Advertisements
Advertisements
प्रश्न
What do you understand by the following term as applied to screw gauge?
Positive zero error
Advertisements
उत्तर
Positive zero error: If the zero of the circular scale is below the reference line of the main scale, then the screw gauge is said to have positive zero error and the correction is negative.
APPEARS IN
संबंधित प्रश्न
Describe in steps, how would you use a vernier callipers to measure the length of a small rod?
Name the part of the vernier callipers which is used to measure the following
Depth of a small bottle
A boy uses a vernier callipers to measure the thickness of his pencil. He measures it to be 1.4 mm. If the zero error of vernier callipers is +0.02 cm, what is the correct thickness of the pencil?
(a) A vernier scale has 10 divisions. It slides over the main scale, whose pitch is 1.0 mm. If the number of divisions on the left hand of zero of the vernier scale on the main scale is 56 and the 8th vernier scale division coincides with the main scale, calculate the length in centimetres.
(b) If the above instrument has a negative error of 0.07 cm, calculate the corrected length.
The least count of a vernier callipers is 0.01 cm and it has an error of + 0.07 cm. While measuring the radius of a sphere, the main scale reading is 2.90 cm and the 5th vernier scale division coincides with the main scale. Calculate the correct radius.
What is the need for measuring length with vernier callipers?
A micrometre screw gauge has a negative zero error of 8 divisions. While measuring the diameter of a wire the reading on the main scale is 3 divisions and the 24th circular scale division coincides with baseline.
If the number of divisions on the main scale are 20 to a centimetre and circular scale has 50 divisions, calculate
- pitch
- observed diameter.
- least count
- corrected diameter.
What do you understand by the following term as applied to micrometre screw gauge?
Sleeve cylinder
What is the function of ratchet in the screw gauge?
