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 The following type of nut is used with alien bolt Castle nut Any one of the above Hexagonal nut Slotted nut Castle nut Any one of the above Hexagonal nut Slotted nut ANSWER DOWNLOAD EXAMIANS APP
Machine Design The application of second type levers is found in Lever of a loaded safety valve Hand wheel of a punching press Handle of a hand pump A pair of tongs Lever of a loaded safety valve Hand wheel of a punching press Handle of a hand pump A pair of tongs ANSWER DOWNLOAD EXAMIANS APP
Machine Design Two shafts of the same length and material are joined in series. If the ratio of their diameters is 2, then the ratio of their angles of twist will be 8 2 16 4 8 2 16 4 ANSWER DOWNLOAD EXAMIANS APP
Machine Design The crest diameter of a screw thread is same as Core diameter Major diameter Minor diameter Pitch diameter Core diameter Major diameter Minor diameter Pitch diameter ANSWER DOWNLOAD EXAMIANS APP
Machine Design Tensile strength of a mild steel specimen can be roughly predicted from following hardness test Vickers Rockwell Brinell None of these Vickers Rockwell Brinell None of these ANSWER DOWNLOAD EXAMIANS APP
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