Major Categories Of Error
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understand statements with syntax errors (just as you cannot understand sentences with grammatical errors), it is able to detect them as soon as you write them. The following types of error in programming subprogram has three syntax errors. As you see, the syntax errors are indicated types of error in physics by a squiggly blue line. If you move the cursor over the blue line, the VB.NET development system displays an
Types Of Errors In Measurement
explanation of the syntax error, as shown below. In this case, the error message states that the programmer has not created an object called "labelone." The programmer probably meant to type "label1". In
Types Of Error In Chemistry
this case, the error message states that Labels do not have "Tuxt" properties -- the programmer probably meant to type "Text". In this case, the programmer is attempting to assign a numeric (integer) value to a string property. The programmer probably meant to type "14". Syntax errors are easy to find and correct because the development system finds them for you. If you write a statement types of error in experiments that is syntactically correct, the computer will understand and execute it. However, if you accidently told it to do something that you did not really intend, you would have made a logical or semantic error. For example, if a programmer accidently multiplies two variables when he or she meant to divide them, the program will give an incorrect result, but no error message. Syntax errors are errors of grammar; whereas, logical or semantic errors are errors of meaning. Run time errors are detected while the program executes. These are often discovered when the user enters illegal data. For example, if the user types in a string when the computer expects a number, there will be a runtime error: When running a payroll program, the user entered "ten" instead of "10" for the hours worked. When the computer tried to multiply the pay rate by "ten", it generated the error message shown above. Since the computer cannot generate an error message when you make a logical error, they are generally hardest to fix. Patiently stepping through the execution of the program will often help you find your error. We will also see debugging aids in the development system.
of this type result in measured values that are consistently too high or consistently too low. Systematic errors may be of four kinds: 1. Instrumental. For example, a poorly calibrated instrument such
Types Of Errors In Computer
as a thermometer that reads 102 oC when immersed in boiling water and types of programming errors in java 2 oC when immersed in ice water at atmospheric pressure. Such a thermometer would result in measured values that are types of errors in programming with examples consistently too high. 2. Observational. For example, parallax in reading a meter scale. 3. Environmental. For example, an electrical power ìbrown outî that causes measured currents to be consistently too low. 4. http://bpastudio.csudh.edu/fac/lpress/vbmodules/hdts/errors.htm Theoretical. Due to simplification of the model system or approximations in the equations describing it. For example, if your theory says that the temperature of the surrounding will not affect the readings taken when it actually does, then this factor will introduce a source of error. Random Errors Random errors are positive and negative fluctuations that cause about one-half of the measurements to be http://www.physics.nmsu.edu/research/lab110g/html/ERRORS.html too high and one-half to be too low. Sources of random errors cannot always be identified. Possible sources of random errors are as follows: 1. Observational. For example, errors in judgment of an observer when reading the scale of a measuring device to the smallest division. 2. Environmental. For example, unpredictable fluctuations in line voltage, temperature, or mechanical vibrations of equipment. Random errors, unlike systematic errors, can often be quantified by statistical analysis, therefore, the effects of random errors on the quantity or physical law under investigation can often be determined. Example to distinguish between systematic and random errors is suppose that you use a stop watch to measure the time required for ten oscillations of a pendulum. One source of error will be your reaction time in starting and stopping the watch. During one measurement you may start early and stop late; on the next you may reverse these errors. These are random errors if both situations are equally likely. Repeated measurements produce a series of times that are all slightly different. They vary in random vary about an average value. If a systematic error is also included for example, y
Menu HOME interview Questions MCQs *LAB VIVA CLASS http://engineeringinterviewquestions.com/what-are-the-three-major-categories-of-error-electrical-measurements-lab-viva/ NOTES SEMINAR TOPICS ONLINE TEST GATE IIT JEE CAT Home » ELECTRICAL MEASUREMENTS LAB VIVA Questions and Answers » what are the three major categories of error? | ELECTRICAL MEASUREMENTS LAB VIVA what of error are the three major categories of error? | ELECTRICAL MEASUREMENTS LAB VIVA Posted on August 16, 2015 by engineerLeave a comment Error may arise from different sources and are usually classified as 1 Gross types of error error 2. Systematic error 3. Random error Posted in ELECTRICAL MEASUREMENTS LAB VIVA Questions and Answers Post navigation ←what is Error of a measurement? | ELECTRICAL MEASUREMENTS LAB VIVAwhat is gross error? | ELECTRICAL MEASUREMENTS LAB VIVA→ Leave a Reply Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website Loading Engineering Questions Facebook Find us on Google Plus Engineering interview questions,multiple choice questions,objective type questions,seminor topics,lab viva questions and answers ,online quiz test pdf free download for freshers. Terms & Conditions | Privacy Policy | Contact us | About us