Machine Design The power transmitted by the belt drive can be increased by All of these Increasing the initial tension in the belt Dressing the belt to increase the coefficient of friction Increasing wrap angle by using idler pulley All of these Increasing the initial tension in the belt Dressing the belt to increase the coefficient of friction Increasing wrap angle by using idler pulley ANSWER DOWNLOAD EXAMIANS APP
Machine Design Which of the following statement is correct regarding power screws? The efficiency of a self locking screw can not be more than 50% The efficiency of Acme (trapezoidal) thread is less than that of a square thread If the friction angle is less than the helix angle of the screw, then the efficiency will be more than 50% Both (A) and (B) The efficiency of a self locking screw can not be more than 50% The efficiency of Acme (trapezoidal) thread is less than that of a square thread If the friction angle is less than the helix angle of the screw, then the efficiency will be more than 50% Both (A) and (B) ANSWER DOWNLOAD EXAMIANS APP
Machine Design In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set in order to Ensure proper alignment Reduce vibration Ensure uniform loading Reduce slip Ensure proper alignment Reduce vibration Ensure uniform loading Reduce slip ANSWER DOWNLOAD EXAMIANS APP
Machine Design In the levers of first type, the mechanical advantage is ________ one. More than None of these Less than Equal to More than None of these Less than Equal to 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) Pc/3 1 Pc 3 Pc 2 Pc Pc/3 1 Pc 3 Pc 2 Pc ANSWER DOWNLOAD EXAMIANS APP
Machine Design For tight leakage joints, following type of thread is best suited Buttress Square NPT (national pipe threads). Metric Buttress Square NPT (national pipe threads). Metric ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS