Machine Design The usual proportion for the width of key is (where d = Diameter of shaft or diameter of hole in the hub) d/8 d/2 d/4 d/6 d/8 d/2 d/4 d/6 ANSWER DOWNLOAD EXAMIANS APP
Machine Design Which of the following screw thread is used for power transmission in one direction only? Multiple threads Buttress threads Square threads Acme threads Multiple threads Buttress threads Square threads Acme threads ANSWER DOWNLOAD EXAMIANS APP
Machine Design Which of the following statement is correct regarding power screws? The efficiency of Acme (trapezoidal) thread is less than that of a square thread 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 a self locking screw can not be more than 50% The efficiency of Acme (trapezoidal) thread is less than that of a square thread 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 a self locking screw can not be more than 50% ANSWER DOWNLOAD EXAMIANS APP
Machine Design The included angle for the British standard whitworth thread is 47.5° 60° 29° 55° 47.5° 60° 29° 55° ANSWER DOWNLOAD EXAMIANS APP
Machine Design If T₁ and T₂ are the tensions on the tight and slack sides of the belt respectively, and Tc is the centrifugal tension, then initial tension in the belt is equal to T₁ + T₂ + Tc T₁ - T₂ + Tc (T₁ + T₂ + Tc)/2 (T₁ - T₂ + Tc)/2 T₁ + T₂ + Tc T₁ - T₂ + Tc (T₁ + T₂ + Tc)/2 (T₁ - T₂ + Tc)/2 ANSWER DOWNLOAD EXAMIANS APP
Machine Design The centrifugal tension in belts Increase the wrap angle Increases the power transmitted Increases the belt tension without increasing power transmission Decreases the power transmitted Increase the wrap angle Increases the power transmitted Increases the belt tension without increasing power transmission Decreases the power transmitted ANSWER DOWNLOAD EXAMIANS APP
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