4AE3 U3 C1 QUZKECKO Medium Test
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Questions and Answers

Which of the following is NOT a fuel that can be used in a steam boiler?

  • Fuel oil
  • Natural gas
  • Wood
  • Electricity (correct)

Which of the following is a characteristic of a good heat transfer fluid?

  • It should be electrically conductive
  • It should have a high boiling point
  • It should be non-toxic (correct)
  • It should be transparent

Why is steam an effective heat transfer fluid?

  • It is transparent
  • It is electrically conductive
  • It has a high boiling point
  • It can transfer a lot of heat with a small mass (correct)

What is the volume expansion of steam compared to water at 100 degrees Celsius?

<p>About 1600 times (A)</p> Signup and view all the answers

Which component of the steam cycle is responsible for condensing the steam?

<p>Heat exchanger (B)</p> Signup and view all the answers

What happens if the steam does not spend enough time in the heat exchanger?

<p>It flows directly to the condensate tank (D)</p> Signup and view all the answers

Which of the following is a primary duty of Power Engineers?

<p>Producing steam (C)</p> Signup and view all the answers

Why is steam important in industrial processes?

<p>It expands to several hundred times its volume (A)</p> Signup and view all the answers

How does water compare to other heat transfer fluids?

<p>It is a good heat transfer fluid (C)</p> Signup and view all the answers

What is the main purpose of a steam trap in a unit heater?

<p>To prevent the heater from filling up with condensate (A)</p> Signup and view all the answers

What is the function of a steam cycle in a boiler system?

<p>To transfer heat energy from steam to machinery (D)</p> Signup and view all the answers

Which component of the steam cycle is responsible for venting the steam to atmosphere?

<p>Condensate tank (A)</p> Signup and view all the answers

What is the purpose of the condensate tank in the steam cycle?

<p>To collect condensate (D)</p> Signup and view all the answers

What is the main difference between a basic process steam system and a more complex energy plant?

<p>All of the above (D)</p> Signup and view all the answers

Which of the following is NOT wasted when the steam is vented to atmosphere?

<p>Electricity (C)</p> Signup and view all the answers

Which of the following is a key responsibility of Power Engineers?

<p>Operating and maintaining power plant equipment (B)</p> Signup and view all the answers

What is the role of Power Engineers in large plants?

<p>Supervising others to operate a shift (D)</p> Signup and view all the answers

What knowledge and abilities make Power Engineers ideal candidates for operating sophisticated processes and equipment?

<p>Skilled and knowledgeable workers (D)</p> Signup and view all the answers

What must Power Engineers do when operating, testing, maintaining, or repairing equipment?

<p>Strictly adhere to site-specific policies and procedure manuals (D)</p> Signup and view all the answers

What must all Power Engineers be able to do?

<p>Identify process abnormalities (C)</p> Signup and view all the answers

What is the historical significance of the royal proclamation by Edward I of England in 1306?

<p>It prohibited the use of sea coals in furnaces (A)</p> Signup and view all the answers

What was the original purpose of steam engines when they were first invented?

<p>To increase mine output by removing water from mines (C)</p> Signup and view all the answers

Which of the following is NOT a responsibility of Power Engineers in modern plants?

<p>Enforcing environmental regulations (A)</p> Signup and view all the answers

What is the nature of the work for Power Engineers in small plants?

<p>All of the above (D)</p> Signup and view all the answers

Which of the following is NOT a responsibility of Power Engineers in smaller plants?

<p>Hiring staff (D)</p> Signup and view all the answers

Which of the following is NOT a potential danger associated with mishandling large amounts of energy?

<p>Higher fuel consumption (B)</p> Signup and view all the answers

Which of the following is a benefit of efficient energy conversion?

<p>Reduced stack emissions (D)</p> Signup and view all the answers

What is one of the recommendations for maintaining good personal habits for shift workers?

<p>Blocking out light during sleep periods (B)</p> Signup and view all the answers

What is one of the work habits that can promote a culture of looking out for each other among shift workers?

<p>Encouraging team activities and interaction between workers (C)</p> Signup and view all the answers

What symptoms can shift workers experience due to sleep deprivation?

<p>Upset stomach and lack of freshness after sleep (A)</p> Signup and view all the answers

Which of the following is a potential challenge faced by Power Engineers working in facilities that require continuous operation?

<p>Exposure to hazardous materials (B)</p> Signup and view all the answers

What can happen to work performance when Power Engineers are placed on a shift schedule?

<p>Deterioration can occur soon after (A)</p> Signup and view all the answers

Why is it important for Power Engineers to understand how shift work affects their lives outside of work?

<p>To make necessary lifestyle adjustments (A)</p> Signup and view all the answers

What are some of the adverse conditions that Power Engineers may be exposed to while operating plants?

<p>Temperature extremes, high humidity, and hazardous environments (A)</p> Signup and view all the answers

What are some baseline requirements for Power Engineers to fulfill their role?

<p>Being knowledgeable and alert (C)</p> Signup and view all the answers

What is the impact of shift work on a Power Engineer's working and non-working life?

<p>It can cause disruptions to sleep patterns and potential stresses on health, family, and social commitments. (C)</p> Signup and view all the answers

What is the circadian rhythm?

<p>The natural, individual cycle of being tired and energized around the same time each day. (B)</p> Signup and view all the answers

What problems can occur when the working day does not match the body's circadian day?

<p>Reduced sleep duration and symptoms of insomnia. (B)</p> Signup and view all the answers

What is a common piece of advice for shift workers regarding meal schedules?

<p>Plan meals to help stay awake and alert during working hours, and asleep when at home. (C)</p> Signup and view all the answers

What health issues are shift workers more likely to suffer from compared to non-shift workers?

<p>Infertility and heart disease. (B)</p> Signup and view all the answers

What is the temperature of superheated steam?

<p>500°C (A)</p> Signup and view all the answers

What is the purpose of pressurizing and heating potatoes with steam in the food industry?

<p>To remove the skin (D)</p> Signup and view all the answers

What is the primary function of steam in absorption refrigeration cooling systems?

<p>To drive the refrigerant through the cooling cycle (D)</p> Signup and view all the answers

What happens to the steam in the steam cycle after it gives off heat in a unit heater?

<p>It condenses back into water (D)</p> Signup and view all the answers

What is the purpose of a steam trap in a unit heater?

<p>To regulate the flow of steam (C)</p> Signup and view all the answers

Which component of the steam cycle is responsible for preventing the steam from venting to atmosphere?

<p>Condensate tank (B)</p> Signup and view all the answers

What happens to the steam in the heat exchanger in a typical steam cycle?

<p>It flows directly to the condensate tank (D)</p> Signup and view all the answers

What is the purpose of the condensate tank in the steam cycle?

<p>To collect and cool the condensed steam (C)</p> Signup and view all the answers

What is the main difference between a basic process steam system and a more complex energy plant?

<p>The multiple steam-consuming processes (C)</p> Signup and view all the answers

What are the potential consequences of the steam venting to atmosphere?

<p>Wasting heat and water (A)</p> Signup and view all the answers

Which of the following is a characteristic of steam as a heat transfer fluid?

<p>It expands to several hundred times its volume when converted to steam (C)</p> Signup and view all the answers

What is the primary reason why industry uses steam as a heat transfer fluid?

<p>To transfer heat energy effectively (A)</p> Signup and view all the answers

Why is water (especially in the form of steam) considered an ideal heat transfer fluid?

<p>It expands to several hundred times its volume when converted to steam (D)</p> Signup and view all the answers

What is the main difference between a basic process steam system and a more complex energy plant?

<p>The complexity of the equipment and processes involved (B)</p> Signup and view all the answers

What is the purpose of a steam cycle in a boiler system?

<p>To control the equipment that produces and consumes steam (A)</p> Signup and view all the answers

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