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The photoelectric threshold wavelength for Tungsten is 2300 Å. Find the energy in eV of the emitted electrons from the surface by ultraviolet light of wavelength 1800 Å.
a 1.5 V battery will deliver 9mA for a continuous 38 hrs. during that time the voltage drop will be from 1.5 to 1.0 V. Assume the voltage drop is linear. How much energy does the battery deliver over the 38 hr interval
A single phase 220V system draws a current of 15A at a lagging power factor of 0.8. Calculate the value of a capacitor that can be used to improve the power factor of this system to 0.95 lagging.
A 3-phase 230 V, 9 kVA, 0.9 PF (lagging) load is supplied by 10 kVA, 1330/230 V, 60 Hz three-phase transformer connected in Y-?. The equivalent impedance of transformer referred to the low-voltage side is 0.12 + j0.25.
A 50-Ohm line is terminated by a (60 +j60) Ohm load. An adjustable shorted shunt stub is placed 0.23 Lambda from the load. What is the smallest standing wave ration that can be achieved between the generator and the line by adjustment of the stub ..
Realize the storage circuits for N1 and N2 as describe in the design specification.
The practical voltage source is formed by combining an ideal voltage source (Vs) and internal resistance (r). 1) Without computing, determine sign of power Ps delivered by voltage source
Use the simulation timing diagram to compare the worse case time to do an operation with your ALU with the worst case using the 74LS381. State which operation takes the longest and list the time required for both ALU's.
A series circuit has the following components. For each, calculate the voltage across it and the current through it. Component voltage Current 9 V source 9V 9.1 Kohm resistor 1 Kohm resistor 2.2 kohm resistor.
Determine the value of the constant c such that the following functions are valid probability functions: A. p(x) = cx/20, x = 1,2,3,4,5,6 and zero elswhere. B. p(x) = c(X^2 + 1), x = 1,2,3,4,5, and zero elsewhere.
In a processing plant, jars on a conveyer belt are cleaned out with a high-pressure air jet just prior to being filled (Figure Below). When a jar approaches the cleaning station, it activates a switch (with both NO and NC contacts).
1. design a simple power factor meter to operate from 230v mains. current range=1 to 10 amps. power factor range : 0.4 to 1 2. what is meant by normal mode rejection an A/D converter has 20ms integration time.
Write complete ionic and net ionic equations for each of the following molecular equations. a. 2HNO3(aq) + Mg(OH)2(s) ----- > 2H2O(l) + Mg(NO3)2(aq) Nitric acid, HNO3, is a strong electrolyte.
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