Answer and Explanation:
The parameter which affect the heat transfer coefficient in a heat exchanger are
- Viscosity of the liquid, thermal conductivity,density , specific heat
- Geometry of heat exchanger that length width and height of heat exchanger
- Velocity of fluids
- It also depends on the type of flow of liquid that laminar flow ,turbulent flow
The number of revolutions the wheel would make will be 37 revolutions. The correct option is B.
<h3>What is circumference?</h3>
The perimeter of the circle is called the circumference of circle.
Given is the wheel diameter CD = Dwheel = 7.45 inches and Length required to cover =144 inches.
For one revolution, distance equal to circumference is moved.
1 rev = π x Dwheel
1 rev = π x 7.45inches
1 rev = 23.393 inches.
No of revolution to travel 540 inches,
= 144/23.393
=6.1557 rev
≈ 6.15 revolutions.
Thus, the correct option is B.
Learn more about circumference.
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Answer:
0.26386
Explanation:
T₁ = Tight side tension = 1000 N
T₂ = Slack side tension = 100 N
θ = Wrap angle = 500° = 500π/180 radians
μ = Coefficient of friction
Belt tension theory
Taking natural logs on both sides
∴ Coefficient of friction is 0.26386
Hard wood is gritty and soft wood is smooth wood , because they have different texture