My Learning Cart
?
Categories
Account

A refrigerator removes heat from the interior at a rate of 200 W. If the coeffic

₹0.0
Login to Download
  • 📥 Instant PDF Download
  • ♾ Lifetime Access
  • 🛡 Secure & Original Content

What’s inside this PDF?

Question: A refrigerator removes heat from the interior at a rate of 200 W. If the coefficient of performance (COP) is 4, what is the power consumed by the refrigerator?

Options:

  1. 50 W
  2. 100 W
  3. 200 W
  4. 800 W

Correct Answer: 100 W

Solution: 

COP = Qc/W, thus W = Qc/COP = 200 W / 4 = 50 W.

A refrigerator removes heat from the interior at a rate of 200 W. If the coeffic

Practice Questions

Q1
A refrigerator removes heat from the interior at a rate of 200 W. If the coefficient of performance (COP) is 4, what is the power consumed by the refrigerator?
  1. 50 W
  2. 100 W
  3. 200 W
  4. 800 W

Questions & Step-by-Step Solutions

A refrigerator removes heat from the interior at a rate of 200 W. If the coefficient of performance (COP) is 4, what is the power consumed by the refrigerator?
  • Step 1: Understand the problem. We have a refrigerator that removes heat from inside it at a rate of 200 Watts (W).
  • Step 2: Know what the Coefficient of Performance (COP) means. The COP is a measure of the efficiency of the refrigerator, given as 4 in this case.
  • Step 3: Use the formula for COP. The formula is COP = Qc / W, where Qc is the heat removed (200 W) and W is the power consumed by the refrigerator.
  • Step 4: Rearrange the formula to find W. We can rearrange it to W = Qc / COP.
  • Step 5: Substitute the values into the formula. We have Qc = 200 W and COP = 4, so W = 200 W / 4.
  • Step 6: Calculate the power consumed. Dividing 200 W by 4 gives us 50 W.
  • Step 7: Conclude that the power consumed by the refrigerator is 50 W.
  • Coefficient of Performance (COP) – COP is a measure of the efficiency of a refrigeration system, defined as the ratio of heat removed from the cold reservoir (Qc) to the work input (W).
  • Heat Transfer – Understanding how heat is removed from the interior of the refrigerator and the relationship between heat transfer and work done.
  • Power Consumption – Calculating the power consumed by the refrigerator based on the heat removal rate and the COP.
Soulshift Feedback ×

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?

Not likely Very likely
Home Practice Performance eBooks