Machine Design If P1 and P2 are the tight and slack side tensions in the belt, then the initial tension Pi (neglecting centrifugal tension) will be equal to (Where, Pc is centrifugal tension) ⅟₂ × (P1 + P2) P1 + P2 P1 - P2 [⅟₂ × (P1 + P2)] + Pc ⅟₂ × (P1 + P2) P1 + P2 P1 - P2 [⅟₂ × (P1 + P2)] + Pc ANSWER DOWNLOAD EXAMIANS APP
Machine Design When screw threads are to be used in a situation where power is being transmitted in one direction only, then the screw threads suitable for this will be Buttress threads Acme threads Knuckle threads Square threads Buttress threads Acme threads Knuckle threads Square threads ANSWER DOWNLOAD EXAMIANS APP
Machine Design The connecting rod bolts are tightened up with initial tension greater than the external load so that Bolts are weakest elements Joint may not open up The resultant load on the bolt would not be affected by the external cyclic load Bolts will not loosen during service Bolts are weakest elements Joint may not open up The resultant load on the bolt would not be affected by the external cyclic load Bolts will not loosen during service ANSWER DOWNLOAD EXAMIANS APP
Machine Design In case of pressure vessels having open ends, the fluid pressure induces Shear stress None of these Circumferential stress Longitudinal stress Shear stress None of these Circumferential stress Longitudinal stress ANSWER DOWNLOAD EXAMIANS APP
Machine Design According to I.B.R., shearing resistance required to shear off the rivet per pitch length (in double shear) is (where n = Number of rivets per pitch length) 2 × (π/4) d² × τ × n 3 × (π/4) d² × τ × n 1.875 × (π/4) d² × τ × n (π/4) d² × τ × n 2 × (π/4) d² × τ × n 3 × (π/4) d² × τ × n 1.875 × (π/4) d² × τ × n (π/4) d² × τ × n ANSWER DOWNLOAD EXAMIANS APP
Machine Design The velocity factor for precision metallic gears cut with high accuracy and operating at velocities up to 20 m/s is equal to 3/ (3 + v) 0.75/ (0.75 + √v) 4.5/ (4.5 + v) 6/ (6 + v) 3/ (3 + v) 0.75/ (0.75 + √v) 4.5/ (4.5 + v) 6/ (6 + v) ANSWER DOWNLOAD EXAMIANS APP
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