Question

record the main scale reading and vernier coincidence.

calculate the diameter using formula Diameter= main scale reading+(vernier coincidencex LC) - ZE.

LC= 0.05

ZE= 0

Խանասնահատականանասնականանամական 0 1 2 3 4 5

Answer 1

SOLUTION:

| 10 M.S.R=17 mm neearly | * 20 ° coingae, 7 , Illlllllllllllllllllll {") 3 4 5" 6 ՝ 0.05mm .

We know that the vernier scale reading is given by:

Diameter = M.S.R+ (V.C x L.C) - Z.E

M.S.R - Main scale reading - Taken as the value just before zero on vernier scale (shown in figure).

V.C - Vernier coincidence - At a particular point, vernier scale measurement coincide with main scale, this value on vernier scale is taken as Vernier coincidence.

L.C - Least count - Least possible measurement in vernier caliper (1 M.S.R /no.of divisions on Vernier scale)

Z.E - Zero error.

Here, Least count is given by:

M.S.R L.C = 10 mm - = 0.05 mm 20

M.S.R = 17 mm.

V.C = (5 x 2) +1 = 11.

Z.E = 0 mm

Therefore, diameter is given by:

Diameter = M.S.R+ (V.C x L.C) - Z.E

:. Diameter = 17 mm + (11 x 0.05 mm) – 0 mm

:: Diameter = 17 mm + (0.55 mm)

:. Diameter = 17.55 mm