Bennett Mechanical Spatial Reasoning Questions and Answers

Question 1

In the gear system shown, if Gear A rotates clockwise, what will be the direction of rotation for Gear C?

Accepted Answer

Clockwise

Answer

When two external gears mesh, they rotate in opposite directions. Gear A (clockwise) turns Gear B (counter-clockwise). Gear B (counter-clockwise) then turns Gear C (clockwise). Therefore, Gear C rotates in the same direction as Gear A.

Question 2

In the pulley system shown, the belt is crossed. If pulley X is the driver and rotates counter-clockwise, in which direction will pulley Y rotate?

Accepted Answer

Clockwise

Answer

In a pulley system with a crossed (or twisted) belt, the driven pulley always rotates in the opposite direction to the driver pulley. Since pulley X rotates counter-clockwise, pulley Y will rotate clockwise.

Question 3

A standard six-sided die is sitting on a table. The top face shows a '3'. The face pointing towards you shows a '2'. In this orientation, what number is on the bottom face, the one touching the table?

Accepted Answer

4

Answer

On a standard six-sided die, the numbers on opposite faces always add up to 7. Since the top face is a '3', the bottom face must be a '4' (because 3 + 4 = 7). The '2' on the front face is extra information not needed to solve the problem.

Question 4

Water is flowing steadily through a pipe that narrows from a wide section (Section A) to a smaller section (Section B). Assuming the volume of water flowing per second is constant, how does the speed of the water in Section B compare to the speed in Section A?

Accepted Answer

The speed is faster in Section B.

Answer

According to the principle of continuity for fluid flow, the volume flow rate must remain constant. To move the same volume of water through a smaller cross-sectional area (Section B), the water's velocity must increase. Therefore, the water flows faster in the narrower section.

Question 5

A standard bolt with a right-hand thread is being held stationary. To move a nut further *onto* the bolt (away from the head), in which direction must the nut be turned from the perspective of someone looking at the head of the bolt?

Accepted Answer

Clockwise

Answer

This follows the "right-hand rule" for standard threads, often remembered by the mnemonic "righty-tighty, lefty-loosey". To tighten a nut or screw (moving it down the shaft), you turn it clockwise.

Bennett Mechanical Test Practice Test

Bennett Mechanical Test Practice Test

Bennett Mechanical Spatial Reasoning Questions and Answers