Thermodynamics Chapter 1 Quiz

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

A vacuum gage connected to a chamber reads 5.88 psi at a location where the atmospheric pressure is 14.5 psi. Determine the absolute pressure in the chamber.

14.5 psi + 5.88 psi = 20.38 psi

A 3-kg plastic tank that has a volume of 0.2 m³ is filled with liquid water. Assuming the density of water is 1000 kg/m³, determine the weight of the combined system.

The mass of water is density * volume = 1000 kg/m³ * 0.2 m³ = 200 kg. The total mass of the system is 3 kg + 200 kg = 203 kg. The weight of the system = mg = 203 kg*9.8 m/s² = 1989.4 N. The answer must be in Newtons.

Consider an alcohol and a mercury thermometer that read exactly 0°C at the ice point and 100°C at the steam point. Equal parts in both thermometers do you think these thermometers will give exactly the same reading at a temperature of, say, 60°C? Explain.

False (B)

Flashcards

What is the LG EasyLoadâ„¢ feature?

The LG EasyLoadâ„¢ feature allows you to open the dryer door from the top, hamper-style, when loading the dryer to help guide clothes into the drum and prevent them from falling onto the floor. When unloading the dryer or loading bulkier items, use the swing door for easy access to the drum.

What is the Flow Senseâ„¢ duct blockage sensing system?

The Flow Senseâ„¢ duct blockage sensing system detects and alerts you to restrictions in the installed household ductwork that reduce exhaust airflow through the dryer. If you see the alert: Clean or repair the ducts to remove the restrictions. Keep your ducts free of blockage to help increase efficiency and reduce long drying times caused by blocked ducts.

What are the Steam Functions?

LG's steam technology allows you to inject fabrics with a swirling jet of steam to refresh clothes, reduce static, and make ironing easier. Simply select the Steam Freshâ„¢ cycle or Wrinkle Care cycle.

Why is leveling the dryer important?

The dryer must be level, with a maximum slope of 1 inch (2.5 cm) under the entire dryer. Clothes may not tumble properly, and automatic sensor cycles may not operate correctly if the dryer is not level.

Signup and view all the flashcards

What are some important safety precautions when venting the dryer?

Use a heavy metal vent. Do not use plastic or thin foil ducts. Clean old ducts before installing this dryer. To reduce the risk of injury to persons, adhere to all industry recommended safety procedures including the use of long-sleeved gloves and safety glasses. Failure to follow all of the safety warnings in this manual could result in property damage, injury to persons, or death.

Signup and view all the flashcards

When choosing the installation location, what weight needs to be considered?

The combined weight of a companion appliance should also be considered.

Signup and view all the flashcards

What is needed for connecting an electric dryer?

A grounded electrical outlet located within 2 ft. (61 cm) of either side of the dryer.

Signup and view all the flashcards

What is the proper way to connect the dryer to a power outlet?

The dryer should always be plugged into its own individual electrical outlet which has a voltage rating that matches the rating plate.

Signup and view all the flashcards

What type of items should not be placed in the dryer?

Do not place items exposed to cooking oils in your dryer. Items contaminated with cooking oils may contribute to a chemical reaction that could cause a load to catch fire.

Signup and view all the flashcards

What is important about the dryer exhaust system?

The dryer exhaust system must be exhausted to the outside of the dwelling. If the dryer is not exhausted outdoors, some fine lint and large amounts of moisture will be expelled into the laundry area. An accumulation of lint in any area of the home may create a health and fire hazard.

Signup and view all the flashcards

What is the potential consequence of not following safety warnings?

Failure to follow safety warnings exactly could result in serious injury, death or property damage.

Signup and view all the flashcards

What is the risk of improper grounding?

Improper connection of the equipment-grounding conductor may result in a risk of electric shock.

Signup and view all the flashcards

Where should the dryer not be installed?

Do not install or store this appliance where it will be exposed to the weather.

Signup and view all the flashcards

What is a requirement for the installation location?

A location that allows for proper exhaust installation.

Signup and view all the flashcards

What is needed for the floor in the installation location?

A sturdy floor to support the total dryer weight of 200 lb (90.7 kg).

Signup and view all the flashcards

What is important for installing a gas dryer?

Gas dryers MUST be exhausted to the outside.

Signup and view all the flashcards

What is a safety requirement for the dryer?

This appliance must be grounded.

Signup and view all the flashcards

What substances can gas appliances potentially expose you to?

Gas appliances can cause minor exposure to four of these substances, namely benzene, carbon monoxide, formaldehyde, and soot, caused primarily by the incomplete combustion of natural gas or LP fuels. Properly adjusted dryers will minimize incomplete combustion. Exposure to these substances can be minimized further by properly venting the dryer to the outdoors.

Signup and view all the flashcards

What is a restriction on appliances in the same closet as a dryer?

No other fuel-burning appliance can be installed in the same closet as a dryer.

Signup and view all the flashcards

What is important for maintaining the dryer area?

Keep area around the exhaust opening and adjacent surrounding areas free from the accumulation of lint, dust, and dirt.

Signup and view all the flashcards

What is the safety requirement for the electrical outlet?

This dryer must be plugged into a properly grounded outlet.

Signup and view all the flashcards

What should be done with the packing materials?

Remove all packing items and dispose of all shipping materials properly. Failure to do so may result in burns, fire, explosion, or death.

Signup and view all the flashcards

What is the minimum height requirement for a garage installation?

Place the dryer at least 18-inch (45.7 cm) above the floor for a garage installation.

Signup and view all the flashcards

Where should the dryer not be installed?

Do not install near another heat source such as a stove, oven or heater.

Signup and view all the flashcards

What should not be placed on top of the dryer?

Do not place candles, smoking materials, or other flammables on top of the product.

Signup and view all the flashcards

What is necessary before using the dryer?

Before use, the dryer must be properly installed as described in this manual.

Signup and view all the flashcards

What type of duct material is recommended for the dryer vent?

Use only rigid, semi-rigid or flexible metal 4-inch (10.2 cm) diameter duct inside the dryer cabinet or for exhausting to the outside.

Signup and view all the flashcards

What are the temperature and weather considerations for the dryer?

Install and store the dryer where it will not be exposed to temperatures below freezing or exposed to the weather.

Signup and view all the flashcards

Study Notes

Chapter 1 - Introduction to Thermodynamics

  • A vacuum gauge connected to a chamber reads 5.8 psi at a location where the atmospheric pressure is 14.5 psi. Determine the absolute pressure in the chamber.

Example 1

  • Pressure of a fluid at rest increases with depth due to added weight.

Example 2: Measuring Atmospheric Pressure with a Barometer

  • Determine the atmospheric pressure at a location where the barometric reading is 740 mmHg, and the gravitational acceleration is g = 9.805 m/s². Assume the temperature of mercury to be 10°C, at which its density is 13,570 kg/m³.

Problem 1-1

  • A 3-kg plastic tank that has a volume of 0.2 m³ is filled with liquid water. Assuming the density of water is 1000 kg/m³, determine the weight of the combined system.

Problem 1-2

  • Consider an alcohol and a mercury thermometer that read exactly 0°C at the ice point and 100°C at the steam point. The distance between the two points is divided into 100 equal parts in both thermometers. Do you think these thermometers will give exactly the same reading at a temperature of, say, 60°C? Explain.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

LG Dryer Owner's Manual PDF

More Like This

Vapor Pressure and Thermodynamics Quiz
3 questions
Thermodynamics and Pressure Quiz
8 questions
Misc Problems
9 questions

Misc Problems

VibrantMonkey avatar
VibrantMonkey
Use Quizgecko on...
Browser
Browser