FREE WTMA Mechanical Comprehension Questions and Answers

Question 1

What is the ratio of the pulling force F to the load L if the weight of each pulley is equal to the load? (F / L =?)

Accepted Answer

1

Answer

1/8

Answer

1/4

Question 2

A force of 1200 N is used to hold a 300 N load. What is the lever's length in meters if the force is acting at a location 25 cm from the fulcrum?

Accepted Answer

1

Answer

100

Answer

0.625

Question 3

Which type of lever is used by the hydraulic crane in the illustration?

Accepted Answer

Third class lever

Answer

Second class lever

Answer

First class lever

Question 4

If one wants to raise the load in the figure by 28 inches, how many inches does one need to draw the rope down?

Accepted Answer

56 in

Answer

28 in

Answer

14 in

Question 5

Which process DOES NOT involve using a magnet?

Accepted Answer

Painting method

Answer

Stroking method

Answer

Electrical method

Question 6

Which of these claims is TRUE?

Accepted Answer

Circular motion is a special case of linear motion

Answer

When linear motion stops, circular motion begins

Answer

Linear motion is a special case of circular motion

Question 7

One or more benefits of a series circuit over a parallel one are as follows:

Accepted Answer

Both It is easier to build up and All circuit elements operate at full capacity

Answer

All circuit elements operate at full capacity

Answer

It is easier to build up

Question 8

A fixed pulley can only change the direction of force; a movable pulley is a basic contraption that reduces the force required to lift a load in half. It is unable to alter the force's size. Compute the mechanical advantage of the system depicted in the following figure in this regard.

Accepted Answer

4

Answer

1

Answer

2

Question 9

What distinguishes a capacitor from a cell, specifically?

Accepted Answer

A cell provides the force needed to make charges flow through the circuit, while a capacitor accumulate charges on its plates

Answer

A cell produce electricity while a capacitor stores it

Answer

A cell stores electricity in the form of chemical energy while a capacitor consumes this electricity

Question 10

What is the number of rotations and direction of the little wheel (B) if the larger wheel (A) rotates three times in a clockwise manner?

Accepted Answer

6 times clockwise

Answer

3 times counter-clockwise

Answer

6 times counter-clockwise