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1. Name the two basic types of fans used in most AHUs.
2. On an AHU with a centrifugal fan, what are two advantages of backward-curved airfoil blades?
3 . State where axial fans are commonly used.
What is the advantage of nuclear hydrogen production?
The exits of both lines are open to the atmosphere. Assuming frictionless flow, what is the mass flow rate in each line?
Circuits problem. What is the significance of a negative sign in the answer for current when solving a network problem.
Assume the system shown in the Fig. is balanced, Rw = 0, Van = 208 angle 0 degree V, and positive phase sequence applies. calculate all phase and line currents, and all phase and line voltages, if Zp is equal to a) 1K ohms b) 100 + j48 ohm
A hydrogen sample is at equilibrium in a 1.5 Tesla magnetic field. A constant B1 field of 1.17x10-4 Tesla is applied along the +x'-axis for 50 microseconds. What is the direction of the net magnetization vector after the B1 field is turned off
The standing-wave ratio on a lossless 300transmission line terminated in anunknown load impedance is 2.5, and the nearest voltage minimum isat a distance 0.2λ from the load. Determine: a. the reflection coefficient of the load,
A shunt-connected motor has the magnetization curve shown in Figure. Ignore rotational losses in this problem. The motor is supplied from a source of VT = 240V and has RA = 1.5 Ω. The total field resistance is RF + Radj = 160 Ω. Find the no-load ..
temperature measurements are done in a room in five different locations during a week seven days once a day. write a
If an object is located at 0.5 times the focal length of a thin lens, calculate the location and lateral magnification of the image. Assume that both sides of the lens are filled with air, that the index of refraction of the lens is n=1.5
Using the super mesh approach, find the current through each element of the networks of given figure.
What is the velocity of the final body and what is its mass M?
Three screws are drawn at random from a lot of 100 screws, 10 of which are defective. Find the probability that the screws drawn will be nondefective in drawing (a) with replacement, (b) without replacement.
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