Define leastcount of a screw gauge
Define pitch
What is backlash error? How is it avoided?
What is zero error? How is it determined?
When do you say that the zero error is positive or negative?
What are random errors? How can you minimise them?
What is the use of ratchet in a screw gauge?
Answers
Answer:
A screw gauge of 100 divisions will move the cap scale along the main scale by 1/100 of mm-0.01 mm. This is the minimum value up to which a screw gauge can measure and is known as its least count. Or it is defined as the ratio between the pitch of the screw and the number of divisions on the circular scale
a special area of ground where you play certain sports
The backlash error can be avoided by rotating the screw in one direction only. however if it is essential to turn the direction of the rotation then do not change the direction abruptly . move the screw still further ,stop there for a while and then rote it in reverse direction
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.
Positive Error: When the two jaws are in contact and the zero of the vernier lies right to the zero of the main scale, the error is positive and the zero correction is negative.
Random errors can be evaluated through statistical analysis and can be reduced by averaging over a large number of observations. Systematic The cloth tape measure that you use to measure the length of an object had been stretched out from years of use. (As a re- sult, all of your length measurements were too long.)
The function of ratchet in screw-gauge is to advance the screw by turning it till the object is gently held between the stud and spindle of the screw.
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Explanation:
Answer:
A screw gauge of 100 divisions will move the cap scale along the main scale by 1/100 of mm-0.01 mm. This is the minimum value up to which a screw gauge can measure and is known as its least count. Or it is defined as the ratio between the pitch of the screw and the number of divisions on the circular scale
a special area of ground where you play certain sports
The backlash error can be avoided by rotating the screw in one direction only. however if it is essential to turn the direction of the rotation then do not change the direction abruptly . move the screw still further ,stop there for a while and then rote it in reverse direction
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.
Positive Error: When the two jaws are in contact and the zero of the vernier lies right to the zero of the main scale, the error is positive and the zero correction is negative.
Random errors can be evaluated through statistical analysis and can be reduced by averaging over a large number of observations. Systematic The cloth tape measure that you use to measure the length of an object had been stretched out from years of use. (As a re- sult, all of your length measurements were too long.)
The function of ratchet in screw-gauge is to advance the screw by turning it till the object is gently held between the stud and spindle of the screw.
Plz mark as brainliest