23) The stress developed in a thin spherical shell (thickness t and diameter D) subjected to an internal pressure P is:

(PD/4t)

(PD/2t)

(PD/t)

(PD/8t)

Answer is:

(PD/4t)

ISRO Technician-B Fitter Question Paper - 2016 (Set - 3) with Answer Key

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24) Endurance limit depends on 1. Material 2. Size 3. Surface finish 4. Type of loading

1, 2, 3, 4

1, 3, 4

1 and 4 only

1, 2, 3

Answer is:

1, 2, 3, 4

25) Shot peening increases the fatigue life of springs because it results in

Alteration of stiffness of spring

Residual compression at surface

Changes in surface composition

Abration in surface leads to smooth surface.

Answer is:

Residual compression at surface

26) Which of the following is applied to brittle materials

maximum principal stress theory

maximum principal strain theory

maximum strain energy theory

maximum shear stress theory

Answer is:

maximum principal stress theory

27) Which of the following constituents of steel is softest

Ferrite

Ledeburite

Pearlite

Austenite

Answer is:

Ferrite

ISRO Technician-B Fitter Question Paper - 2016 (Set - 3) with Answer Key

For more MCQ's Click Here

23) The stress developed in a thin spherical shell (thickness t and diameter D) subjected to an internal pressure P is:

(PD/4t)

ISRO Technician-B Fitter Question Paper - 2016 (Set - 3) with Answer Key

Related ISRO Technician-B Fitter Question Paper - 2016 (Set - 3) with Answer Key

24) Endurance limit depends on 1. Material 2. Size 3. Surface finish 4. Type of loading

1, 2, 3, 4

25) Shot peening increases the fatigue life of springs because it results in

Residual compression at surface

26) Which of the following is applied to brittle materials

maximum principal stress theory

27) Which of the following constituents of steel is softest

Ferrite

ISRO Technician-B Fitter Question Paper - 2016 (Set - 3) with Answer Key