DGCA Paper 2 Question bank Downloads

1.      Titanium is heat treated for following purpose

a)      Thermal hardening to improve strength

b)      Annealing offer hot working and cold working to provide maximum ductility for subsequent cold working

c)      Both a & b

d)     None

2.      The normal soldering technique of A1 is

a)      Similar to that of the other material

b)      Differ to control the expansion and contraction of metal

c)      Differ to the extent a low heat input is required

d)     Both b & c is correct

3.      Flux is used in welding of N-alloy is for

a)      better penetration

b)      fid to oxidation

c)      for better fusion

d)     slow down the flow of molten metal

4.      Flux used in silver soldering is

a)      Zinc chloride

b)      Orthophaspheric acid

c)      Sulphuric acid

d)     All are correct

5.      Rust is steel is removed by

a)      Wire brush

b)      Emery paper

c)      Controlled sand blasting

d)     All are correct

6.      Barcol tester is used on

a)      harder material

b)      softer material

c)      all type of material

d)     none

7.      I-beam is produced by

a)      Extruding

b)      Forging

c)      Csting

d)     Hot rolling

8.      Which one is stable wrought alloy

a)      piston

b)      cylinder head

c)      crankshaft

d)     alclad

9.      The load per unit square inch at which material breaks

a)      ultimate tensile strength

b)      yield point

10.  Ultrasonic testing is used to check

a)      fatigue crack

b)      disbond

c)      weld and inclusion on cast

d)     all are correct

11.Which statement is correct regarding sensitivity of the x-rays

a)      The darkness of radiograph does not depend on the radiation penetrating in the cylinder

b)      Thicker the specimen, lighter the image

c)      Thicker the specimen, darker the image

12.Muntz metal is used

a)      to make oil and hydraulic filling

b)      to make nut and bolts for used in salty atmosphere

c)      to make nut and bolts which are not affected by fresh water

d)     none

13. Most N-weldable material is

a)      2 S

b)      17 S

c)      52 S

d)     53 S

14. A punch made of tool steel is heat treated to

a)      heat to cherry red colour

b)      as in (a) and dipped in sand

c)      heat to dazzling white

d)     as in (b) and heat to purple colour

15. Binary no. 11.75 digital form is

a)      1011.11

b)      1101.11

c)      1011.10

d)     1111.01

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