Apart from alloying, name a material that is used instead of ferritic steels to increase the ultimate strength of unalloyed steels.

• A. Chromium
• B. Molybdenum
• C. " Austenitic steelb) None of the mentionedView AnswerAnswer: cExplanation: The use of Austenitic steels increases the ultimate strength of unalloyed steels at high temperatures. The temperature limits are in the range 538-565 degree Centigrade.9. Which of these cases will have a higher cycle efficiency?a) Condenser Pressure= 25 mm of Hg; C
• D. Condenser Pressure= 100 mm of Hg; Cooling Water Temperature= 45 degree Centigrade