Machine Design Two closely coiled helical springs with stiffness k₁ and k₂ respectively are connected in series. The stiffness of an equivalent spring is given by (k₁ - k₂)/ (k₁ + k₂) (k₁ - k₂)/ (k₁ k₂) (k₁ + k₂)/ (k₁ k₂) (k₁ k₂)/ (k₁ + k₂) (k₁ - k₂)/ (k₁ + k₂) (k₁ - k₂)/ (k₁ k₂) (k₁ + k₂)/ (k₁ k₂) (k₁ k₂)/ (k₁ + k₂) ANSWER DOWNLOAD EXAMIANS APP
Machine Design The expression 0.175 - 0.841/T is the Lewis form factor for None of these 20° full depth involute system 20° stub system 14½° composite and full depth involute system None of these 20° full depth involute system 20° stub system 14½° composite and full depth involute system ANSWER DOWNLOAD EXAMIANS APP
Machine Design Tearing resistance required to tear off the plate per pitch length is (where p = Pitch of rivets, d = Dia. of rivet hole, and σt = Permissible tensile stress for plate material) p.t.σt p.d.σt (p - d) t.σt p.t.σt p.d.σt (p - d) t.σt ANSWER DOWNLOAD EXAMIANS APP
Machine Design The helix angle for single helical gears ranges from 15° to 20° 10° to 15° 35° to 50° 20° to 35° 15° to 20° 10° to 15° 35° to 50° 20° to 35° ANSWER DOWNLOAD EXAMIANS APP
Machine Design A spring of stiffness 1000 N/m is stretched initially by 100 mm from the undeformed position. The work required to stretch it by another 100 mm is 7 N-m 10 N-m 5 N-m 15 N-m 7 N-m 10 N-m 5 N-m 15 N-m ANSWER DOWNLOAD EXAMIANS APP
Machine Design In order to avoid tearing of the plate at an edge, the distance from the centre line of the rivet hole to the nearest edge of the plate should be equal to (where d = Diameter of rivet hole) 1.5 d 1 d 2.5 d 2 d 1.5 d 1 d 2.5 d 2 d ANSWER DOWNLOAD EXAMIANS APP
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