# FREE WTMA Aptitude Knowledge Questions and Answers

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#### What type of energy is stored in a stretched rubber band?

Correct! Wrong!

When a rubber band is stretched, it stores potential energy due to its stretched position.

#### If a gear with 24 teeth meshes with a gear with 12 teeth, how many times does the smaller gear have to rotate to make the larger gear complete one rotate?

Correct! Wrong!

The gear with 12 teeth will have to rotate twice to make the larger gear complete one rotation due to the difference in the number of teeth.

#### Which of the following materials is a good insulator?

Correct! Wrong!

Rubber is a good insulator, unlike aluminum, copper, or silver.

#### Which of the following is an example of a second-class lever?

Correct! Wrong!

In a second-class lever, the load is between the fulcrum and the effort, like in a wheelbarrow

#### What is the SI unit of force?

Correct! Wrong!

The SI unit of force is the Newton (N).

#### What is the formula for calculating work?

Correct! Wrong!

Work is calculated by multiplying force by distance.

#### Which of the following simple machines is used to lift heavy objects vertically?

Correct! Wrong!

A pulley is a simple machine that consists of a wheel with a groove around its circumference and a rope or belt that moves in the groove. It is commonly used to lift heavy objects vertically by applying force downward.

#### Which of the following is a measure of electrical resistance?

Correct! Wrong!

Ohm is the unit electrical resistance, measured in ohms (Ω).

Correct! Wrong!

#### Which of the following is a conductor of electricity?

Correct! Wrong!

Copper is a good conductor of electricity, unlike rubber, glass, or wood.

#### Which of the following is NOT a simple machine?

Correct! Wrong!

A light bulb is an example of an electrical device, not a simple machine.