100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
HVAC EXAM 2 QUESTIONS AND ANSWERS $10.49   Add to cart

Exam (elaborations)

HVAC EXAM 2 QUESTIONS AND ANSWERS

 6 views  0 purchase
  • Course
  • HVAC
  • Institution
  • HVAC

Which of the following is used to determin the size of a room - Answer- Window frames To find volume of a cylinder it is necessary to - Answer- Find the volume of the circle forming base for which of the folling is area used - Answer- surfaces In order to determine hear flow one must know ...

[Show more]

Preview 2 out of 5  pages

  • July 23, 2023
  • 5
  • 2022/2023
  • Exam (elaborations)
  • Questions & answers
  • HVAC
  • HVAC
avatar-seller
Greaterheights
HVAC EXAM 2 QUESTIONS AND ANSWERS
Which of the following is used to determin the size of a room - Answer- Window frames
To find volume of a cylinder it is necessary to - Answer- Find the volume of the circle forming base
for which of the folling is area used - Answer- surfaces
In order to determine hear flow one must know the amount of time and - Answer- BTU
Units that connot be measured in base units and require more than one measurement are called - Answer- Derived units
Cubic yards are typically used to measure - Answer- Large volumes of dirt
The space/volume in a room is measured by - Answer- Cubic Feet
Which of the following is a characteristic of water vapor but not other water in states - Answer- Water is compressible
how does the law of conservation state that matter never changes - Answer- Matter never changes quantity
How would the laq of conservaton of matter explain what happends to a cup of water when it evaporates - Answer- The liquid water is now water vapor of the same quantity
Which basic principle is one that influences how all HVACR systems work? - Answer- An increase in pressure can increase the boiling point of a liquid the temp at which a luquid turns to a gas.
As an air-Conditioning and refrigeration tech, which of the following stats of matter will you use in your job - Answer- Solid, liquid, and gas
Which of the following is accurate about gases - Answer- A gas must be contained in a closed container or it will escape into the atmosphere
The point at which water or another substance may exist simultaneouslty as a solid liquid and gas is - Answer- Triple point
When a liquid vapor mix is heated in a closed space eventually the density of the liquid decreases and density of the gas incresas when no difference exists between the liquid and bapor exists it has reached its - Answer- Critical point
A person rideing in car flies forward when the car comes to a sudden stop what concept
does this illustrate? - Answer- Inertia Which of the following is true with items with larger mass - Answer- Objectswith a larger mass have more inertia than objects with less mass
How do industry organizations make it easier to compare testing results for HVACR tech - Answer- Industry organizations determine a set of standard conditions that make all HVACR testing results
How do environmental variable complicate HVACR testing - Answer- Testing Conditions
such as air pressure an temp can affect testing
In a HVACR tech determines the ration fo the density of a material to the density of a common material what is she calculating - Answer- Specific Gravity
Natural gas will float on air what does this tell us about its properties? - Answer- It has a
lowe specific gravity thain air
Which is occurring when gaseous molecules release heat and join together to form a liquid. - Answer- Condensing
How does pressure affect boiling point - Answer- The bolining point is directly proportional to the amount of pressure
Why is the voltage of electricity changed for transmission over long distances - Answer- It reduces the amount of electricity loss
Why is the figure 3.41 significant in figuring BTU - Answer- One watt produces 3.41 BTU per hour
A ball rolls down an incoine in 5 seconds which illustrates the concept of work - Answer-
The Rolling ball
When an electron moves from one atom to another it causes a chain reaction what is the result of the reaction - Answer- electrical energy
If someone works with electricity what measurements may be used - Answer- Coulombs
and watts
Which of the folling is true about the relationship beween potential and kinetic energy - Answer- Kinetic and Potential energy my be converted in either direction
Three forms of energy used in heating and air conditioning includee - Answer- Electrical
magnetic mechanical
what units are most commonly used to measure heat quantity in the USA - Answer- BTU

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller Greaterheights. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $10.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

75632 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$10.49
  • (0)
  Add to cart