051/2019

1. Least count of vernier micrometer is 5
(ಹ) 0.01 mm (B) 0.02 mm (ಲ) 0.001 mm (D) None of these

2. Ina double cut file, one cut is at an angle of 70°. What is the angle of the other cut ?
(ಹಿ) 45 (B 65 © 75 (D) ೫

3. Ra value in microns for Roughness Number N4 is s
(ಹಿ) 0.2 ® o1 © 5 © 5

4, VVVis the Roughness symbol for Roughness grade number
(A) N1 ®) N3
(~) N5 (D) None of the above

5. In assemblies, the parts are located by using taper pins. What is the taper of 5008 0175?
(ಹಿ) 0 ൫ 1:40 © 1:50 (D) 1:20

6. Vernier micrometer have additional equally spaced vernier graduations given above the
datum line, The no. of such vernier graduations are

മട ® 10 © 25 (D) 50

7. Adjustable caliper gauges are used for
(ಹ) Checking the accuracy of vernier calipers
(B) Checking the size of a caliper
(ಲ) Checking internal diameters of parts
(D) Checking external diameters of parts

8. The process of chemical reduction of the iron ore to pig iron is known as s
(ಹ) Melting (B) Refining (C) Smelting (D) Purification

9, The furnace used for the manufacturing of steel from pig iron is known as

(A) Puddling furnace (8) Blast furnace
(~) Bessemer furnace (D) None of the above
A 3

{P.T.O}