Question

If wheels 2 and 3 move in the directions marked in the image, in which direction will wheel 1 move?

A. Right - Clockwise
B. Left - CounterClockWise
C. It will not move.
Correct Answer
Incorrect Answer

The correct answer is (B).

Both wheels 2 and 3 are moving in a clockwise direction, and therefore wheel 1 will move in a counterclockwise direction.

Computation Sample Question

Convert 1.05 to a fraction

A. 100/5
B. 15/10
C. 21/20
D. 105/20
E. 11/10
Correct Answer
Incorrect Answer

The correct answer is C

1.05 = 1 + 0.05

0.05 = 5/100 = 1/20

1.05 = 1 + 1/20 = 20/20 + 1/20 = 21/20.

JobTestPrep's Preparation Service

JobTestPrep has created simulation tests and study guides to assist candidates applying for jobs in engineering and emergency services in succeeding on the Mechanical Test—Blue Battery. Our thoughtfully designed resources improve applicants' knowledge of mechanics and electronics, Numerical Computation skills, Symbolic Reasoning, Visual Speed, and Accuracy.

Visual Speed and Accuracy

Compare 'column 1' with 'column 2' on each row:

If they are identical, mark the green box (under the √ symbol).
If they are different, mark the red box (under the X symbol).



Symbolic Reasoning Sample Question

A < B /< C, therefore A /< C

A. True.
B. False.
C. Cannot Say.
Correct Answer
Incorrect Answer

The correct answer is Cannot Say. We can find at least two sets of numbers that result in a true statement but give different answers (true and false) for the given conclusion. For example, This is the set that is True (1,2,1), and this is the set of numbers that is false (1,2,2) (the sets are of the following format (A,B,C)

How Many Questions Are There on The Mechanical Test?

The Symbolic Reasoning part of the test has 30 problems that you are required to solve within five minutes. Other parts of the test contain numerous questions. You answer as many as you can.

What Is the Passing Score for The Mechanical Test?

Your success on the Mechanical Test—Blue Battery is evaluated by so-called percentile score. This score measures your performance relative to other test takers. Thus, if you receive 79% for your Mechanical test, this does not mean that you have answered 79% of the questions correctly. Your score rather means that you did better on the test than 79% of other job candidates.

How long do I have to wait to retake the Mechanical Test, if I fail it?

The Mechanical Test helps employers measure job candidates’ mechanical aptitude. Every organization has its own examination rules determining how often you can retake the assessment.


JobTestPrep is a leading test prep company that offers accurate practice simulations for hundreds of pre-employment tests. Since 1992, it has helped 1M+ candidates. If you have any additional questions about the Blue Battery Mechanical Test, feel free to send us an email, we usually reply within 24 hours.




SDG&E and other trademarks are the property of their respective trademark holders. None of the trademark holders are affiliated with JobTestPrep or this website.