4) A communication mass/spring/damper sensor on a spacecraft is modelled as a as shown below. If K = 112.5 N/m, C= 15 kg/s, M = 0.5 kg, x(0) = 0, v(0) = 1.5 m/s, and the sensor casing has length L = 0.01 m, will the sensor collide with the case wall? SENSOR CASE 14/2 m -J 20 L- ZZZ xH) M (SENSOR) ZAVZAWA K/2 Im D c/2 O
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- Compare the electromagnetic vibration sensor and piezoelectric vibration sensor types in terms of EMI resistance, off-axis sensitivity, mounting orientation, and mechanical durability, and hence make recommendations to improve the operating efficiency of the vibration monitoring unit of the vibration monitoring system of the engine-gen set. You are encouraged to use clearly labeled schematic diagrams to explain the principles of operation of the sensors and why EMI may be significant in the environment and hence a sensor type with better EMI resistance should replace the electromagnetic type sensorA manipulator’s end-effector position is calculated as follows:x = q0 cos q1 + l2 cos(q1 + q2),y = q0 sin q1 + l2 sin(q1 + q2),where q0,1,2 represent joint displacements and l2 is a constant positive parameter.Which of the following describes this manipulator:1) This is a robot-manipulator with 3 revolute joints.2) This is a robot-manipulator with 2 revolute and 1 prismatic joints.3) This is a robot-manipulator with 1 prismatic and 3 revolute joints.4) This is a robot-manipulator with 2 revolute joints. A robot’s end-effector’s tool position is defined asx = L1 cos(q1) + q3 sin(q1 + q2)where L1 = const, q1 = q1(t), q2 = q2(t) and q3 = q3(t) with t defining time. Calculate ∂x / ∂q3 1) it is impossible to calculate as the equation for the y and z positions are missing.2) cos(q1 + q2).3) it is impossible to calculate as time is not given.4) sin(q1 + q2).A glitch appears in the waveform of a vehicle speed sensor. Which of the following is not a probable cause of the problem? a. A loose connector b. A damaged wire c. A poorly mounted sensor d. A damaged magnet in the sensor
- What will be the ln (natural logarithmic) value of the temperature (t), if a sensor has medium temperature 140 °C, Initial Temperature 25 °C and actual temperature is 60 °C. ln value of temperature, tWhat is the difference between static lateral stability and lateral stability? I see textbooks differentiate between the two but I don’t understand the differenceThe image below depicts one section of a cam shaft which opens a valve to release the pressure in the combustion chamber. In order to synchronize the position of the piston and the release of the valve, there is a sensor that measures the position of the camshaft. The sensor can determine when point a is 0.672 in. to the right of the center of the camshaft and 0.672 in. above the center of the camshaft. In a four stroke engine the crank shaft, which is connected to the pistons, turns twice for every turn of the camshaft. At cruising speed the crank shaft turns at 3,000 rotations per minute (rpm) which means that the camshaft turns at 1,500 rpm or 25 revolutions per second (rps). After 0.825 seconds, where would point a be in relation to the center of the camshaft?* Answer options are: (-0.589,0),(0.116, -0.316), (0,-0.95),(0.86,-0.315),(0.431,0), none of these are correct. Please be sure to show your steps.
- explain the significance of the following information given in the specification of transducers: Thermocouple Sensitivity: nickel chromium-nickel aluminium thermo-couple: 0.039 inV/°CA displacement transducer has the following specifications: Linearity error: ±0.25% reading Drift: ±0.05%/°C reading Sensitivity error: ±0.25% reading Excitation: 10-25 V dc Output: 0-5Vdc Range: 0-5 cm The transducer output is to be indicated on a voltmeter having a stated accuracy of 0:1% reading with a resolution of 10 μV. The system is to be used at room temperature, which can vary by 10 °C. Assume 95% confidence. The displacement transducer above is used in measuring the displacement of a body impacted by a mass. Twenty measurements are made, which yield Determine a best estimate for the mass displacement at 95% probability based on all available information.A displacement transducer has the following specifications: Linearity error: ±0.25% reading Drift: ±0.05%/°C reading Sensitivity error: ±0.25% reading Excitation: 10-25 V dc Output: 0-5Vdc Range: 0-5 cm The transducer output is to be indicated on a voltmeter having a stated accuracy of 0:1% reading with a resolution of 10 μV. The system is to be used at room temperature, which can vary by 10 °C. Assume 95% confidence. The displacement transducer above is used in measuring the displacement of a body impacted by a mass. Twenty measurements are made, which yield X= 17.20mm Sx= 1.70mm Determine a best estimate for the mass displacement at 95% probability based on all available information.
- 1-Explain how the accelerometer works in a car. How does the acceleration signal looks like in an emergency condition. How the acceleration measurement is obtained. 2-Analyse the car suspension system. Provide real life system parameters. Assume the shape of a road bump and car speed, and then find the car body position amplitudeSelect the correct answer9. One criterion for decision-making in the detection process is to opt for the minimum...A. fidelity.B. phase.C. SNR.D. Euclidean distance.1. The equation of motion for a vibrating system with viscous damping isd2x/dt2 + c/m X dx/dt + s/m X x = 0If the roots of this equation are real, then the system will bea) over dampedb) under dampedc) critically dampedd) none of the mentioned