Machine Design Euler’s formula for a mild steel column is not valid if the slenderness ratio is 100 120 60 90 100 120 60 90 ANSWER DOWNLOAD EXAMIANS APP
Machine Design When a bolt and nut is made of mild steel, then the effective height of nut is made equal to (where d = Nominal diameter of bolt) 0.75 d d 0.5 d 1.25 d 0.75 d d 0.5 d 1.25 d ANSWER DOWNLOAD EXAMIANS APP
Machine Design According to I.B.R., the efficiency of a triple riveted butt joint with double straps of unequal width (5 rivets per pitch length) should be 63 to 70% 80 to 90% 70 to 83% 45 to 60% 63 to 70% 80 to 90% 70 to 83% 45 to 60% ANSWER DOWNLOAD EXAMIANS APP
Machine Design A universal coupling is used to connect two shafts Which are perfectly aligned Whose axes intersect at a small angle Which are not in exact alignment Have lateral misalignment Which are perfectly aligned Whose axes intersect at a small angle Which are not in exact alignment Have lateral misalignment ANSWER DOWNLOAD EXAMIANS APP
Machine Design Gear box is used To obtain variable speeds For speed reduction To produce torque To increase efficiency of system To obtain variable speeds For speed reduction To produce torque To increase efficiency of system ANSWER DOWNLOAD EXAMIANS APP
Machine Design The ratio of belt tensions (p1/p2) considering centrifugal force in flat belt is given by Where m = mass of belt per meter (kg/m) v = belt velocity (m/s) f = coefficient of friction a = angle of wrap (radians) P1 / P2 = e–ᶠα P1 / P2 = eᶠα (P1 - mv²)/ (P2 - mv²) = e–ᶠα (P1 - mv²)/ (P2 - mv²) = eᶠα P1 / P2 = e–ᶠα P1 / P2 = eᶠα (P1 - mv²)/ (P2 - mv²) = e–ᶠα (P1 - mv²)/ (P2 - mv²) = eᶠα ANSWER DOWNLOAD EXAMIANS APP
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