Machine Design The distribution of the forces along the length of key fitted in a shaft Varies exponentially, being more near the torque-input end Is uniform throughout Varies exponentially, being less near the torque-input end Varies linearly Varies exponentially, being more near the torque-input end Is uniform throughout Varies exponentially, being less near the torque-input end Varies linearly ANSWER DOWNLOAD EXAMIANS APP
Machine Design The stiffness of a closely coiled helical spring subjected to an axial load W is equal to (where G = Modulus of rigidity, and n = Number of active coils) Gd⁴/ 8D3n Gd3/ 8D3n Gd⁴/ 4D3n Gd⁴/ 8D²n Gd⁴/ 8D3n Gd3/ 8D3n Gd⁴/ 4D3n Gd⁴/ 8D²n ANSWER DOWNLOAD EXAMIANS APP
Machine Design The shear stress at a point in a shaft subjected to a torque is Directly proportional to the polar moment of inertia and to the distance of the point from the axis Inversely proportional to the applied torque and the polar moment of inertia Directly proportional to the applied torque and inversely proportional to the polar moment of inertia Directly proportional to the applied torque and the polar moment of inertia Directly proportional to the polar moment of inertia and to the distance of the point from the axis Inversely proportional to the applied torque and the polar moment of inertia Directly proportional to the applied torque and inversely proportional to the polar moment of inertia Directly proportional to the applied torque and the polar moment of inertia ANSWER DOWNLOAD EXAMIANS APP
Machine Design Which of the following statement is correct regarding power screws? The efficiency of a self locking screw can not be more than 50% The efficiency of Acme (trapezoidal) thread is less than that of a square thread If the friction angle is less than the helix angle of the screw, then the efficiency will be more than 50% Both (A) and (B) The efficiency of a self locking screw can not be more than 50% The efficiency of Acme (trapezoidal) thread is less than that of a square thread If the friction angle is less than the helix angle of the screw, then the efficiency will be more than 50% Both (A) and (B) 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 - mv²)/ (P2 - mv²) = eᶠα P1 / P2 = eᶠα (P1 - mv²)/ (P2 - mv²) = e–ᶠα P1 / P2 = e–ᶠα (P1 - mv²)/ (P2 - mv²) = eᶠα P1 / P2 = eᶠα (P1 - mv²)/ (P2 - mv²) = e–ᶠα ANSWER DOWNLOAD EXAMIANS APP
Machine Design For maximum power, the velocity of the belt will be None of these √(T/3m) √(T/2m) √(T/m) None of these √(T/3m) √(T/2m) √(T/m) ANSWER DOWNLOAD EXAMIANS APP
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