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
Machine Design In a full journal bearing, the angle of contact of the bearing with the journal is 360° 270° 180° 120° 360° 270° 180° 120° ANSWER DOWNLOAD EXAMIANS APP
Machine Design The piston pin bearings in heavy duty diesel engines are Needle roller bearings Tapered roller bearings Cylindrical roller bearings Spherical roller bearings Needle roller bearings Tapered roller bearings Cylindrical roller bearings Spherical roller bearings ANSWER DOWNLOAD EXAMIANS APP
Machine Design A column is known as a long column if the slenderness ratio is 50 40 70 100 50 40 70 100 ANSWER DOWNLOAD EXAMIANS APP
Machine Design The expansion joint is mostly used for pipes which carry steam at __________ pressures. None of these High Low Medium None of these High Low Medium ANSWER DOWNLOAD EXAMIANS APP
Machine Design In the calculation of induced shear stress in helical springs, the Wahl's stress factor is used to take care of Combined effect of transverse shear stress and curvature of wire Combined effect of transverse shear stress and bending stress in the wire Combined effect of torsional shear stress and transverse shear stress in the wire Combined effect of bending stress and curvature of the wire Combined effect of transverse shear stress and curvature of wire Combined effect of transverse shear stress and bending stress in the wire Combined effect of torsional shear stress and transverse shear stress in the wire Combined effect of bending stress and curvature of the wire ANSWER DOWNLOAD EXAMIANS APP
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