This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Why does a heat pump need two metering devices? A) One metering device is used for first-stage ... (Read 56 times)

shenderson6

  • Hero Member
  • *****
  • Posts: 573
on: Jul 24, 2018
Why does a heat pump need two metering devices?
 
  A) One metering device is used for first-stage heat and another for auxiliary heat.
  B) Two metering devices provide increased refrigerant flow at low ambient temperatures in heat.
  C) One metering device is used for the refrigerant circuit and another for the heat strips.
  D) One metering device is used for the cooling cycle and one for the heating cycle.

Question 2

What type of measurement is a grain?
 
  A) A grain is equal to one drop of water.
  B) A grain is a small measurement of weight.
  C) A grain is a small measurement of volume.
  D) A grain is theoretically extrapolated by multiplying the cube root of the wet-bulb measurement times the dry-bulb temperature measurement.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jharrington11

  • Sr. Member
  • ****
  • Posts: 365
Reply #1 on: Jul 24, 2018
Answer to Question 1

D

Answer to Question 2

B


shenderson6

  • Member
  • Posts: 573
Reply 2 on: Jul 24, 2018
Great answer, keep it coming :)

miss_1456@hotmail.com

  • Member
  • Posts: 289
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Photographs illustrating the shape of two different intrauterine devices Photographs illustrating the shape of two different intrauterine devices
Dial-A-Flo in-line device to regulate IV flow. Dial-A-Flo in-line device to regulate IV flow.
Devices used to deliver respiratory drugs. Devices used to deliver respiratory drugs.
Gerotor-type oil pump driven by the crankshaft. Gerotor-type oil pump driven by the crankshaft.
This exhaust manifold has a heat shield to help retain the heat and help reduce exhaust emissions. This exhaust manifold has a heat shield to help retain the heat and help reduce exhaust emissions.
Formation of membrane attack stage of complement. C3b containing structures (see above) on the ... Formation of membrane attack stage of complement. C3b containing structures (see above) on the ...
Video: Cognitive development by Piaget (Preoperational stage or intelligence)

For a complete list of videos, visit our video library