Machine Design The ratio of belt tensions (p1/p2) considering centrifugal force in flat belt is given byWhere m = mass of belt per meter (kg/m)v = belt velocity (m/s)f = coefficient of frictiona = angle of wrap (radians) P1 / P2 = eᶠα P1 / P2 = e–ᶠα (P1 - mv²)/ (P2 - mv²) = eᶠα (P1 - mv²)/ (P2 - mv²) = e–ᶠα P1 / P2 = eᶠα P1 / P2 = e–ᶠα (P1 - mv²)/ (P2 - mv²) = eᶠα (P1 - mv²)/ (P2 - mv²) = e–ᶠα ANSWER DOWNLOAD EXAMIANS APP
Machine Design When two springs are in series (having stiffness K), the equivalent stiffness will be 2K K K/2 K/4 2K K K/2 K/4 ANSWER DOWNLOAD EXAMIANS APP
Machine Design When bevel gears having equal teeth and equal pitch angles connect two shafts whose axes intersect at right angle, then they are known as Internal bevel gears Miter gears Angular bevel gears Crown bevel gears Internal bevel gears Miter gears Angular bevel gears Crown bevel gears ANSWER DOWNLOAD EXAMIANS APP
Machine Design When the material of key and shaft is same, and the width of key is one-fourth of the diameter of shaft (d), then length of key will be 1.57 d 1.2 d 1.8 d 0.8 d 1.57 d 1.2 d 1.8 d 0.8 d ANSWER DOWNLOAD EXAMIANS APP
Machine Design Form coefficient of spring is Concerned with strength of wire of spring Ratio of coil diameter to wire diameter Load required to produce unit deflection Its capability of storing energy Concerned with strength of wire of spring Ratio of coil diameter to wire diameter Load required to produce unit deflection Its capability of storing energy ANSWER DOWNLOAD EXAMIANS APP
Machine Design The maximum stress due to stress concentration in a bar having circular transverse hole, as compared to its static stress without hole will be Same in both cases 3 times more 2 times more 4 times more Same in both cases 3 times more 2 times more 4 times more ANSWER DOWNLOAD EXAMIANS APP
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