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1. What are the four separate loads used to calculate the heat load for walk-in coolers or freezers?
2. What is the first step in selecting commercial refrigeration equipment for new installations?
3. What are the approximate ventilation requirements for aircooled condensing units located in an indoor environment?
It is given for one kind of vegetable oil fuel a saponification value of 190 mg KOH/g oil and an iodine value of 90 g I/100 g oil. Calculate the higher heating value.
In the plane z=5 there is a ring with a 3cm radius with its center on the z axis. The ring has a uniformly distributed charge Q. The origin 0,0,0 is at a small sphere with a mass of 0.5kg and a charge of -Q.
The block diagram of a motor-control system with tachometer feedback is shown in Fig. 2P-46. Find lhe range of the tachometer constant K, so lhal the system is asymptotically stable.
A program that reads a two-dimensional matrix of size N × N and writes the values using zigzag ordering described in the chapter.
A load consists of a resistance R in parallel with a capacitor of reactance X. The load is fed from a single phase supply through a line of impedance 8.4 + j11.2 ohms. The rms voltage at the load terminal is 1200 at 0 degress V rms,
The rate of heat loss from the air in the duct is estimated to be 300 W. Determine the power rating of the electric resistance heating element.
at what distance along the central perpendicular axis of a uniformly charged plastic disk of radius 0.6m is the
determine the sum of the incremental cash flows for Alternative B-Alternative A First cost $: A=-50,000 B=-85,000 Annual operating cost/year: A=-8,600 B=-2,000 annual revenue/year: A=22,000 B=45,000 salvage value: A=3,000 B=8,000
A constant magnetic field passes through a single rectangular loop whose dimensions are 0.35 m × 0.55 m. The magnetic field has a magnitude of 2.1 T and is inclined at an angle of 65° with respect to the normal to the plane of the loop.
a. Convert the per unit generator reactance to the step-up transformer base.
Assume a receiver is located 10 km from a 50 W transmitter. The carrier frequency is 6 GHz and free space propagation is assumed. Assume the unit gains for the system gains. Find: a) The power at the receiver
Olympic Sports has two issues of debt outstanding. One is a 8% coupon bond with a face value of $21 million, a maturity of 10 years, and a yield to maturity of 9%. The coupons are paid annually.
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