Notes, summaries, assignments, exams, and problems for University

1.      18 Is it a requirement for the ARPA to provide warning on connected external equipment?

Yes

2.      Is it a requirement for an ARPA to be sea and ground stabilised?

Yes

3.      Comparing manual and automatic acquisition, which is most sensitive?

Manual acquisition

4.      What is the difference between a tracking gate and a tracking window?

It is the same thing

5.      What is the purpose of digitizing the radar echoes?

The ARPA tracking system only work with digital signals

6.      What is the purpose of the steady course filter?

Provide stabile target information

7.      Can a target reduction of speed activate the fast filter?

Yes

8.      Can a target course change deactivate the slow filter?

Yes

9.     

4.1 The stages of learning as Dienes
The learning process is a process based on abstraction, generalization and communication. This process of abstraction is to accurately analyze and Dienes identifies six different stages in it:
Stage 1: introduces the individual in the middle => Game Free
2nd stage: review, manipulate, get rules => Structured Games
3rd stage: becoming aware of the common structure to games made
4th stage: representation of the common structure graphically or schematically => Stage representative
5th stage study of the properties of abstract structure, which implies the need to invent a language => Stage symbolic
6th stage: Construction of axioms and theorems => formal Stage
Her pedagogical approach

36.      Does current and drift effect the True vector on a relative motion display?

Yes

2.      If you input gyro course to the ARPA, what can you expect?

Error in other ships calculated course

3.      Why is raster scan display “lock up” so dangerous?

The displayed information is no longer relevant

4.      What is dangerous with operating the ARPA in mixed mode over time?

Forgetting that this actually in mixed mode

5.      What can you expect from the ARPA target tracking system in auto acquisition mode?

Small and weak targets may not be acquired

6.      Doesthe line connecting the PAD or POS whit the target indicate target speed?

No

7.      What is the meaning of a flashing triangle, apex pointing down?

New target

English Grammar Proficiency Exercises

Sentence Correction and Identification

1. By the time we got to the airport, the flight had already left. (C)
2. She went to the concert last night with her friends. (I)
3. The more you practice, the better you speak English. (C)
4. He was wearing a sleeveless blue French shirt and a pair of smart black shoes. (I)
5. They had been waiting for two hours before the airline announced the delay. (I)
6. I have known my best friend since elementary school. (C)
7. While the passengers were boarding, the crew was checking the cabin. (I)
8. If you heat water to 100 degrees, it boils. (I)
9. I will have been studying for three hours by 8 p.m. tonight. (C)
10. She had already left when I called her. (C)
11. She has been working at the airport for three years.

1. Injection Molding

Injection molding is a plastic-shaping process in which molten plastic is injected under high pressure into a mold cavity, where it cools and solidifies to take the shape of the mold.

Construction Components

• Hopper: Funnel-shaped container at the top of the barrel; feeds plastic pellets.
• Barrel: Thin-walled cylinder housing the screw; features multiple heating zones.
• Screw: Comprises three zones—feed, compression, and metering; moves axially.
• Non-return valve: Fitted at the top of the screw.
• Nozzle: Connects the barrel to the mold; controls the flow.
• Cylinder for screw ram: Pushes the screw forward during the injection stroke.
• Stationary platen: Fixed mold-half section.
• Movable platen: Moves forward and backward along the rods

Grinding Process and Wheel Fundamentals

Grinding is a material removal process in which a rotating wheel with abrasive particles removes material from the workpiece surface. The key elements involved include:

• Grinding wheel
• Workpiece
• Relative motion between the tool and workpiece
• Coolant to reduce heat

The grinding wheel rotates at high speed; abrasive particles present on it act as tiny cutting tools, each removing a small amount of material from the workpiece.

Common Types of Grinding Operations

The primary types of grinding include surface grinding, cylindrical grinding, centerless grinding, and internal grinding.

A grinding wheel is a multipoint cutting tool used in the grinding operation to remove material from the workpiece. It consists of abrasive... Continue reading "Precision Grinding Processes and Wheel Wear Mechanisms" »

Reading Comprehension Answer Keys: Set One

Passage 1: The Anasazi

• 1. B) Watered their crops
• 2. D) Holes
• 3. C) Levels
• 4. D) A forty-year-old woman
• 5. B) Crops
• 6. A) Arguments
• 7. A) Making baskets
• 8. B) The political and social organization of the Anasazi
• 9. D) Anasazi society exhibited a well-defined division of labor.

Passage 2: Polyergus and Formica Ants

• 10. A) Ants belonging to the genus Polyergus have an unusual relationship with ants belonging to the genus Formica.
• 11. C) Rear
• 12. C) Are social parasites
• 13. D) Egg
• 14. A) The Polyergus are highly dependent on the Formica.
• 15. C) Raid another nest
• 16. A) Dig
• 17. C) Enlist
• 18. A) The Polyergus and the Formica move to a new nest.
• 19. D) Dulotic species of ants

Passage 3: Ocean Tides and Gravitational Forces

• 20.

Plan and Expressions for Rendering Text

1. The Title of the Article

The plan for rendering the text: The title of the article/text.

Expressions to be used:

• The title of the article (text) is...
• The title of the article (text) under consideration is...
• The text is headlined...
• The headline of the article I have read is...

2. Author and Publication Information

The plan for rendering the text: The author of the article/text; where and when the article/text was published.

Expressions to be used:

• The author of the article/text is...
• The article/text is written by...
• It is (was) published in...
• It is (was) printed in...

3. The Main Idea and Purpose

The plan for rendering the text: The main idea of the article/text.

Expressions to be used:

• The main idea of the article/