Texas Civil Service Exam Mechanical and Spatial Aptitude 5

Question 1

A technician needs to join two metal pipes end-to-end so the connection can be disassembled for maintenance. The best method is:

Accepted Answer

Threaded coupling

Answer

Threaded couplings allow pipes to be connected and disconnected repeatedly without damaging the pipe, making maintenance easy.

Question 2

An L-shaped object is rotated 90° clockwise in your mind. If the long arm initially pointed up and the short arm pointed right, after rotation the long arm points:

Accepted Answer

Right

Answer

Rotating 90° clockwise moves up→right, right→down, so the long arm (originally pointing up) now points right.

Question 3

A pump moves fluid against gravity up a 20-foot pipe. Which factor most directly determines how much power the pump needs?

Accepted Answer

The weight of fluid moved per unit time

Answer

Pump power required = weight flow rate × head (height), so moving heavier fluid or more fluid per minute requires more power.

Question 4

Which of the following is NOT a type of bearing used to reduce friction in rotating machinery?

Accepted Answer

Tension bearing

Answer

Ball, roller, and thrust bearings are all standard bearing types; 'tension bearing' is not a standard classification.

Question 5

A piece of sheet metal is shown flat with a fold line marked. After folding up 90° along the line, a notch that was on the fold line will appear:

Accepted Answer

Split between the top and vertical faces

Answer

A feature on the fold line will be split between both surfaces that meet at that fold, appearing on both faces after bending.

Texas Civil Service Exam Practice Test

Texas Civil Service Exam Practice Test

Texas Civil Service Exam Mechanical and Spatial Aptitude 5