Machine Design A screw will be self locking, if Friction angle is less than helix angle Friction angle is more than helix angle Efficiency of screw is 100% Friction angle is equal to helix angle Friction angle is less than helix angle Friction angle is more than helix angle Efficiency of screw is 100% Friction angle is equal to helix angle ANSWER DOWNLOAD EXAMIANS APP
Machine Design A compound cylinder with inner radius 50 mm and outer radius 70 mm is made by shrinking one cylinder on to the other cylinder, the junction radius is 60 mm and the junction pressure is 1.1 N/mm². The maximum hoop stress developed in the inner cylinder is 3.6 N/mm² compression 3.6 N/mm² tension 7.2 N/mm² tension 7.2 N/mm² compression 3.6 N/mm² compression 3.6 N/mm² tension 7.2 N/mm² tension 7.2 N/mm² compression ANSWER DOWNLOAD EXAMIANS APP
Machine Design If d is the normal diameter of a bolt in mm, then the initial tension in kg in a bolt used for making a fluid tight joint as for steam engine cover joint is calculated by the relation 168 d 124 d 151 d 138 d 168 d 124 d 151 d 138 d ANSWER DOWNLOAD EXAMIANS APP
Machine Design For low and moderate speed engines, the cam follower should move with Uniform velocity Cycloidal motion Simple harmonic motion Uniform acceleration and retardation Uniform velocity Cycloidal motion Simple harmonic motion Uniform acceleration and retardation ANSWER DOWNLOAD EXAMIANS APP
Machine Design When compared to the rod of the same diameter and material, a wire rope Provides much greater time for remedial action before failure Has a much smaller load carrying capacity Does not provide much warning before failure Is less flexible Provides much greater time for remedial action before failure Has a much smaller load carrying capacity Does not provide much warning before failure Is less flexible ANSWER DOWNLOAD EXAMIANS APP
Machine Design For hardening alloy steels and high speed steels, they are heated to 1300 to 1500°C 1100 to 1300°C 500 to 600°C 700 to 900°C 1300 to 1500°C 1100 to 1300°C 500 to 600°C 700 to 900°C ANSWER DOWNLOAD EXAMIANS APP
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