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Being quite interested in obsolete electronics, Angus has purchased several electronic music synthesis modules dating from the early 1970s and is testing them to find out how they work. One module is a voltage-controlled amplifier (VCA) that changes the amplitude (loudness) of an audio signal by changing a control voltage into the VCA. All Angus knows is that the magnitude of the control voltage should be less than 5 volts. He sets the audio input signal to an amplitude of 1 volt, then measures the audio output amplitude for different control voltage values. The following table shows these data. Show the resulting data and trendline, with equation and R2 value, on the appropriate graph type (xy scatter, semilog or log–log) to make the data appear linear.
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Chapter 13 Solutions
Thinking Like an Engineer: An Active Learning Approach (4th Edition)
- ASAParrow_forwardA kid is plating on a swing and it takes approximately 2.5 seconds to reach on side coming from the other. What is her frequency in Hz?arrow_forwardThe following is the equation of motion for forced damped vibration of a mass-damper system: mx + cx + kx Fo sin wt The magnification factor variation with respect to the frequency ratio is given in Figure Q5 for various damping ratio values. If it is known that for the system examined the damping ratio is 0.3 and the magnification factor takes the value 0.8, then how the vibration amplitude can be further reduced by only altering the mass, damping coefficient and stiffness coefficient? 4/1055 Amplitude ratio: M = 2.8 2.4 2.0 1.6 1.2 1.0 0.8 0.4 0 = 5.0 0.4 = 0.1 = 0.3 X = 0.4 -=0.5.-- = 1.5 = 2.0 0.8 1.2 1.6 2.0 1.0 Frequency ratio: r = = 3.0 2.4 2.8 3.2 W Wnarrow_forward
- The position with time of an object is given byx(t)=Acos(ωt) If the amplitude is 1.58 m, and the frequency is 1.2 Hz, what is the object's acceleration at 11.26 seconds?arrow_forwardIf you took a pendulum to the Moon, its frequency will be higher or lower than that on the Earth lower than that on the Earth same as that on the Earth higher than that on the Eartharrow_forwardThe response of a system is given by xt=0.003cos 30t +0.004sin 30t m. Determine (a) the amplitude of motion, (b) the period of motion, (c) the frequency in Hz, (d) the frequency in rad/s, (e) the frequency in rpm, (f) the phase angle, and (g) the response in the form of xt=Asin (ωt+φ)arrow_forward
- 2. Figure 1 shows a sensor consists of a core, an armature and a variable air gap. The core with 3.0 cm depth and 10000 relative permeability has 200 coil turns. On the other hand, the armature is a steel plate of thickness 0.2 cm and has similar relative permeability with the core. Assuming the relative permeability of air is unity and the permeability of free space is equal to 4x x 10-7 H.m, calculate the inductance of the sensor for air gaps of 0 mm and 2 mm. Please write the answers in 3 decimal places. 2.0 cm 1.0 cm 6.0 cm 3.0 cm 1.5 cm Figure Iarrow_forwardQ2. For the two degree of freedom system shown in Fig.2, determine the natural frequencies and the mode shapes for the system. k k Зт Fig. 2: Two Degree of Freedom System.arrow_forwardFigure 4 shows a simple apparatus for demonstrating resonance in a tube. A tube which is open at the top is filled with water and a vibrating tuning fork of unknown frequency is placed near the top of the tube. The water is allowed to flow through a valve, at the bottom of the tube. Tuning fork p water valve Figure 4 If, the first intensity in the sound is heard when the air column length is p. The next increase is heard when the air column length is y, and the last one is when the air column length is r. Draw the wave pattern happened at p, q and r. Label node and antinode. Calculate the respective frequencies.arrow_forward
- A controller output is a 5 to 25mA signal that drive a valve to control flow. The relation between current and flow is Q=40[I - 2mA]¹/2 L/min. What is the flow for 12mA? What current produces a flow of 140 L/min?arrow_forward人工知能を使用せず、 すべてを段階的にデジタル形式で解決してください。 ありがとう SOLVE STEP BY STEP IN DIGITAL FORMAT DON'T USE CHATGPT N 6, K₂ = 16M, Vb₁ = 10 Ns/m and Vb₂ = m Considering that m₁ = 3kg, m₂ = 4kg, k₁ = 6: 16 Ns/m a) Obtain the internal model from which you want to know the speed in the shock absorbers, Vb₁ and V1₂, and the force in the springs fk₁ and fk₂ to-b m₂ n k₂ K₁ b₂ XXXXX vor m₁ → Flt) b) Suddenly (t=0), when mass 2 is at a distance of 10 cm from its starting point and is going at a speed of 0.05 m/s, spring 1 breaks and detaches from mass 2. Obtain the external model for the position of mass 2 after the spring broke and calculate its position for when 1 second has passed since the spring broke and make a graph for the position of mass 2arrow_forwardA particle vibrates through space. It took 3ms to complete one cycle. What is its frequency in rad/sec?arrow_forward
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