Wear and ageing – some elements are characterized by the output increasing in a series of discrete steps or jumps in response to a continuous increase in input. Resolution is defined as the largest change in the output. Wear and ageing – This effects can cause the characteristics of an element, e.g. K and a, to change slowly but systematically throughout its life. Wear and ageing – effects in many modern sensors and transducers are so small that it is difficult to exactly quantify each individual effect. In this cases the manufacturer defines the performance of the element in terms of error bands.

Wear and ageing – some elements are characterized by the output increasing in a series of discrete steps or jumps in response to a continuous increase in input. Resolution is defined as the largest change in the output. Wear and ageing – This effects can cause the characteristics of an element, e.g. K and a, to change slowly but systematically throughout its life. Wear and ageing – effects in many modern sensors and transducers are so small that it is difficult to exactly quantify each individual effect. In this cases the manufacturer defines the performance of the element in terms of error bands.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

PIoVide ue comect u We want to design an experiment to measure oscillations of a simple pendulum on the surface of Jupiter with acceleration due to gravity g= 30 ms 2. We have to make do with a rudimentary video camera with a frame rate of 15 Hz to record oscillations in a pendulum and use it to measure the frequency of oscillation. The smallest length of the pendulum that we can send so that the correct oscillation frequency can be measured is cm. Assume perfect spatial resolution of the camera and ignore other "minor" logistical difficulties with this experiment.
Consider the Exponential Weighted Moving Average that is used to estimate the Round Trip Time (RTT) of a TCP segment. The formula is: EstimatedRTT = (1 - A) * EstimatedRTT + A * SampleRTT Which of the following values of A gives the greatest weight to the most recent samples of round trip times? a. A = 0.25 O b. A = 0.8 О с. А%3D 0.5
A nearsighted eye is corrected by placing a diverging lens in front of the eye. The lens will create a virtual image of a distant object at the far point (the farthest an object can be from the eye and still be in focus) of the myopic viewer where it will be clearly seen. In the traditional treatment of myopia, an object at infinity is focused to the far point of the eye. If an individual has a far point of 39.5 cm, prescribe the correct power of the lens that is needed. Assume that the distance from the eye to the lens is negligible.
The rapid progress of engineering design and information technology has caused difficulties in analyzing system reliability. Because of the increased complexity in system reliability structure (component/subsystem interfaces), many unexpected failure modes could occur, and their behaviors are interdependent. At a system’s design and development stage, the main challenge in analyzing a complex system is the failure uncertainty introduced by the incomplete knowledge of the system. This makes it hard to decompose system reliability into subsystem/component reliability in a deterministic manner, such as series or parallel systems. As a result, some common reliability analysis tools such as fault tree (FT) and reliability block diagram (RBD) become inadequate. Do you agree, why or why not? Are there any other approaches to system reliability assessment beside these tools at the early system’s design and development stage (what are these approaches)?
An unmanned submarine is equipped with temperature and depth measuring instruments and has radio equipment that can transmit the output readings of these instruments back to the surface. The submarine is initially floating on the surface of the sea with the instrument output readings in steady state. The depth measuring instrument is approximately zero order and the temperature transducer first order with a time constant of 50 seconds. The water temperature on the sea surface, , is 20 °C and the temperature at a depth of x meters is given by the relation: If the submarine starts diving at time zero, and thereafter goes down at a velocity of 0.5 meters / second, draw a table showing the temperature and depth measurements reported at intervals of 100 seconds over the first 500 seconds of travel. Show also in the table the error in each temperature reading.What temperature does the submarine report at a depth of 1000 meters?
r:09 moodle1.du.edu.om An application demands that sinusoidal pressure variation of 250 Hz be measured with no more than 2% dynamic error. In selecting a suitable pressure transducer from vendor catalog, you note that a desirable line of transducer has a fixed natural frequency of 500 Hz but that you have a choice of transducer damping ratio of between 0.5 and 1.5 in increments of 0.05. select a suitable transducer. The value of damping ratio is between the following values Select one: O a. 0.707 and 0.807 O b. 0.631 and 0.692 c. 0.2356 and 0.5625 d. 0.5215 and 0.5625 Previous page Next page 1 Assignmen II
4:07 3G l. Moodle A bbb2.du.edu.om EE ...Session (15-3- Said Grami O College of Engineering Vision for the Future Question 3 During a step function calibration, a first-order instrument is exposed to a step change of 200 units. 1- If after 1.5 s the instrument indicates 140 units, find the instrument time constant. 2- find the error in the indicated value after 2 s S. 3- Find the raise time at 90 % of the system. y(0)=0 units; K=1 unit/unit. Question 4 A first order instrument with a time constant of 2 seconds is to be used to measure a periodic input. If a dynamic error of ±2% can be tolerated, 1- determine the maximum frequency of periodic input that can be measured. 2- What is the associated time lag (in seconds) at that frequency? MECH374: Instrumentation and Measurement Said Grami Practice
A chamber of unknown volume is filled with an unknown amount of ideal gas. A cylinder with an open bottom and calibrated volume is connected to the chamber and is closed with a movable piston. A gas pressure sensor is also mounted on the chamber as shown in the figure. The whole experimental setup is kept at a constant temperature of 300 K. Doris moves the piston from mark 0 to mark 200 mL in steps of 50 mL and records the corresponding pressure in the chamber (see the table below). She moves the piston very slowly and waits several minutes before recording the pressure values. VCyl(mL) P(105N/m2)) 0 4.35 50 3.85 100 3.50 150 3.15 200 2.90 Determine the volume of the chamber using Doris's data in the table. (Note: This is a problem that requires linearization of data.) Determine the number of moles of gas. (Note: This is a problem that requires linearization of data.)
Time series patterns that repeat themselves after a period of days or weeks are called Select one: O a. Random variation O b. Cycles O C. Trend O d. Seasonality hp
2) A device used in a ground radar system has age to failure that is described approximately by a Weibull distribution with mean life 83 h, shape parameter 1.5, and location parameter zero. When it fails it takes on average 3.5 h to repair: a) Calculate the reliability over a 25 h period, and the 'steady state' availability of the device. b) Calculate the reliability over 25 h, and the ‘steady state' availability of a subsystem that consists of two of these devices in active parallel redundancy.
Answer the following questions based on scaling arguments, i.e., by applying “the variable X must be proportional to the Zth power of variable Y because of some relevant physical principle”-type reasoning. A. In a surface passivation process for Si wafers, the required processing time to create a 0.1 micron thick SiO2 layer on a pure Si wafer was 2 hours. Estimate the process time required to create an SiO2 layer of thickness 0.15 microns on a pure Si wafer under identical processing conditions. B. A puddle of volatile liquid of initial thickness of 1 cm was found to evaporate to form a thinner 0.5 cm layer in 1 day. How much longer would it take for the liquid layer to evaporate completely?
You’re testing a system that involves a fan, water pump, and compressor. The components are turned ON in sequence and sensor readings are taken, as per a written protocol that you’re following. The system is running as expected after the fan and water pump are turned ON. However, when you turn ON the compressor, it runs for about thirty seconds then stops, consistently. Swapping out the compressor for a different one seems to solve the problem. What could have been the issue with the bad compressor?