EIAT Mechanical Aptitude Test Guide (Updated for 2024)

What Is the Mechanical Section of the EIAT Test?

The EIAT Mechanical Aptitude section contains 25-35 questions that cover 3 main topics:

  • Gears
  • Wheels and Pulleys
  • Force and Torque

The entire EIAT test has a limited time of around 1.5, so it takes approximately 30 minutes to complete this section. 


The Gears questions require basic knowledge of physical principles that work on gears.

To receive a high score in the Gears questions, you need to understand how the whole system works together and how each cog's movement affects the other parts of the system.

Gears Sample Question

In which direction does the grey wheel turn? (If neither, mark C.)

EIAT Gears Sample Question
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Incorrect Answer

When contact is made between the rack (toothed belt) and the cogwheels, a conversion from a linear velocity to an angular velocity occurs. The location of the point of contact is critical.

The point of contact between the red cogwheel and the rack is in the lower part of the red cogwheel. The counterclockwise angular velocity induces a linear velocity to the right.

The point of contact between the grey cogwheel and the rack is in the grey cogwheel's upper part. The linear velocity to the right (determined by the rack) induces an angular velocity in a clockwise direction. 

Wheels and Pulleys

The Wheels and Pulleys questions require understanding the basic mechanism rules of these elements.

To answer these questions, you need to comprehend the relationships between speed and size, linear- rotational velocity, force reduction, etc.

Wheels and Pulleys Sample Question #1

 In which direction will the wheel spin? (If neither, mark C.)

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Correct Answer
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A band connects the two wheels on the left. The clockwise rotation of the initial wheel (blue arrow) determines the movement of the band, which, in turn, rotates the top wheel counterclockwise. That is because the band is crossed.

The two wheels at the top are connected by a rod; thus, both rotate in the same direction. The wheel in question is connected by a straight band to the top right wheel, and will therefore rotate in the same direction - namely, counterclockwise.

EIAT Wheels and Pulleys Sample Question #2

Which bicycle wheel turns faster? If they both have the same turn rate then please select answer 3.

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Both bicycle wheels are connected to the same axis (the bicycle) and, therefore, the distance they must pass during the same amount of time is equal

Yet, the speed at which they do it differs: The smaller the circumference of the wheel the more rotations it will have to complete in order to pass the same stretch of road. Since wheel 1 is the smaller wheel it must turn faster to 'keep up' with the bigger wheel (wheel 2).

The correct answer is 1

Force and Torque

The Force and Torque questions require knowledge about things like force equilibrium, law of the lever, and (rarely) torque calculation. This is probably the most versatile part of the entire section. However, though coming in many shapes and sizes, the questions here are actually based on a very small number of physical principles.

EIAT Force and Torque Sample Question

In which direction should the acrobat move his body to balance the seesaw? (If neither, Mark C.)

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A seesaw is an example of a first-class lever, where the fulcrum is between the effort and load.

For the seesaw to be balanced, the torque applied by the acrobat must increase. Since the acrobat's weight is constant, the only way to increase the input torque is by increasing the distance from the fulcrum.

Moving in direction B will shift the acrobat’s center of gravity farther from the fulcrum, resulting in greater torque, thereby balancing it.

Tips to Pass Your EIAT Mechanical Aptitude Test

Preparedness is key when applying for any job, this one is no exception. Studying beforehand for the different sections of the aptitude test, as well as for the oral interview, will give you the edge over other candidates! Here are a few helpful tips:

  • Focus on learning physical principles rather than case-by-case questions – as it is the only way to make sure you will solve ANY mechanical question. To learn more about the importance of physical principles, check out our Complete Mechanical Aptitude Guide.
  • Read the instructions carefully, and ensure you understand the questions and how to figure out the answers - With that said, because the EIAT score is based only on the number of correct answers, it is better to guess and move on than to leave a question unanswered
  • Live on the edge! – when not sure of the effect, consider the extreme case. For example, if the question is whether it’s harder to row with a short or a long paddle, think of a 1-mile vs. a 1-inch paddle.

Learn more tips on acing the Mechanical Aptitude Questions.

The Complete EIAT Test Preparation Pack


The Most Accurate EIAT Mechanical Aptitude Practice Tests with 2 full-length EIAT test simulations and 5 additional Mechanical Aptitude practice drills.

Study guide that cover all the topics of the EIAT Mechanical Aptitude section.

Detailed answers and explanations to all the Mechanical Aptitude practice questions.


You can also check out our Complete PDF EIAT Test and take a free EIAT sample test.

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