Machine Design Which of the following statement is correct regarding power screws? 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 Acme (trapezoidal) thread is less than that of a square thread The efficiency of a self locking screw can not be more than 50% 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 Acme (trapezoidal) thread is less than that of a square thread The efficiency of a self locking screw can not be more than 50% ANSWER DOWNLOAD EXAMIANS APP
Machine Design Resilience of a material is important, when it is subjected to Shock loading Thermal stresses Combined loading Fatigue Shock loading Thermal stresses Combined loading Fatigue ANSWER DOWNLOAD EXAMIANS APP
Machine Design In second type of levers, Fulcrum is in between the load and effort None of these Load is in between the fulcrum and effort Effort is in between the fulcrum and load Fulcrum is in between the load and effort None of these Load is in between the fulcrum and effort Effort is in between the fulcrum and load ANSWER DOWNLOAD EXAMIANS APP
Machine Design The application of third type levers is found in Handle of a hand pump Hand wheel of a punching press A pair of tongs Lever of a loaded safety valve Handle of a hand pump Hand wheel of a punching press A pair of tongs Lever of a loaded safety valve ANSWER DOWNLOAD EXAMIANS APP
Machine Design The included angle for the British Association thread is 60° 47.3° 29° 55° 60° 47.3° 29° 55° ANSWER DOWNLOAD EXAMIANS APP
Machine Design A long helical spring having a spring stiffness of 12 kN/m and number of turns 20, breaks into two parts with number of turns 10 each in both the parts. If the two parts are connected in series, then the softness of the resultant spring will be 12 kN/m 24 kN/m 6 kN/m 30 kN/m 12 kN/m 24 kN/m 6 kN/m 30 kN/m ANSWER DOWNLOAD EXAMIANS APP
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