Quiz_ Quiz 2

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School

California Polytechnic State University, Pomona *

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Course

4011

Subject

Aerospace Engineering

Date

Dec 6, 2023

Type

pdf

Pages

6

Uploaded by MarketFood

Quiz 2 Started: Mar 22 at 1pm Quiz Instructions Quiz 2 is 15 minutes long, closed book, notes, and homework. There are 20 concept type of questions. Please select True or False for each question. 1 pts Question 1 True False Forced convection is caused by buoyancy forces that are induced by density differences. 1 pts Question 2 True False The thermal diffusivity of a material can be viewed as the ratio of heat conduction to heat storage. 1 pts Question 3 True Thermal resistance is defined as the ratio of the driving temperature difference over the heat transfer rate.
False 1 pts Question 4 True False To decrease the heat transfer rate from a cylindrical pipe, the outer radius of the insulation must be less than the critical radius 1 pts Question 5 True False The isentropic efficiency of a turbine is the ratio of the isentropic turbine work output to the actual turbine work output. 1 pts Question 6 True False A composite wall consists of two parallel layers with thermal resistances R and R The total thermal resistance of the composite wall is R = R + R . 1 2. tot 1 2 1 pts Question 7
True False The fin effectiveness is the ratio of the actual heat transfer rate from the fin to the maximum heat transfer rate from the fin. 1 pts Question 8 True False Entropy is a nonconserved property 1 pts Question 9 True False The rate of convection heat transfer is expressed by Newton's law of cooling 1 pts Question 10 True False The Clausius statement of the second law of thermodynamics is related to heat engines
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