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1. Explain why safety is so important when addressing IAQ.
2 Name some pollutants that require lab testing for positive identification.
3. What is the viral disease that certain mice can carry?
4. Why is it necessary for an HVACR technician to understand the building systems?
A proportional control system is to be used to control the wing flaps of a jet air-plane. The wind load is expected to cause as much as 600 in .lb of torque. The system should be able to keep the flaps to within 5 of the set point.
Use computer graphics/ or by hand to illustrate 6-pole stator winding of an AC machine. For wt = 0 and wt = 180o show the phasor diagram of phase currents, polarity of currents in individual conductors, and the flux paths.
A cylindrical tank filled to a height of 25 feet with tribromoethylene has been pressurized to 3 atmospheres (Psurface = 3 atmospheres). The total pressure at the bottom of the tank is 5 atmospheres. Determine the density of tribromoethylene in uni..
EXPLAIN ONE WAY OF ACHIEVING SYNCHRONIZATION IN PAM,PDM AND PPM
In an FM line of sight link , the frequency is 6 GHz and the beamwidth = 27 MHz the transmitting and receiving antennas have a gain of 33 dB , the receiving antenna is 40 Km apart from the transmitting station
Message signal m(t) = 0.6sin(27r3000t + pi/9) For a carrier signal with amplitude Ac = 4,fc = 40MHz, answer the following. What are the expressions for the transmitted signals in part a Find the transmitted power for each signal in the part a
A dc servomotor is going to be used to drive a conveyor belt in a potato chip factory. The conveyor belt will contain bags of potato chips that will be dumped into cardboard boxes for shipping. The lead process controls engineer has instructed you to..
An urn contains N balls numbered 1 to N. Someone draws n balls(without replacement) from the urn, where 1
consider the 2x2 3-db coupler and suppose we connect the two outputs with a piece of fiber. assume that the
Two large flat charged plates are fixed parallel to one another in a large tank of distilled water with a total surface charge of 41.25×10-7 C on each plate (with opposite polarities). The plates are square, 4 m each side.
Design an 8-bit register with 2 control inputs s1 and s0, 8 data inputs I7..I0, and 8 data outputs Q7..Q0. s1s0=00 means maintain the present value, s1s0=01 means load, and s1s0=10 means clear. s1s0=11 means to swap
Two pointcharges, Q1 and Q2,are located at (1,2,0) and (2,0,0) respectively. Find the relation between the valuesofQ1 and Q2 suchthat the total force on a test charge atpoint P = (-1, 1, 0) has (a)no x-component, or (b)no y-component.
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