Multiple Choice Questions (MCQ) on Testing of materials

Multiple Choice Questions (MCQ) on Testing of materials

 

Tensile test can be performed on

  1. Impact testing machine
  2. Universal testing machine
  3. Rockwell tester
  4. Brinell tester

(Ans:b)

 

Which machine records the change in length of specimen?

  1. Impact testing machine
  2. Universal testing machine
  3. Rockwell tester
  4. Brinell tester

(Ans:b)

 

The ability of the material to resist stress without failure is called

  1. Strength
  2. Hardness
  3. stiffness
  4. toughness

(Ans:a)

 

In universal testing machine, for a circular section specimen, the gauge length is taken to be

  1. 3.65 (A)^1/2
  2. 4.65 (A)^1/2
  3. 5.65 (A)^1/2
  4. 6.65 (A)^1/2

Where A=Area of cross section of the test specimen

(Ans:c)

 

In universal testing machine, the tensile specimen of mild steel fails in shear and the shear stress is maximum at __ degrees planes with respect to the direction of load.

  1. 30
  2. 45
  3. 60
  4. 75

(Ans:b)

 

The shape of specimen used in compression test is

  1. Cube
  2. Cylinder
  3. Cuboid
  4. Prism

Which of the above is true?

  1. Only i
  2. i & ii
  3. i, ii & iii
  4. All of the above

(Ans:b)

 

During compression test of cast iron, the failure occurs i.e. the crack appears along the

  1. Diagonal
  2. Surface parallel to load applied
  3. Surface perpendicular to load applied
  4. Any of the above

(Ans:a)

 

The property of a material that resists penetration or indentation by means of abrasion or scratching is known as

  1. Strength
  2. Hardness
  3. Toughness
  4. Brittleness

(Ans:b)

 

During hardness test the indenter is usually a

  1. Ball
  2. Pyramid
  3. Cone
  4. All of the above

(Ans:d)

 

The indenter used in Brinell hardness test is a

  1. Ball
  2. Cone
  3. Cylinder
  4. Pyramid

(Ans:b)

 

For hardness test of copper in Brinell hardness tester, the diameter of ball is

  1. 1 mm
  2. 3 mm
  3. 5 mm
  4. 7 mm

(Ans:c)

 

In C-scale of Rockwell hardness testing, the shape of indenter used is

  1. Diamond cone
  2. Steel ball
  3. Steel prism
  4. Any of the above

(Ans:a)

 

The load applied in C-scale of Rockwell hardness test is

  1. 60 kgf
  2. 100 kgf
  3. 120 kgf
  4. 150 kgf

(Ans:d)

 

Pyramid type diamond indenter is used in

  1. Brinell hardness testing
  2. Rockwell hardness testing
  3. Vickers hardness testing
  4. All of the above

(Ans:c)

 

The impact test is done to test _____ of a material

  1. Strength
  2. Ductility
  3. Toughness
  4. Hardness

(Ans:c)

 

In Izod test, the specimen is kept as

  1. Simply supported beam
  2. Cantilever beam
  3. Overhanging beam
  4. Fixed ended beam

(Ans:b)

 

In Charpy impact test, the specimen is kept as

  1. Simply supported beam
  2. Cantilever beam
  3. Overhanging beam
  4. Fixed ended beam

(Ans:a)

 

In charpy test specimen, the angle of v-notch section is

  1. 30 degrees
  2. 45 degrees
  3. 60 degrees
  4. 90 degrees

(Ans:b)