Heat Transfer Multiple Choice
Heat Transfer Mastery Quiz
Test your knowledge on heat transfer concepts with our comprehensive quiz! This quiz features 30 multiple-choice questions covering essential topics such as conduction, convection, Reynolds number, and more. Whether you're a student, teacher, or professional, this quiz is designed to challenge and enhance your understanding of heat transfer principles.
Key Features:
- 30 detailed questions
- Multiple-choice format
- Instant feedback on answers
If the general conduction equation becomes â–½^2 T = 0
Steady State
Steady State w/o heat gen
Transient State
Steady State w/ heat gen
For conductors that are arranged in parallel, which of the following doesn't vary?
Area
Q
–³T
Rt
Heat flux in an electrical circuit is analogous to __.
Current
Resistance
Voltage
None of the above
For conductors that are arranged in series, which of the following doesn't vary?
Thickness
Q
–³T
Rt
Temperature Difference in an electrical circuit is analogous to __.
Current
Resistance
Voltage
None of the above
A steady state heat transfer with internal energy conversion is described by __.
Fourier Equation
Poisson Equation
Laplace Equation
Reynold's Equation
For conductors arranged in parallel, which conductor posses the greatest heat flux?
Minimum K
Minimum A
Maximum K
Maximum A
In a conduction heat transfer, heat flux is __ proportional to temperature gradient.
Directly
Independently
Inversely
All of the above
Which thermal conductivity describes a good material for insulation? K = (in W/mC)
0.69 (nice)
1.83
0.15
11.1
Heat will flow from high temperature to low temperature unless it is aided by an external system
Fourier's Law of Heat Conduction
First Law of Thermodynamics
Second Law of Thermodynamics
Newton's Law of Cooling
A ratio between kinematic viscosity and thermal diffusivity.
Prandtl Number
Reynolds Number
Stanton Number
Mach Number
A flow line, which Reynolds Number is equal to 10000 is _________.
Laminar
Stagnant
Critical
Turbulent
A gaseous stream flows in a diverging tube, what happen to the density if the velocity is constant?
remain constant
Zero
Increase
Decrease
A flow line , which Reynolds Number equal to 1000 is _________.
Turbulent
Critical
Stagnant
Laminar
A ratio between kinematic viscosity to absolute viscosity.
Density
Conductivity
Stanton Number
specific volume
Approximately, what is the Prandtl Number for liquid metals?
10
1.0
1000
0.01
A gaseous stream flows in a converging tube, what happen to the velocity if the density is constant?
Zero
remain constant
Decreasing
increasing
Stanton Number is ______ to thermal convection coefficient.
directly proportional
inversely proportional
dependent
independent
A ratio between velocity of flow line to the local velocity of sound.
Mach number
Prandtl number
Reynolds number
Stanton number
For gasses that are exposed to a constant heat flux, the Stanton Number is ______.
constant
decreasing
zero
increasing
Oil flows in a converging tube, what happen to the Reynolds number?
decrease
remain constant
Increase
zero
Which of the following dimensionless ratio has restrictions in predicting h for turbulent flow
Reynolds number
Mach number
Prandtl number
Stanton number
If the Nusselt Number increases, what happens to heat fluxes?
remain constant
increase
zero
decrease
Which of the following dimensionless ratio is useful in identifying the type of flow?
Reynolds number
Mach number
Prandtl Number
Stanton number
A flow line, in which Reynolds Number is equal to zero is _________.
laminar
critical
stagnant
turbulent
Which of the following dimensionless ratio has restrictions in predicting h for laminar flow?
Prandtl Number
Stanton number
Mach number
Reynolds number
Which specific heat of the gas is to be considered in the calculation of Prandtl?
constant pressure
difference of cv and cp
average of cv and cp
constant volume
What happen to the absolute viscosity of common liquids as the temperature increase?
upredictable
increase
decrease
remain constant
A ratio between inertia force and viscous force
Reynolds number
Prandtl number
Mach number
Stanton number
In a convection heat transfer, heat flux is ______ proportional to temperature
all of the above
independently
inversely
Directly
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