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

Author Question: A company that produces pulsed gas heaters claims their efficiency is approximately 90. If an engine ... (Read 19 times)

Charlie

  • Hero Member
  • *****
  • Posts: 640
on: Jul 28, 2018
A company that produces pulsed gas heaters claims their efficiency is approximately 90. If an engine operates between 250C and 25C, what is its maximum thermodynamic efficiency?
 a. 83
  b. 65
  c. 43
  d. 90
  e. 56

Question 2

A steam engine is operating at its theoretical maximum efficiency of 60. If the waste heat has a temperature of 100F (38C), what is the temperature of the boiler?
 a. 350C
  b. 94C
  c. 225C
  d. 504C
  e. 775C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

skipfourms123

  • Sr. Member
  • ****
  • Posts: 343
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

D


Charlie

  • Member
  • Posts: 640
Reply 2 on: Jul 28, 2018
:D TYSM

meganmoser117

  • Member
  • Posts: 303
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Did you know?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

After the engine has been cranked for four “puffs,” stop cranking the engine and observe the ... After the engine has been cranked for four “puffs,” stop cranking the engine and observe the ...
If a cylinder(s) is lower than most of the others, use an oil can and use two squirts of engine oil ... If a cylinder(s) is lower than most of the others, use an oil can and use two squirts of engine oil ...
Double-check for any oil or vacuum leaks after starting the engine. Double-check for any oil or vacuum leaks after starting the engine.
An overhead camshaft engine equipped with variable valve timing on both the intake and exhaust ... An overhead camshaft engine equipped with variable valve timing on both the intake and exhaust ...
Start the vehicle’s engine and let run at 1000–1500 RPM. The engine is now running on fuel ... Start the vehicle’s engine and let run at 1000–1500 RPM. The engine is now running on fuel ...
Approximately 40 percent of farmers in the United States are 55 years old or older Approximately 40 percent of farmers in the United States are 55 years old or older
Video: What is Reverse Osmosis?

For a complete list of videos, visit our video library