Mechanical Aptitude Questions and Answers 2

Question 1

What simple machine is a screw an example of?

Accepted Answer

An inclined plane wrapped around a cylinder

Answer

A modified lever

Answer

A type of pulley

Answer

A wheel and axle

Question 2

If two gears are meshed and the driver has 15 teeth while the driven has 45 teeth, how many times does the driver rotate for each rotation of the driven gear?

Accepted Answer

3 times

Answer

1 time

Answer

2 times

Answer

4 times

Question 3

What is the difference between speed and velocity?

Accepted Answer

Velocity includes direction, speed does not

Answer

They are identical concepts

Answer

Speed includes direction, velocity does not

Answer

Speed is faster than velocity

Question 4

What keeps a satellite in orbit around Earth?

Accepted Answer

The balance between gravity pulling it inward and its forward velocity

Answer

Rocket engines firing continuously

Answer

The absence of gravity in space

Answer

Magnetic forces from Earth

Question 5

What happens to the volume of a gas when its pressure doubles (at constant temperature)?

Accepted Answer

Volume halves

Answer

Volume doubles

Answer

Volume stays the same

Answer

Volume quadruples

Question 6

What is mechanical resonance?

Accepted Answer

When an external frequency matches an object's natural frequency, causing large oscillations

Answer

The ability of a material to absorb vibration

Answer

The sound produced by metal objects

Answer

The breaking point of a brittle material