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Transition and Diffusion Capacitance
a. Referring to Fig. 1.33, determine the transition capacitance at reverse-bias potentials of -25 V and -10 V. What is the ratio of the change in capacitance to the change in voltage?
b. Repeat part (a) for reverse-bias potentials of -10 V and -1 V. Determine the ratio of the change in capacitance to the change in voltage.
c. How do the ratios determined in parts (a) and (b) compare? What does this tell you about which range may have more areas of practical application?
Determine the effective thermal conductivity of the composite for the arrangement - What is the ratio of the skin's heat loss per unit area for the windy day to that for the calm day?
A spring (not shown in the figure), whose force opposes the magnetic pull, restrains the motion of the armature. If the operating coil has 1800 turns carrying a current of 1 A, and the gaps are set at 0.125 cm each, find the pull that must be exer..
Compute the sending-end voltage, current, real power, and reactive power for the following conditions
Two coupled synchronous machines are used as a motor-generator set to link a 25-Hz system to a 60-Hz system. Find the three highest speeds at which this linkage would be possible.
If the company demands a 15 percent return on any unnecessary investment, which of the four designs should be accepted?
Your are designing a single flash separation process for a stream that contains 45% n-pentane (the rest is propionaldehyde). The mixture is to be flashed at 35 °C and you must determine the pressure so that the purity of n-pentane is 95%. What is ..
a gas present in a cylinder fitted with a frictionless piston expands against a constant pressure of 1 atm from a volume of 2 liters to a volume of 6 liters. it absorbs 800 j heat from surroundigs .
The advanced technologies used for solar power generation
Calculate the volume of lithium hydroxide at 0.12 M. required to neutralize 25 mL of sulphuric acid at 2.5 M. 3 marks 2. A sample of 2.5 g of solid NaOH will neutralize 125 mL of sulphuric acid. Calculate the molarity of the sulphuric acid. 3 mark..
Acetone is to be extracted from a solution in water, using 1,1,2-trichloroethane. The feed concentration is 45.0% w/w acetone. Determine the number of stages required to reduce the concentration of acetone to below 10%, using 32 kg of extraction-s..
The efficiency at rated load, 0.8 power factor lagging, and at half-load, unity power factor.
What is the binding energy in J per nucleon for the cobalt-60 nucleus (atomic masses: 60Co 59.9338 amu; 1H=1.00782 amu). What is the de Broglie wavelength of the emitted particle if it has a velocity equal to 0.90c where c is the speed of light?
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