MECHANICAL REASONING EXAM QUESTIONS

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MECHANICAL REASONING EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -42 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: B) Rise in the air

If the man moves to the back of the seesaw, his momentum (weight x distance from the center) will increase. The woman, who is lighter will rise in the air.

Answer:

In the illustration above, if the man backs to the end of the seesaw, the women will

• Remain stationary

• Rise in the air

• Hit the ground hard

• Slide to her end of the seesaw

Question 2: C)C) No. 3

Figure No. 3 has the largest surface area and thus would need the shortest sides. Area is length x width. For No. 3 area= 7ft x 4ft= 28sqft

Answer:

Shown above are the bottoms of four bins for storing materials. If the bins are all capable of holding the same amount of any particular material, then the bin whose sides have the least height is the one whose bottom is shown as

• No. 1

• No. 2

• No. 3

• No. 4

Question 3: B) Relieve the air from steam radiators.

An air valve on a radiator removes air from the steam pipes. If air is trapped in the pipes, it prevents the steam from going to the radiator. This would prevent the radiator from producing heat.

Answer:

The purpose of an air valve in a heating system is to

• Prevent pressure from building up in a room due to the heated air.

• Relieve the air from steam radiators.

• Allow excessive steam pressure in the boiler to escape to the atmosphere.

• Control the temperature in the room.

Question 4: C)Air pressure on top of the liquid

The siphon works, in part, because of air pressure on the top of the liquid.

Answer:

In the illustration above, liquid is being transferred from the barrel to the bucket by

• The vacuum at the lower end of the hose

• The difference between the fluid volumes in the barrel and bucket

• Air pressure on top of the liquid

• Capillary action

Question 5: B)Metal Spoon

Metal will feel coldest out of paper, wood, and the fabric of a blanket.

Answer:

If all of the following objects are at room temperature, which will feel coldest?

• Book

• Metal Spoon

• Wooden Chest

• Blanket

Question 6: A) Provide for changes in length of heated pipe

When steam flows through pipes, it expands. The pipes would burst if extra space were not provided for the expansion and contraction.

Answer:

The main purpose of expansion joints in steam lines is

• Provide for changes in length of heated pipe

• Allow for connection of additional radiators

• Provide locations for valves

• Reduce breakage of pipe due to minor movement of the building frame

Question 7: C) Upward

The centrifugal force acts to pull the balls outward. Since the two balls are connected to a yolk around the center bar, this outward motion pulls the balls upward.

Answer:

The figure above shows a governor on a rotating shaft. As the shaft speeds up, the governor balls will move

• Down

• Upward and Inward

• Upward

• Inward

Question 8: A) .2270

The measurements that can be made on the micrometer are:

• 2 minor divisions and 1 minor division on the ruler type scale, or .2+.025= .225;
• 2 minor divisions above 0 on the rotating scale, or .002. Summing, we find the final

measurement is .225+.002= .227

Answer:

The micrometer above reads

A) .2270

B) .2120

C) .2252

D) .2020

Question 9: B) Bend the strips

The figure shown is a bimetallic strip that works like the wire in a thermostat. High temperatures will cause the metals to heat unevenly. The rivets will keep the strips together, so the only thing that they can do is bend.

Answer:

• The figure above shows a brass and an iron strip continuously riveted together. High temperatures

would probably

• Have no effect at all

• Bend the strips

• Separate the strips

• Shorten the strips

Question 10: D) Find the height of water in the boiler

The try-cocks show the lever of the water inside the boiler. They use the principle that water seeks its own level in a system.

Answer:

The try-cocks of steam boilers are used to

• Act as safety valves

• Empty the boiler of water

• Test steam pressure in the boiler

• Find the height of water in the boiler