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Questions on Hardenability and Thermodynamic Relations.

Lohit Kumar Yadav
IRSME. Graduated in Mechanical engineering. Secured AIR 1 in ESE 2017. Believes in Quality Education for all.

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Unacademy user
  1. Solution and Analysis of One Mark Questions (In English) GATEa By: Lohit Kumar Yadav GRADUATE APTITUDE TEST IN ENGINEERING Afternoon Session


  2. About me: Secured AIR 1 in ESE 2017 Appeared for ISRO, BARC, BEL, BPCL, IOCL Interviews 2 years professional experience AFSB Mysore, 2014 Educator on Unacademy since December, 2017 Hobbies: Reading Fictional Novels, Cooking, Playing Piano


  3. Hardenability of steel is a measure of the depth to which required hardening is obtained when it is austenitized and then quenched. the ability to harden when it is cold worked the ability to retain its hardness when it is heated to elevated temperatures the maximum hardness that can be obtained when it is austenitized and then quenched (a) (b) (c) (d)


  4. Hardenability: is the ability for a material to harden; it refers not to the highest value of hardness that can be obtained but to the capacity to harden Hardness: is the resistance of a material to plastic deformation


  5. For a simple compressible system, v, s, p and T are specific volume, specific entropy, pressure and temperature, respectively. As per Maxwell's relations, is equal to Os Os OT aT OT (C)a


  6. -s



  7. 5 !


  8. ! 0


  9. ! v