Theory and Design for Mechanical Measurements
6th Edition
ISBN: 9781118881279
Author: Richard S. Figliola, Donald E. Beasley
Publisher: WILEY
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Textbook Question
Chapter 1, Problem 1.13P
Develop a test plan that might be used to estimate the average temperature that could be maintained in a heated room as a function of the heater thermostat setting.
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Truncation errors are increased as the round-off errors are decreased.Group of answer choices True False
Say, you have a thermometer and you are checking the temperature of a body that has a temperature of 36o Using your thermometer five times, it gives you the following measurements: 29oC, 29.2oC, 29.3oC, 28.9oC, and 29.1oC. What can we conclude about the accuracy and the precision of the thermometer?Group of answer choices The thermometer is not accurate and not precise The thermometer is faulty. The thermometer is accurate and precise The thermometer is not accurate but precise.
Say, you have a thermometer and you are checking the temperature of a body that has a temperature of 36o Using your thermometer five times, it gives you the following measurements: 36oC, 35.6oC, 36oC, 37oC, and 36.2oC. What can we conclude about the accuracy and the precision of the thermometer?Group of answer choices The thermometer is accurate and precise. The thermometer is accurate but not precise. The…
Task 3-a:
If you have four instruments used to measure a temperature of 50.02 C inside the factory. However, the
instruments gave different readings for different trials as follows:
Instrument 1 20
30
40
50
60
70
80
51
49
Instrument 2 49
49
49
49
49
49
49
49
49
Instrument 3 48.01
48.03
49.02
49.01
50.00
48.02
47.09
47.05
47.80
Instrument 4 17.01
17.02
17.09
17.03
17.01
17.03
15.09
19.02
17.00
1. Define the resolution of an instrument.
2. Define the sensitivity of an instrument, then explain how the sensitivity of an instrument can
be calculated.
3. Define the accuracy of an instrument system and explain using your own words how the
accuracies of different instruments are compared.
4. Define the precision of an instrument system and explain using your own words how the
precisions for different instruments are compared.
Physical Applications of 1st Order DE
At 1:00 p.m., a thermometer reading 70 0F is taken outside where the air temperature is -10 0F (ten below zero). At 1:02 p.m., the reading is 26 0 At 1:05 p.m., the thermometer is taken back indoors where the air is at 70 0F. What is the thermometer reading at 1:09 p.m.?
Chapter 1 Solutions
Theory and Design for Mechanical Measurements
Ch. 1 - Prob. 1.1PCh. 1 - Prob. 1.2PCh. 1 - Prob. 1.3PCh. 1 - Prob. 1.4PCh. 1 - Prob. 1.5PCh. 1 - Discuss how the resolution of the display scale of...Ch. 1 - Prob. 1.7PCh. 1 - Prob. 1.8PCh. 1 - Prob. 1.9PCh. 1 - Prob. 1.10P
Ch. 1 - State the purpose of using randomization methods...Ch. 1 - Provide an example of repetition and replication...Ch. 1 - Develop a test plan that might be used to estimate...Ch. 1 - Develop a test plan that might be used to evaluate...Ch. 1 - A race engine shop has just completed two engines...Ch. 1 - A thermodynamics model assumes that a particular...Ch. 1 - Regarding the Mars Climate Orbiter spacecraft...Ch. 1 - A large batch of carefully made machine shafts can...Ch. 1 - Suggest an approach or approaches to estimate the...Ch. 1 - Suggest a test matrix to evaluate the wear...Ch. 1 - Figure 1.15 Orifice flow meter setup used for...Ch. 1 - The sale of motor fuel is an essential business in...Ch. 1 - Using either the ASME 19.5 or ISO 5167 test...Ch. 1 - A simple thermocouple circuit is formed using two...Ch. 1 - 1.25 A linear variable displacement transducer...Ch. 1 - For the LVDT calibration of the previous problem,...Ch. 1 - A manufacturer wants to quantify the expected...Ch. 1 - Prob. 1.28PCh. 1 - As described in a preceding problem, the...Ch. 1 - Light gates may be used to measure the speed of...Ch. 1 - You estimate your car’s fuel use by recording...Ch. 1 - When discussing concomitant methods, we used the...Ch. 1 - Prob. 1.33PCh. 1 - For the strain gauge calibration of the previous...Ch. 1 - The acceleration of a cart down a plane inclined...Ch. 1 - In general, what is meant by the term “standard”?...Ch. 1 - A common scenario: An engineer has two pencil-...Ch. 1 - Explain the potential differences in the following...Ch. 1 - Research the following test standards and codes....Ch. 1 - A hotel chain based in the United States contracts...Ch. 1 - Test code ASTM 558-13 allows for the comparison of...Ch. 1 - Suggest a reasonable number of significant digits...Ch. 1 - Using spreadsheet software (such as Microsoft...Ch. 1 - Prob. 1.44PCh. 1 - Round the following numbers to 3 significant...Ch. 1 - Express the result, rounding to an appropriate num...Ch. 1 - Express the result by rounding to an appropriate...Ch. 1 - A car’s speed is determined by the time it takes...Ch. 1 - How much error could you tolerate in (1) book...Ch. 1 - Apply the guidelines to determine the number of...Ch. 1 - Using a tape measure having 1 mm graduations, the...Ch. 1 - Show how the following functions can be...Ch. 1 - Prob. 1.53PCh. 1 - For the calibration data of Table 1.5, determine...Ch. 1 - Prob. 1.55PCh. 1 - Each of the following equations can be represented...Ch. 1 - Plot y = 10e“° 5x volts on in semilog format (use...Ch. 1 - Prob. 1.58PCh. 1 - Prob. 1.59P
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Q.1 a. Repeatability and reproducibility are ways of measuring precision, particularly in the field of engineering. i. What is an engineer's expectation when performing repeatability or reproducibility? ii. State a difference between repeatability and reproducibility in an experiment? b. Figure Q.1 shows the measurement data of two types of thermal transducers namely thermocouple. Турe E Туре К 6.8 4.2 20 40 60 80 100 Temperature Difference (°C) Voltage Output (mV)arrow_forwardA. A student establishes the time constant of a temperature sensor by first holding it immersed in hot water and then suddenly removing it and holding it immersed in cold water. Several other students perform the same test with similar sensors. Overall, their results are inconsistent, with estimated time constants differing by as much as a factor of 1.2. Offer suggestions about why this might happen. Hint: Try this yourself and think about control of test conditions. B. Which would you expect to be better suited to measure a time-dependent temperature, a thermal sensor (e.g., a thermocouple) having a small diameter spherical bead or one having a large diameter spherical bead? Why?arrow_forwardif a measurement systems gives only a small spread of readings when repeated readings are taken of the same quantity, then what characteristics does the system have? a.High sensitivity b.High precision c.High repeatability d.High Producibilityarrow_forward
- Let us assume that a data center has a power usage effectiveness of 2.2. You will decrease the power amount by cooling the system by %40 using surrounding air cooling. What would be the best possible PUE which can be accomplished?arrow_forwardq4 From the following identify the true statement relating to the term Predictive maintenance The maintenance on machines to determine the actual time to failure and cannot improve the quality of the product. The maintenance on machines not to determine the actual time to failure and can improve the quality of the product. The maintenance on machines to determine the actual time to failure and can improve the quality of the product. The maintenance on machines not to determine the actual time to failure and cannot improve the quality of the product.arrow_forwardIdentify the measurement system stages for the following systems (refer back to Figure 1.5 and useother resources, such as a library or Internet search, as needed to learn more about each system):a. Room thermostatb. Automobile speedometerc. Portable CD stereo systemd. Antilock braking system (automobile)e. Automobile cruise controlf. Throttle position sensor for a Formula One race cararrow_forward
- 12q Read the following statement and choose the most appropriate answers. Statement 1 Closeness of the output reading for the same input reading for repetitive reading over a short time with the different observer is known as precision. Statement 2 During the measurement process how close the output reading of the instrument to the correct value is known as accuracy. Statement 1 is false and the statement 2 is true Both Statements are true Both Statements are false Statement 1 is true and the statement 2 is Falsearrow_forwardA new electronic component for aircraft is tested to withstand temperatures as low as -50°F. One engineer suggests that the device cannot actually stand temperatures that low. What are the Type I and Type II errors? Type I: The device CAN NOT withstand temperatures as low as -50F but the engineer incorrectly finds that it CAN.Type II: The device CAN withstand temperatures as low as -50F but the engineer incorrectly finds that it CAN NOT. Type I: The device CAN withstand temperatures as low as -50F but the engineer incorrectly finds that it CAN NOT.Type II: The device CAN NOT withstand temperatures as low as -50F but the engineer incorrectly finds that it CAN. Is the answer the first or second bullet point?arrow_forwardA thermoeleman circuit given as voltage-temperature correlation E=a·T will measure the temperature in an environment, T1 = 290ºC > T2 > T3 = 0ºC. This thermoeleman produces a voltage of 16.32 mV at (T1-T3) temperature awareness and 15.3 mV at (T1-T2) temperature awareness. How many ºC is T2 temperature? a. 18.64 b. 18.75 c. 20.00 d. 19.97 e. 18.13arrow_forward
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