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1. What are three important items to consider in the design of commercial refrigeration systems?
2. Refrigeration is divided into four broad areas based on the evaporator coil temperature. What are these?
3. Food items like milk, cheese, and fresh fruit and vegetables are usually stored at what temperatures?
Compute the resistance of a 10m wide stretch of soil that is 2m away from the edge of a grounded hemisphere. The radius of the hemisphere is 0.5m. Assume that the soil is dry.
What would be the output voltage amplitude be if you used 1 amplifier stage?- What would be the output voltage amplitude be if you cascaded 2 amplifier stages between the source and the load?
what is an example of a good that you have found remains unchanged whether the price increases or
A power company supplies 75 kW to an industrial load. The load draws 120 Arms from the transmission line. If the load voltage is 440 Vrms and the load power factor is 0.8 lagging, find the losses in the transmission line.
Given a four-volt peak to peak square wave, calculate the mean-square error in approximating the wave by only its fundamental sinusoidal component. Assume the average value is zero (no DC offset).
A shunt-connected a DC motor has zero rotational losses and RA = 0. Assume that RA and Radj is constant [except in part (d)] and that φ is directly proportion to field current. For VT= 200 V and Pout = 2 hp.
Excitation is provided by a 140-turn, 30 ohm coil. Determine the voltage required to establish a flux density of 1.56T. The reluctance of the magnetic circuit, when operating at this flux density is 768 A-t/Wb.
How to Wiring of the Distribution Board with RCD , Single Phase, (from Energy Meter to the main Distribution Board) Fuse Board Connection. ??
Assume you wanted to produce a circuit for which the output voltage was given by the expression Vout = -3A - 2B (A and B are variable input voltages). Show how this operation could be accomplished with a summing amplifier by drawing the circuit. Show..
design a new p-type semiconductor material. Acceptor density is Na=5x1015 cm^-3 and there are no donors are present in the material. The effective densities of states for this material is given as Nv=1.8x10^19cm^-3
How old are our drivers? Table below gives the age distribution of licensed drivers in the United States.
It was noticed (in the field) that when the load was turned off (0 real power consumption) that the generator began to operate leading, yet the engineer was not able to replicate this behavior using the model described above. Explain what is defic..
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