67. Heat is transferred from an electric bulb by :
(^) Conduction (B} Convection
{C) Radiation (1)) All of the above
68. If steel is cooled in still air, the structure obtained is:
ل (B) Sorbite
(©) Troosite (M) Acicular
60. The modulus of rigidity is defined as the ratio ല്;
(ಹಿ) True stress to true strain
(B) Longitudinal stress to longitudinal strain
(0 Shear stress to shear strain
(D) Twisting moment to cross sectional....
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