Free Mechanical Aptitude Question and Answers

Question 1

Which of the following techniques uses a generating process to produce gear?

Accepted Answer

Hobbing

Answer

Punching

Answer

Milling

Answer

Casting

Question 2

Which of the following properties of the working substance will change as a result of reversible heat exchange?

Accepted Answer

Entropy

Answer

Enthalpy

Answer

Temperature

Answer

Internal energy

Question 3

The term for the increase in hardness brought on by cold working is

Accepted Answer

Work hardening

Answer

Age hardening

Answer

Cold hardening

Answer

Hot hardening

Question 4

The machining of continuously formed chips

Accepted Answer

Mild steel

Answer

Aluminum

Answer

Lead

Answer

Cast iron

Question 5

The factors that most affect the cutting tool's tool life are

Accepted Answer

Cutting speed

Answer

Cutting feed and depth

Answer

Microstructure of material being cut

Answer

Tool geometry

Question 6

Using jigs and fixtures is intended to

Accepted Answer

All of the above

Answer

Facilitate interchangeable manufacturing

Answer

Increased machining accuracy

Answer

Increased production rate

Question 7

Draft on casting pattern is

Accepted Answer

Taper to facilitate its removal from mold

Answer

Identification number marked on it

Answer

Increase in size of cavity due to shaking of pattern

Answer

Shrinkage allowance

Question 8

A cylindrical, air-filled, non-pressurized metal tank is submerged under water. The tank gradually sinks farther underwater as the air departs. Which of the following best justifies this motion?

Accepted Answer

Water replaces the air in the tank which makes it heavier

Answer

The bubbles provide a downward thrust on the tank

Answer

The metal increases in density so it gets heavier

Answer

The bubbles lower the density of the water which lowers its buoyancy

Answer

Impossible to tell

Question 9

Two identical automobiles are parked alongside a bridge. Which area(s) of the bridge would experience the highest deflection if it were all the same thickness?

Accepted Answer

Middle of the Bridge

Answer

Below the cars

Answer

Under the towers

Answer

Impossible to tell

Answer

All of the above will have equal defelction

Question 10

Vehicle rearview mirrors are made of convex mirrors. What benefit does utilizing a convex mirror over a flat mirror provide?

Accepted Answer

The wider angle of view reduces blind spots

Answer

A convex mirror provides no advantage

Answer

It provides a clearer reflection

Answer

It has a more accurate reflection

Answer

It is easier to clean a convex mirror