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A strain gauge of 120O with a gauge factor 2 is used to measure the longitudinal strain developed in a cylindrical bar which has a diameter of 100mm and Young's Modulus of 5 x 1010Pa. A compressive force of 2 x 106N is applied to the bar. The strain gauge is connected to a Wheatstone Bridge with a supply voltage of 5V d.c. and other three resistor values are 120O each.
a. Determine the resistance value of the strained gauge.
b. Draw the Wheatstone Bridge circuit arrangement, showing the position of the strain gauge.
c. Determine the balance condition of the Wheatstone Bridge.
d. Determine the output voltage of the Wheatstone Bridge with the strained gauge.
e. If a dummy strain gauge is used to compensate the resistance change Rt caused by the temperature, indicate all the possible dummy strain positions on the graph drawn in (b).
Dynamic RAM that must be given a refresh cycle 64 times per ms. Each refresh operation requires 150 ns. memory cycle requires 250 ns.
A long wire carrying a 5.0 A current perpendicular to the xy-plane intersects the x-axis at x = -2.0 cm. A second, parallel wire carrying a 3.0 A current intersects the x-axis at x = +2.0 cm.
a) How long does it take for the soprano's voice to reach the listener b)In the same time interval, how far form the soprano has the sound wave in the auditorium traveled. Take the speed of sound to be 340 m/s.
Desing a mod-16 asynchrous ripple up counter by using j-k flip-flops. You need to design a j-k flip flop first and use it as the component in mod-16 up counter design. Show both j-k flip-flop design implementation results .
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Let X be a zero-mean random variable having a variance of 9 and let Y be another zero-mean random variable. The sum of X and Y has a variance of 29 and the difference of X and Y has a variance of 21.
Is the second law satisfied? Will this refrigerator still satisfy the second law if its coefficient of performance is 6?
A 10 kwatt, 480V , single phase 60Hz, 24 pole motor has an stator winding resistance of 0.1 ohm from line-to-neutral. The rotor is not a permanent magnet but a separately powered electromagnet (field wind-ings) that takes .5 A at 120 V.
Find the attenuation constant alpha, the phase constant beta, and the phase velocity u if the conductivity of the material sigma=(omega)(epsilon), the material parameters are Ur=1, epsilon r =2.5, and the wavelength in free space is lamda naught =..
the Mars Rover Spirit got stuck in the Martian sand. The wheels kept slipping. Attempts to free it were futile. Discuss the type of actuator in this case. Can you suggest any improvements in the actuator that would have prevented this unfortunate ..
A parking lot has 1000 spots. The automated entry / exit system allows maximum 5 percent more cars to enter the lot to minimize congestion. What should be the size of the counter to keep track of the number of cars in the lot
Two teams of workers assemble automobile engines at a manufacturing plant in Michigan. Quality control personnel inspect a random sample of the teams assemblies and judge each assembly to be acceptable or unacceptable.
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