Machine Design Plastic flow in ductile materials Increases the seriousness of static loading stress concentration Depends on other considerations Lessens the seriousness of static loading stress concentration Has no effect on it Increases the seriousness of static loading stress concentration Depends on other considerations Lessens the seriousness of static loading stress concentration Has no effect on it ANSWER DOWNLOAD EXAMIANS APP
Machine Design The railway carriage couplings have Acme threads Square threads Knuckle threads Buttress threads Acme threads Square threads Knuckle threads Buttress threads ANSWER DOWNLOAD EXAMIANS APP
Machine Design When the belt is transmitting maximum power, the belt speed should be(Where, m = mass of belt per meter (kg/m) and Pmax = maximum permissible tension in belt (N)) √(Pmax / 2m) √(3m /Pmax) √(Pmax / 3m) √(Pmax / m) √(Pmax / 2m) √(3m /Pmax) √(Pmax / 3m) √(Pmax / m) ANSWER DOWNLOAD EXAMIANS APP
Machine Design When the material of key and shaft is same, and the width of key is one-fourth of the diameter of shaft (d), then length of key will be 0.8 d 1.57 d 1.2 d 1.8 d 0.8 d 1.57 d 1.2 d 1.8 d 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) 1 Pc 2 Pc 3 Pc Pc/3 1 Pc 2 Pc 3 Pc Pc/3 ANSWER DOWNLOAD EXAMIANS APP
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 45° + φ/2 90° - φ 45° - φ/2 45° - φ 45° + φ/2 ANSWER DOWNLOAD EXAMIANS APP
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