When the edge of the circular scale lies to the left of O...

When the edge of the circular scale lies to the left of O mark on the main scale, when the stud and spindle touch each other, Then what will be the zero error?
(A) zero error is negative
(B) zero error is positive
(C) zero error does not exist
(D) zero correction is negative

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Zero Error

Zero error is the difference between the actual zero position of a measuring instrument and the true zero value. It manifests as an offset that must be accounted for to ensure accuracy in measurements, and it typically arises from slight misalignments in the instrument's zero reading.

Sign Convention in Measurement Errors

In measurement error analysis, the sign indicating whether an error is positive or negative is determined by the direction of the misalignment. A negative zero error occurs when the instrument’s zero indication falls below the true zero mark, meaning that the readings are lower than the actual values, while a positive zero error indicates the opposite.

Error Correction in Precision Instruments

Precision instruments such as those employing circular or vernier scales must be calibrated for zero error. Recognizing whether the error is positive or negative is crucial, as it determines the direction and magnitude of the correction to be applied to the measured values for obtaining true readings.

Please give Ace some feedback