Machine Design When a hole of diameter ‘d’ is punched in a metal of thickness 't', then the force required to punch a hole is equal to (where τu = Ultimate shear strength of the material of the plate) π/4 × d² × tτu π/4 × d².τu t.τu πd.t.τu π/4 × d² × tτu π/4 × d².τu t.τu πd.t.τu ANSWER DOWNLOAD EXAMIANS APP
Machine Design When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at the Shank Middle Thread Head Shank Middle Thread Head ANSWER DOWNLOAD EXAMIANS APP
Machine Design In worm, gears, pitch lead angle is The angle between the tangent to the pitch helix and an element of the cylinder None of these Half the angle between two inclined faces in axial plane The angle between the tangent to the pitch helix and the plane of rotation The angle between the tangent to the pitch helix and an element of the cylinder None of these Half the angle between two inclined faces in axial plane The angle between the tangent to the pitch helix and the plane of rotation ANSWER DOWNLOAD EXAMIANS APP
Machine Design Fabric belts are used in industrial applications because They are cheap None of these They are unaffected by moisture and humidity They can work at high temperature They are cheap None of these They are unaffected by moisture and humidity They can work at high temperature ANSWER DOWNLOAD EXAMIANS APP
Machine Design The shock resistance of steel is increased by adding Cobalt and molybdenum Chromium Nickel and chromium Nickel Cobalt and molybdenum Chromium Nickel and chromium Nickel ANSWER DOWNLOAD EXAMIANS APP
Machine Design Which of the following statement is correct regarding power screws? 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% The efficiency of Acme (trapezoidal) thread is less than that of a square thread ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS