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% 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% Both (A) and (B) If the friction angle is less than the helix angle of the screw, then the efficiency will be more than 50% 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% Both (A) and (B) ANSWER DOWNLOAD EXAMIANS APP
Machine Design A flange coupling is used to connect two shafts Which are not in exact alignment Whose axes intersect at a small angle Which are perfectly aligned Have lateral misalignment Which are not in exact alignment Whose axes intersect at a small angle Which are perfectly aligned Have lateral misalignment ANSWER DOWNLOAD EXAMIANS APP
Machine Design Two shafts will have equal strength, if Material of both the shafts is same Twisting moment of both the shafts is same Angle of twist of both the shafts is same Diameter of both the shafts is same Material of both the shafts is same Twisting moment of both the shafts is same Angle of twist of both the shafts is same Diameter of both the shafts is same ANSWER DOWNLOAD EXAMIANS APP
Machine Design The stress in the threaded part of the bolt will be __________ as compared to the shank. None of these Lower Higher Same None of these Lower Higher Same ANSWER DOWNLOAD EXAMIANS APP
Machine Design The velocity factor for ordinary cut gears operating at velocities up to 12.5 m/s is equal to 3/(3 + v) 6/(6 + v) 0.75/(0.75 + √v) 4.5/(4.5 + v) 3/(3 + v) 6/(6 + v) 0.75/(0.75 + √v) 4.5/(4.5 + v) ANSWER DOWNLOAD EXAMIANS APP
Machine Design The longitudinal stress is __________ of the circumferential stress. One-half Three-fourth Two-third Double One-half Three-fourth Two-third Double ANSWER DOWNLOAD EXAMIANS APP
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