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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.
The electric and magnetic fields of a uniform plane wave propagating in a perfect dielectric medium
1. Give a summary of the article, what is the basic concept and the key technology. 2. What are the differences, advantages and disadvantages of the proposed technology compared to conventional MOSFETs and BJTs.
Three loads (R1, R2 and R3) are connected in series to a 120-VDC source. The values of E1 and E2 are measured and found to be 32 V and 8 V, respectively. What is the value of E2
A company is designing a product. It expects to sell 100 million copies of it. Should the company use an MPGA or an FPGA for this product?
You are given a black box, a 6 k Ohm resistor, a 40 nF capacitor, a voltmeter, and an ammeter. With these supplies you complete the following measurements at 950 Hz: You place the resistor and capacitor in series and measure a current flowing.
a) Plot the spectrums for the range from 0 Hz to 25000 Hz. Make sure to label the frequncies. b) sketch the recoverd analog signal spectrum if an ideal lowpass filter with a cutoff frequncey of 4.5 kHzis used to filter the sampled signal.
Fuel Cell produces current by using H2. Anode reaction: H2-->2H+ + 2e- Cathode reaction: 4e- + 4H+ +O2 --> 2H2O. The rate at which Hydrogen enter the fuel cell is given as 5 L/min. The temperature is constant at 300K.
Use these results to find the required capacitances, assuming an inductor of 15 nH with a Q of 50, and a transistor with Determine the minimum value of the inductor Q required to sustain oscillations
Design a multiplexer which has four input lines, two controllines, and one output line and a demultiplexer which has one input line, two control lines, and four output lines using truth tables and k-maps.
The purpose of this problem is to show you the connection between Fourier series and linear algebra. For simplicity, we will consider a finite basis. All questions will be referred to the following basis B = {1, sin(400t), cos(400t), sin(800t), cos..
Obtain the optimum tap weights for a three-tap MMSE equalizer and at a SNR of 10 dB and b = 0:5.
What is the purpose of user parameter control/network parameter control? Define traffic parameters and traffic descriptors.
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