0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What is zero error in physics?
Zero error is defined as the condition where a measuring instrument registers a reading when there should not be any reading. In case of Vernier calipers it occurs when a zero on main scale does not coincide with a zero on Vernier scale. Source: calculatored and written by Shaun Murphy
What is the precision and the greatest possible error of 20400L?
The precision of integers with trailing zeros is ambiguous. The precision of 20400 litres can be 1, 10 or 100. Corresponding to these values, the greatest possible errors can be 0.5L, 5L or 50L. Actually, the precision could even be 20400L, in which case the maximum possible error is 10200L. If, for example, you had tanks of 20400L each, you might simply know how many tanks' worth you had - precision to 20400L. Unlikely, though.
Is a torque wrench a precision instrument?
Yes, a torque wrench is a precision instrument (or tool). -If damaged or even slightly bent it may give incorrect readings. It should always be kept in a separate case or box, nut just flung in a toolbox with over heavy tools (as I sometimes see)
What is the difference between accuracy and precision and which is most important to scientific measurement?
Both accuracy and precision are important to scientific measurement. I'll try to explain the difference with a couple of illustrations. I should start by saying, sometimes the words are used interchangeably but they shouldn't be. I consider precision to mean resolution. That is how fine/small a reading you can get.Assume an electronic thermometer (digital display) can display answers to the nearest one hundredth of a degree. But, the thermometer isn't able to measure with that accurately. Maybe it's only accurate to the nearest whole degree. In this case the precision is greater than is supported by the accuracy of the device.Now take the opposite case where the thermometer is able to measure temperature accurately to one hundredth of a degree but the instrument can only display whole degrees. In this case the precision does not support the accuracy.Ideally the accuracy and precision of an instrument are the same but often that's not the case.
Which instrument would you use to measure water for recipe?
A measuring cup or jug. Unless you want a very small quantity in which case a tablespoon, teaspoon. Except that most people who cokok would not - you just use your judgement.
What is CT burden in electrical engineering?
CT (current transformer) Burden is the maximum load that the CT secondary can drive (e.g. meters or protection relays) Why do you care about burden when ordering current transformers? The burden is the termination impedance of the measuring instrument. The measuring instrument can be an analog or digital energy meter, a data logger or a recorder. All instruments that use a current transformer to measure line current must terminate the CT with a resistance (impedance in same case which means there is some inductance involved). A CT supplier should be given the burden when ordering. Technically, the total burden for a CT is the internal winding resistance, the connecting lead resistance and the measuring instrument input resistance. Some Ct's are installed a long distance from the measuring instrument and the connecting leads can have a resistance as much as 0.002 ohms per foot (both ways because the current makes a complete round trip). This resistance will cause an error if not taken into account.
What is the greatest possible error of 3.5 cm?
first you must find the precision. that is the smallest possible unit of the smallest measurement. in this case the smallest measurement is 5/10ths. the smallest possible unit is 1/10. so 1/10 is the precision. to find the greatest possible error you have to multiply the precision (1/10) by 1/2. and you get 1/20. the greatest possible error is 1/20. another example: find the greatest possible error of both 6 and 3.214. for 6 the smallest unit would be 1 because you can go lower than one without going to the next unit down. so we then take one and multiply it by 1/2. one half is also 0.5. 1 multiplied by 1/2 is 1/2, therefore, the greatest possible error of 6 is 1/2 or 0.5. for the next number take the smallest unit of 214/1000, which is what .214 is. the smallest measurement would be 1/1000. that is our precision. the greatest possible error is one half (1/2) of the precision, or, 1/1000 x 1/2, which equals 1/2000. the greatest possible error of 3.214 is 1/2000. it's kind of confusing. i hope this helped. first it helps to understand the precision. then from there the gpe is half of the precision.
Parallax error how it can be avoided?
I'm assuming you're measuring somethings' displacement along a scale. There are three simple ways of reducing parallax error in that case: 1: Attach a straight object (like a ruler or straightened paperclip) to the thing you're measuring the displacement of, it should stick out of the object perpendicularly to the scale you're measuring the displacement on. 2: Make sure that object is as close to your scale as possible, but not touching. 3: Put your eyes level with the object, and as close to it as you safely can.
Which digit in the following number is the one that determines its precision 10.846?
If a number is given to the true degree of precision, this is always determined by its last digit - in this case, 6.
What is a precise measurment?
A precise measurement is an exact measurement.How long,how tall how wide. EXAMPLE-12X5X24Precision refers how close measurements of the same thing are to each other. A precise measurement is one that is similar or the same as previous measurements. A precise measurement does not need to be accurate.precise measurements may not be accurate but will agree with each other. Characteristic of precision is low standard deviation. It is not in all cases proof of accuracy though
Which digit in the following number is the one that determines its precision 234.896?
In this case with 234.896 the last digit, '6' determines the precision since in is the last non-zero digit.
How do you convert a whole number to a decimal?
You can add zeroes after the decimal point. For example, 8 = 8.0 = 8.00. Note, however, that if this is used as a measurement, the extra zeroes indicate a greater precision. In this case, if you add zeroes, the number is the same, but the assumed precision is greater.You can add zeroes after the decimal point. For example, 8 = 8.0 = 8.00. Note, however, that if this is used as a measurement, the extra zeroes indicate a greater precision. In this case, if you add zeroes, the number is the same, but the assumed precision is greater.You can add zeroes after the decimal point. For example, 8 = 8.0 = 8.00. Note, however, that if this is used as a measurement, the extra zeroes indicate a greater precision. In this case, if you add zeroes, the number is the same, but the assumed precision is greater.You can add zeroes after the decimal point. For example, 8 = 8.0 = 8.00. Note, however, that if this is used as a measurement, the extra zeroes indicate a greater precision. In this case, if you add zeroes, the number is the same, but the assumed precision is greater.
