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1. Describe the relative advantages and limitations of cold and hot isostatic pressing.
2. Should green compacts be brought up to the sintering temperature slowly or rapidly? Explain your reasoning.
3. Explain the effects of using fine powders and those of using coarse powders in the making of P/M parts
4. It is possible to infiltrate P/M parts with various resins as well as with metals. What possible applications can benefit from infiltration? Explain.
5. Explain why the mechanical properties of workpiece materials are not significant in most of the processes described in this chapter.
6. In which of the manufacturing activities in industry is the wire EDM process most applicable?
7. Why do different material-removal processes affect the fatique strength of materials to different degrees?
8. Which of the advanced machining processes causes thermal damage? What is the consequence of such damage to workpieces.
9. Does EDM affect the fatigue strength of cold worked metals? Explain.
A. There are three part conveyor lines (1-2-3) feeding a main conveyor. Each of the three conveyor lines has its own counter. Construct a PLC program to obtain the total count of parts on the main conveyor. B. Add a timer to the program that will ..
A wattmeter connected into the line gives a reading of 2765W. If a capacitor have a reactance of 30ohms is connected in parallel with the motor. Calculate the total reactive power absorbed by the capacitor and motor.
Design a mod-6 UP/DOWN counter: A) Using JK flip-flops and the state equation method. (Show the state diagram, state table, state equations, flip-flop input equations, and the logic diagram.)
A voltage source v(t) = 28.2cos(50000t) is wired in series with a 100 Ω resistor, a 0.40μF capacitor, and a 2.0 mH inductor. 1. Express the voltage from the source as a phasor, V. 2. Find the phasor current I in all the elements.
Determine the half power frequency fc defined as the frequencyat which the magnitude of the transfer function is at 1/√2 ofits maximum value. Assuming C is fixed at 0.02 μF, calculatethe half power frequencies corresponding to R=20 kΩ, 50kΩ, and 1..
Use the initial and final value theorems to find the initial and final value of the time function corresponding to the following Laplace transform X(s) = x/(s+1)(s+4)
Design an EKG amplifier interface to a 6811/6812. The biopotential is a ±5-mV signal measured between the left and right arms using silver-silver chloride electrodes. A third electrode is placed in the right leg and is used as a reference.
A sequential circuit for a luggage lock has ten pushbuttons labeled 0,1,2,3,4,5,6,7,8 and 9. Each pushbutton 0 through 9 produces a 1 on Xi, i = 0 through 9, respectively, with all other values on variable Xj, j does not equal i, equal to 0.
an automobile travels 1200ft in 30s while being accelerated at a constant rate of 1.8 ft/s^2. Determine (a) its initial velocity, (b) its final velocity, (c) the distance traveled during the first 10s
A 1(lambda) wavelength long line has parameter R=0.2 Ohm/m, G=0.002 mho/m, L=15 muH/m and C=2.31pF/m. The line is operated at a frequency f=2.5 GHz. It is terminated with a load impedance of 100 Ohms.
a motorcycle battery delivers around 10 Volts DC, at an ampacity of about 500 Amps. this voltage goes through ignition (transformer) and it delivers about 30 KV to each spark plug. What is the turn ratio (Ns/Np) and the resulting ampacity on secon..
For a BJT common Emitter Amplifier, the AC base voltage = 1,2Vrms, Av=50, Bdc=150, Bac=200, alpha dc =0.98 and an RE of 500 ohm. What is the AC P-P voltage
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