Machine Design The efficiency of a square threaded screw is maximum if the helix angle is equal to(Where φ = Angle of friction) 45° - φ/2 90° - φ 45° + φ/2 45° - φ 45° - φ/2 90° - φ 45° + φ/2 45° - φ ANSWER DOWNLOAD EXAMIANS APP
Machine Design Lewis form factor for 14½° composite and full depth involute system is (where T = Number of teeth) 0.124 - (0.684/T) 0.175 - (0.841/T) 0.154 - (0.912/T) None of these 0.124 - (0.684/T) 0.175 - (0.841/T) 0.154 - (0.912/T) None of these ANSWER DOWNLOAD EXAMIANS APP
Machine Design Which process will increase the fatigue duration of parts? Shot-peening Finishing and polishing Electroplating De-carburisation Shot-peening Finishing and polishing Electroplating De-carburisation ANSWER DOWNLOAD EXAMIANS APP
Machine Design The building up of worn and undersized parts, subjected to repeated loads by electroplating is Cheapest method Extremely hazardous Best method Has no effect as regards fatigue strength Cheapest method Extremely hazardous Best method Has no effect as regards fatigue strength ANSWER DOWNLOAD EXAMIANS APP
Machine Design The notch angle of the Izod impact test specimen is 45° 20° 30° 10° 45° 20° 30° 10° 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 Miter gears Crown bevel gears Internal bevel gears Angular bevel gears Miter gears Crown bevel gears Internal bevel gears Angular bevel gears ANSWER DOWNLOAD EXAMIANS APP
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