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You balanced a pump impeller by placing a 5 gram weight at a radius of 100 mm. The original vibration amplitude was 10 mm/s, and after adding the balancing weight, the vibration is 1 mm/s. The speed of the pump is 1500 rpm and the weight of the impeller is 3 kg.
a) Calculate the residual unbalance, the eccentricity and the balancing quality grade according to ISO balancing standard.
b) The stiffness of the pump%u2019s shaft is 80 kN/m. Calculate the natural frequency for the pump impeller on the shaft (ignore the weight of the shaft).
c) What is going to happen if the pump speed is increased to 1560 rpm?
Solve y"+y'-2y=2x^2, y(0) = 0, y'(0) = 1 following these steps a) find homogeneous solution, b) find nonhomogeneous solution with method of undetermined coefficient with constants evaluated,
Need for radical future plans to alleviate the very real problem we are faced with in New Zealand and address this problem, by providing an answer to Transpower
What do you believe would happen, if you removed the 220 ohm resistor from the circuit and connected the LED directly to the 555 integrated circuit. Are there any appreciable differences between labeled, calculated.
C++ Program Help, make a program that will read a file from a disk and will take the first letter of each word and and make that into a sentence.
Use Laplace transform techniques to find the solution to the following differential equation given that x = 1/3 at t = 0.
Find the noise temperature for a Cal-Amp C-Band 140105-1 low noise block down converters (LNB) for satellite TV. What is their equivalent series input resistance, and what implications does this have for the circuit design
A BJT is operated in a 50ohm circuit 1.5Ghz. FOr the bias conditions of Collector Current - 4mA and Collector-Emittor Voltage = 10V. The manufacturer provides the S-parameters in magnitude and angles (in degrees) as follows. S11 = 0.7
A three-phase, 400 V system has the following load connected in delta: between the red and yellow lines, a non-reactive resistor of 100; between the yellow and blue lines, a coil having a reactance of 60 and negligible resistance
What is the maximum symbol rate which can be sent over this link? If a binary line code is used, what is the maximum bit rate? What is the maximum bit rate with 4-ASK symbols?
Sketch the theoretical torque vs. speed characteristics for a series, shunt, and compound connected DC motor. Describe what will happen if a series motor is run under no load conditions. describe what will happen if a shunt motor experiences a lo..
A 1.0 dc voltage source is connected across a 10 ohm resistor. What is the current through the resistor if (a) the voltage source is ideal (b) the voltage source has internal resistance 0.1 ohm (c) internal resistance 1.0 ohm
If a circuit contains 3 automatic switches and we want that, with a probability of 95%, during a given time interval they are all working, what probability of failure per time interval can we admit for a single switch
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