Machine Design At low temperatures (say 75°C) the notched bar impact value of steel Decreases markedly Depends on heat treatment carried out Remain same Increases markedly Decreases markedly Depends on heat treatment carried out Remain same Increases markedly ANSWER DOWNLOAD EXAMIANS APP
Machine Design When the belt is transmitting maximum power, the belt speed should be(Where, m = mass of belt per meter (kg/m) and Pmax = maximum permissible tension in belt (N)) √(3m /Pmax) √(Pmax / 2m) √(Pmax / m) √(Pmax / 3m) √(3m /Pmax) √(Pmax / 2m) √(Pmax / m) √(Pmax / 3m) ANSWER DOWNLOAD EXAMIANS APP
Machine Design A shaft is subjected to a maximum bending stress of 80 N/mm² and maximum shearing stress equal to 30 N/mm² at a particular section. If the yield point in tension of the material is 280 N/mm² and the maximum shear stress theory of failure is used, then the factor of safety obtained will be 3 2.8 2.5 3.5 3 2.8 2.5 3.5 ANSWER DOWNLOAD EXAMIANS APP
Machine Design A spring is used to Store energy Measure forces Apply forces All of these Store energy Measure forces Apply forces All of these ANSWER DOWNLOAD EXAMIANS APP
Machine Design A thin spherical shell of internal diameter d is subjected to an internal pressure p. If σt is the tensile stress for the shell material, then thickness of shell is equal to pd/2σt pd/3σt pd/σt pd/4σt pd/2σt pd/3σt pd/σt pd/4σt ANSWER DOWNLOAD EXAMIANS APP
Machine Design An alien bolt is Self locking bolt Used in high speed components Same as stud Provided with hexagonal depression in head Self locking bolt Used in high speed components Same as stud Provided with hexagonal depression in head ANSWER DOWNLOAD EXAMIANS APP
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