Ramsay Test Mechanical Aptitude 5

Question 1

A worm gear driving a spur gear is commonly used because it provides:

Accepted Answer

A large gear reduction and high torque

Answer

Worm gears give a large speed reduction and high torque, often with a self-locking feature.

Question 2

In an electrical circuit, increasing the resistance while voltage stays constant will cause the current to:

Accepted Answer

Decrease

Answer

By Ohm's law, higher resistance at constant voltage results in lower current.

Question 3

Which arrangement of two springs supporting a load gives the LEAST total stretch?

Accepted Answer

Two springs in parallel (side by side)

Answer

Springs in parallel share the load and stiffen the system, giving the least stretch.

Question 4

A wheel and axle works as a force multiplier when force is applied to the:

Accepted Answer

Large wheel to turn the small axle

Answer

Applying force to the large wheel to turn the smaller axle multiplies the output force.

Question 5

Cooling a sealed container of gas while keeping its volume fixed will cause the gas pressure to:

Accepted Answer

Decrease

Answer

At fixed volume, lowering temperature reduces gas pressure, per Gay-Lussac's law.

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