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 49 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
:D TYSM

parker125

  • Member
  • Posts: 332
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Termination stage of translation in bacteria Termination stage of translation in bacteria
Evolutionary shift in plant life cycle stage dominance. Evolutionary shift in plant life cycle stage dominance.
Defibrillator. Defibrillators are devices that supply a voltage charge to the heart in the hope of r Defibrillator. Defibrillators are devices that supply a voltage charge to the heart in the hope of r
Devices used to deliver respiratory drugs. Devices used to deliver respiratory drugs.
A typical distributor-type diesel injection pump showing the pump, lines, and fuel filter. A typical distributor-type diesel injection pump showing the pump, lines, and fuel filter.
Intraaortic balloon pump. When inflated during diastole, the balloon supports cerebral, renal, and c Intraaortic balloon pump. When inflated during diastole, the balloon supports cerebral, renal, and c
Video: Types of disease resistance: innate defenses & immunity

For a complete list of videos, visit our video library