Machine Design A screw will be self locking, if Friction angle is more than helix angle Efficiency of screw is 100% Friction angle is equal to helix angle Friction angle is less than helix angle Friction angle is more than helix angle Efficiency of screw is 100% Friction angle is equal to helix angle Friction angle is less than helix angle ANSWER DOWNLOAD EXAMIANS APP
Machine Design The bending moment ‘M’ and a torque ‘T’ is applied on a solid circular shaft. If the maximum bending stress equals to maximum shear stress developed, then ‘M’ is equal to T/2 2 T 1 T 4 T T/2 2 T 1 T 4 T ANSWER DOWNLOAD EXAMIANS APP
Machine Design In a flange coupling, the flanges are coupled together by means of Studs None of these Bolts and nuts Headless taper bolts Studs None of these Bolts and nuts Headless taper bolts ANSWER DOWNLOAD EXAMIANS APP
Machine Design Form coefficient of spring is Concerned with strength of wire of spring Load required to produce unit deflection Its capability of storing energy Ratio of coil diameter to wire diameter Concerned with strength of wire of spring Load required to produce unit deflection Its capability of storing energy Ratio of coil diameter to wire diameter ANSWER DOWNLOAD EXAMIANS APP
Machine Design The rolling contact bearings as compared to sliding contact bearings have Low starting and low running friction except at very high speeds All of these Accuracy of shaft alignment Small overall dimensions Low starting and low running friction except at very high speeds All of these Accuracy of shaft alignment Small overall dimensions ANSWER DOWNLOAD EXAMIANS APP
Machine Design When an open coiled helical compression spring is subjected to an axial compressive load, the maximum shear stress induced in the wire is (where D = Mean diameter of the spring coil, d = Diameter of the spring wire, K = Wahl's stress factor, and W = Axial compressive load on the spring) (WD/ πd3) × K (8WD/ πd3) × K (2WD/ πd3) × K (4WD/ πd3) × K (WD/ πd3) × K (8WD/ πd3) × K (2WD/ πd3) × K (4WD/ πd3) × K ANSWER DOWNLOAD EXAMIANS APP
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