Free EIAT Mechanical Question and Answers

Which way is the wheel going to turn? (Mark C if neither.)

A

B

C

Correct! Wrong!

Explanation:
The leftmost two wheels are connected by a band. The band moves in response to the clockwise rotation of the bottom wheel (blue arrow), which in turn causes the top wheel to rotate counterclockwise. The band is crossed, which is why.

Due to the rod connecting the two wheels at the top, they both rotate in the same direction. The aforementioned wheel will rotate counterclockwise because it is connected by a straight band to the wheel at the top right.

A 24 cm converging lens is 12 cm away from an object that is 10 cm high. How high is the image this lens creates?

10 cm

20 cm

5 cm

None of the above

Correct! Wrong!

What are the differences between gear 3's rotational direction and speed (angular velocity) and gear 1's?

Both gears revolve at the same angular velocity and in the same direction

Gear 3 rotates slower than gear 1 and both rotate in the same direction

Gear 3 rotates faster and in the opposite direction to gear 1

None of the above

Correct! Wrong!

A 40cm spring suspended on a hook 1.2m above the ground has a constant 2000 N/m force. At the spring's low point, a solid sphere with a 5 cm radius is suspended. What is the solid sphere's maximum weight without touching the ground?

1400 N

1600 N

1500 N

None of the above

Correct! Wrong!

As seen in the illustration, three identically sized balls made of the materials K, L, and M are floating in the water. The items are being acted upon by buoyant forces FK, FL, and FM.

Which of the aforementioned statements about these forces is true?

F_{b (L)} > F_{b (M)} > F_{b (K)}

Fb (K) = Fb (L) = Fb (M)

Fb (K) > Fb (M) > Fb (L)

None of the above

Correct! Wrong!

Which way does the grey wheel rotate? (Mark C if neither.)

A

B

C

Correct! Wrong!

Explanation:
A linear velocity changes to an angular velocity when the rack (toothed belt) comes into contact with the cogwheels. The point of contact's location is crucial.

The lower portion of the red cogwheel is where it comes into contact with the rack. The linear velocity to the right is induced by the counterclockwise angular velocity.

The upper portion of the grey cogwheel is where it comes into contact with the rack. The rack-determined linear velocity to the right causes a clockwise-moving angular velocity.

There is a whistle from a railroad. 5 seconds later, there is an echo. How far away is the reflecting surface if the speed of sound is 343 m/s?

857.5 m

1715 m

137.2 m

None of the above

Correct! Wrong!

FREE EIAT Mechanical Question and Answers

Which way is the wheel going to turn? (Mark C if neither.)

A 24 cm converging lens is 12 cm away from an object that is 10 cm high. How high is the image this lens creates?

What are the differences between gear 3's rotational direction and speed (angular velocity) and gear 1's?

A 40cm spring suspended on a hook 1.2m above the ground has a constant 2000 N/m force. At the spring's low point, a solid sphere with a 5 cm radius is suspended. What is the solid sphere's maximum weight without touching the ground?

As seen in the illustration, three identically sized balls made of the materials K, L, and M are floating in the water. The items are being acted upon by buoyant forces FK, FL, and FM. Which of the aforementioned statements about these forces is true?

Which way does the grey wheel rotate? (Mark C if neither.)

There is a whistle from a railroad. 5 seconds later, there is an echo. How far away is the reflecting surface if the speed of sound is 343 m/s?

Related Post

As seen in the illustration, three identically sized balls made of the materials K, L, and M are floating in the water. The items are being acted upon by buoyant forces FK, FL, and FM.

Which of the aforementioned statements about these forces is true?