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

Author Question: If electric heating elements are used in conjunction with a heat pump, when do they operate? A) ... (Read 53 times)

K@

  • Hero Member
  • *****
  • Posts: 608
on: Jul 24, 2018
If electric heating elements are used in conjunction with a heat pump, when do they operate?
 
  A) The electric heating elements operate in the second stage.
  B) The electric heating elements operate simultaneously with the heat pump.
  C) The electric heating elements operate in the first stage.
  D) The electric heating elements operate whenever the heat pump is not operating.

Question 2

A silicon-controlled rectifier (SCR):
 
  A) Turns DC voltage to AC voltage.
  B) Turns AC voltage to DC voltage.
  C) Increases or decreases alternating current voltage.
  D) Can be turned on and off like an electronically controlled switch.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

memslove

  • Sr. Member
  • ****
  • Posts: 321
Reply #1 on: Jul 24, 2018
Answer to Question 1

A

Answer to Question 2

D


K@

  • Member
  • Posts: 608
Reply 2 on: Jul 24, 2018
Gracias!

recede

  • Member
  • Posts: 315
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Did you know?

Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

Did you know?

After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

The most abundant elements found in living organisms The most abundant elements found in living organisms
Measuring Temperature Using a Heat-Sensitive Wearable Thermometer Measuring Temperature Using a Heat-Sensitive Wearable Thermometer
Earth’s Heat Budget Earth’s Heat Budget
Elements Found in Organisms Elements Found in Organisms
Heating the Atmosphere Heating the Atmosphere
Warning Signs of Heat Exhaustion and Heat Stroke Warning Signs of Heat Exhaustion and Heat Stroke
Video: Metabolic Rate, Heat and Thermoregulation - response to heat and cold stresses

For a complete list of videos, visit our video library