Machine Design The efficiency of a square threaded screw is maximum if the helix angle is equal to(Where φ = Angle of friction) 90° - φ 45° + φ/2 45° - φ/2 45° - φ 90° - φ 45° + φ/2 45° - φ/2 45° - φ ANSWER DOWNLOAD EXAMIANS APP
Machine Design Which of the following is a permanent fastening? Bolts Rivets Keys Cotters Bolts Rivets Keys Cotters ANSWER DOWNLOAD EXAMIANS APP
Machine Design The function of cutting oil when threading a pipe is to Help removes chips Provide cooling action Lubricate the dies All of these Help removes chips Provide cooling action Lubricate the dies All of these ANSWER DOWNLOAD EXAMIANS APP
Machine Design The rivet head used for boiler plate riveting is usually Counter sunk head Snap head Conical head Pan Head Counter sunk head Snap head Conical head Pan Head ANSWER DOWNLOAD EXAMIANS APP
Machine Design Cold working Alone has no influence on fatigue strength Decreases the fatigue strength Increases the fatigue strength Has no influence on fatigue strength Alone has no influence on fatigue strength Decreases the fatigue strength Increases the fatigue strength Has no influence on fatigue strength ANSWER DOWNLOAD EXAMIANS APP
Machine Design According to I.B.R., the factor of safety of riveted joint should not be less than 3 1 4 2 3 1 4 2 ANSWER DOWNLOAD EXAMIANS APP
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