Answer:
The heat transfer q = 18.32W
Explanation:
In this question, we are asked to calculate the heat entering the tube and also evaluate properties at T =400K
Please check attachment for complete solution and step by step explanation
If you were choosing between two strain gauges, one which has a single resistor in a bridge that varies and one that has two res
istors that vary, one that increases and one which decreases, which would you expect to give a more linear voltage output (that is, a linear function of ‘x’, the position of the potentiometer)?
1 answer:
Answer:
A strain gauge in which only one resistor varies is typically called a quarter bridge arrangement. The one in which 2 resistors vary, is called a half bridge arrangement, where the resistors showing opposite effects are mounted on either side of the flexing body. The figures and relationship between the output voltages and the change in resistance delta_R, is shown in the below diagram:
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Answer:
0.0406 m/s
Explanation:
Given:
Diameter of the tube, D = 25 mm = 0.025 m
cross-sectional area of the tube = (π/4)D² = (π/4)(0.025)² = 4.9 × 10⁻⁴ m²
Mass flow rate = 0.01 kg/s
Now,
the mass flow rate is given as:
mass flow rate = ρAV
where,
ρ is the density of the water = 1000 kg/m³
A is the area of cross-section of the pipe
V is the average velocity through the pipe
thus,
0.01 = 1000 × 4.9 × 10⁻⁴ × V
or
V = 0.0203 m/s
also,
Reynold's number, Re =
where,
ν is the kinematic viscosity of the water = 0.833 × 10⁻⁶ m²/s
thus,
Re =
or
Re = 611.39 < 2000
thus,
the flow is laminar
hence,
the maximum velocity = 2 × average velocity = 2 × 0.0203 m/s
or
maximum velocity = 0.0406 m/s