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 45° - φ/2 90° - φ 45° + φ/2 45° - φ 45° - φ/2 90° - φ 45° + φ/2 ANSWER DOWNLOAD EXAMIANS APP
Machine Design The condition for maximum power transmission is that the maximum tension in the flat belt should be equal to(Where, Pc = tension in belt due to centrifugal force) 2 Pc 1 Pc 3 Pc Pc/3 2 Pc 1 Pc 3 Pc Pc/3 ANSWER DOWNLOAD EXAMIANS APP
Machine Design The elasticity is the property of a material which enables it to Draw into wires by the application of a tensile force Regains its original shape after deformation when the external forces are removed Resists fracture due to high impact loads Retain deformation produced under load permanently Draw into wires by the application of a tensile force Regains its original shape after deformation when the external forces are removed Resists fracture due to high impact loads Retain deformation produced under load permanently ANSWER DOWNLOAD EXAMIANS APP
Machine Design When the belt speed increases Power transmitted remains the same Power transmitted increases Power transmitted decreases Power transmitted increases to a maximum value and then decreases Power transmitted remains the same Power transmitted increases Power transmitted decreases Power transmitted increases to a maximum value and then decreases ANSWER DOWNLOAD EXAMIANS APP
Machine Design Eye bolts are used for Absorbing shock and vibrations Lifting and transportation of machines and cubicles Foundation purposes Transmission of power Absorbing shock and vibrations Lifting and transportation of machines and cubicles Foundation purposes Transmission of power 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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