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 39 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
YES! Correct, THANKS for helping me on my review

mcarey591

  • Member
  • Posts: 365
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

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 first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Faulty outlooping produces F?, an F plasmid that contains chromosomal DNA Faulty outlooping produces F?, an F plasmid that contains chromosomal DNA
Block open the throttle (and choke, if the engine is equipped with a carburetor). Here a screwdriver ... Block open the throttle (and choke, if the engine is equipped with a carburetor). Here a screwdriver ...
A typical engine coolant temperature (ECT) sensor. ECT sensors are located near the thermostat ... A typical engine coolant temperature (ECT) sensor. ECT sensors are located near the thermostat ...
Most stepper motors use four wires, which are pulsed by the computer to rotate the armature in ... Most stepper motors use four wires, which are pulsed by the computer to rotate the armature in ...
In a multiair engine design, the exhaust valves are opened by the exhaust camshaft lobes. Intake ... In a multiair engine design, the exhaust valves are opened by the exhaust camshaft lobes. Intake ...
Helgeson Company has identified the following items for possible inclusion when taking a ... Helgeson Company has identified the following items for possible inclusion when taking a ...
Video: Electrical Conduction System of the Heart

For a complete list of videos, visit our video library