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tinminhtoo
02-03-2012, 07:42 PM
MEF ညီအကိုေမာင္ႏွမမ်ားခင္ဗ်ား...........ဒါေလးလဲေဆြးေႏြးရင္ေကာင္းမယ္ထင္လို့.......အားလံုးေနာ္ဝင္ေရာက္ေဆြးေႏြးေပးပါဦးလို့

tinminhtoo
02-03-2012, 11:01 PM
ဒါက......mef ညီအကိုေမာင္ႏွမမ်ားေလ့လာခ်င္သူမ်ားအတြက္............Engineering measurements methods and intrinsic errors............စာအုပ္ျဖစ္ေၾကာင္းပါခင္ဗ်ား:ranger:
http://ifile.it/lbhnw45/Engineering.Measurements.Methods.and.Instrinsic.Errors.eBook.rar

tunaungkyaw
02-06-2012, 09:39 PM
MEF ညီအကိုေမာင္ႏွမမ်ားခင္ဗ်ား...........ဒါေလးလဲေဆြးေႏြးရင္ေကာင္းမယ္ထင္လို့.......အားလံုးေနာ္ဝင္ေရာက္ေဆြးေႏြးေပးပါဦးလို့

ကိုtinminhtoo ကသာ စလိုက္ပါဗ်ာ။ ညီအကို ေမာင္ႏွစ္မေတြ ပါ၀င္ေဆြးေႏြးႀကမွာပါ။

zawmyinthtoo07
07-11-2012, 04:01 PM
I would like to describe measurement error as much as I keep information.
Errors in Measurement :


Error = Measured Value – True Value

Em = Vm - Vt

1. Absolute Error :



True absolute error :

= Result of measurement – True Value

Apparent Absolute error :

= Result of measurement – Arithmetic Value

2. Relative error :

It is defined as the results of the absolute error and the value of comparison used for 450

calculation of that absolute error.
Causes of Errors :

1. Calibration Error:

These are caused due to the variation in the calibrated scale from it’s normal value.

2. Environmental Error :

These are caused due to humidity condition,Temperature and altitude.

3. Assembly Error:

i. Displaced Scale (incorrect Fitting)

ii. Non –uniform division of the scale.

iii. Due to bent /distorted pointer.

4. Random Error:

Naturally Occurred

No specific reasons



5. Chaotic errors :

These are caused due to vibrations,noises and shocks.



6. Systematic errors (or) Bias errors:

These are caused due to repeated readings.

AndrewSway
07-11-2012, 08:17 PM
6. systematic errors (or) Bias error ကို ေတာ ့ အသိမွားျခင္း အမွတ္မွားျခင္း မွားယြင္းေသာအယူအဆကို မွန္ကန္သည္ဟု ယံုၾကည္မိျခင္းတုိ ့ ေၾကာင္ ့ျဖစ္တယ္လို ့သင္ခဲ ့ဘူးပါတယ္။ error အားလံုးထဲမွာ ျပင္ရ အခက္ဆံုး error လို ့လည္း သင္ခဲ ့ရပါတယ္။