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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?
What are the exact form of the equations for the 2nd-order step response for the underdamped, critically-damped, and overdamped conditions.
antialiasing and anti-imaging active filter Sampling rectangular pulses (sampling clock) set as the following. Vp (pulse value) = -5 volts, Period: 0.125 ms, Pulse width 0.02 ms Sinusoidal voltage source set as the following: Frequency = 1000 Hz , Vp..
How does the speed of an induction generator relate to synchronous speed Explain. How is power factor could be controlled if is is a squirrel cage machine? How about a wound rotor machine
a) the synchronous generator has a unique ability whihc places it at the top of the heap of all machines that might be used for generation of electric power. This unique capability is what allows the business of electric dispatch to even occur.
A unipolar 16 bit ADC measures 0-10 volts full scale. a) What is the minimum resolvable voltage b) What is the percent quantization error c) What is the percent quantization error if a 1 volt max signal is input
Explain the difference between hard-decision and soft-decision decoding in partial response signaling, including the relative advantages and disadvantages of each.
Compute the homogeneous solution yh(t). Compute the particular solution yp(t).
Use MATLAB to compute the inverse Laplace transform of X(s)=(s^2+2s+1)/(s(s+1)(s^2+10s+50)) and determine the value of x(t) in the steady state. How would you be able to obtain this value without computing the inverse? Explain.
A dc separately excited generator runs at 1200 rpm. the rated current and voltages are 100 A at 240 V. The armature resistance is 0.15 (ohms). The open circuit magnetization characteristics at 1200 rpm are
2. What is the expected output frequency of a sample and hold system if fs= finput 3. Which is input frequencies will give an output frequency of 50 Hz when put through a sample and hold system if our sampling frequency is 488 Hz
Received power of half-wave dipole antennas, Assume that two antennas are half-wave dipoles and each has a directive gain of 3dB. If the transmitted power is 1W and the two antennas are separated by a distance of 10 km, what is the received power?
Which requires more harmonics to accurately model it (triangle, square, and sawtooth) and why?
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