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VIZAG M.T. Exam. 2017- Heat Transfer Quiz 3
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Question 1
Which is incorrect in case of Grash of number?
Question 2
Which of the following is a wrong statement?
Question 3
In a balanced counter flow heat exchanger where m hch = m ccc , the temperature profiles of the two fluids are
Question 4
What is the value of the shape factor for two infinite parallel surface separated by a distance d ?
Question 5
As the temperature increases, the thermal conductivity of a gas
Question 6
Which of the following graph represent a counter-flow heat exchanger ?
1)
2) 
3)
1)
2) 3)
Question 7
In the laminar flow of air (Pr = 0.7) over a heated plate. if δ and δT denote, respectively, the hydrodynamic and thermal boundary layer thicknesses, then
Question 8
which one of the following configurations has the highest fin effectiveness?
Question 9
Saturated vapor is condensed to saturated liquid in a condenser. The heat capacity ratio is 
. The effectiveness (ε) of the condenser is
. The effectiveness (ε) of the condenser is Question 10
For an opaque surface, the absorptivity(α), transmissivity(τ), and reflectivity(ρ) are related by the equation
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