Question 1 Natural convection is the result of fluid motion due to: Body forces Density gradients and body forces Temperature difference alone. Density gradients. Question 2 The Grashof number represents: The ratio of buoyancy forces to inertial forces The ratio of buoyancy forces to viscous forces forces The ratio of inertial forces to viscous forces The ratio of viscous forces to buoyancy forces

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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Question 1
Natural convection is the result of fluid motion due to:
Body forces
Density gradients and body forces
Temperature difference alone.
Density gradients.
Question 2
The Grashof number represents:
The ratio of buoyancy forces to inertial forces
The ratio of buoyancy forces to viscous forces forces
The ratio of inertial forces to viscous forces
The ratio of viscous forces to buoyancy forces
Transcribed Image Text:Question 1 Natural convection is the result of fluid motion due to: Body forces Density gradients and body forces Temperature difference alone. Density gradients. Question 2 The Grashof number represents: The ratio of buoyancy forces to inertial forces The ratio of buoyancy forces to viscous forces forces The ratio of inertial forces to viscous forces The ratio of viscous forces to buoyancy forces
Question 3
Under what condition are the contribution of natural convection and forced convection of equal importance:
Gr/Re^2 = 1
Gr/Re < 1
Gr/Re^2> 1
Gr/Re = 1
Question 4
Natural convection over a vertical surface generates a flow that always moves upwards?
True
False
Transcribed Image Text:Question 3 Under what condition are the contribution of natural convection and forced convection of equal importance: Gr/Re^2 = 1 Gr/Re < 1 Gr/Re^2> 1 Gr/Re = 1 Question 4 Natural convection over a vertical surface generates a flow that always moves upwards? True False
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