Theory of Machine A friction circle is a circle drawn when a journal rotates in a bearing. Its radius depends upon the coefficient of friction and the Angular velocity of journal Clearance between journal and bearing Magnitude of the forces on journal Radius of journal Angular velocity of journal Clearance between journal and bearing Magnitude of the forces on journal Radius of journal ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The tractive force is maximum or minimum when the angle of inclination of crank with the line of stroke (θ) is equal to 90° and 180° 270° and 360° 135° and 315° 0° and 90° 90° and 180° 270° and 360° 135° and 315° 0° and 90° ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The Ackermann steering mechanism is preferred to the Davis type in automobiles because The former is mathematically accurate The former is most economical The former is having turning pair The former is most rigid The former is mathematically accurate The former is most economical The former is having turning pair The former is most rigid ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A simple spring-mass vibrating system has a natural frequency of fn. If the spring stiffness is halved and the mass is doubled, then the natural frequency will become 4 fn 8 fn 2 fn fn/2 4 fn 8 fn 2 fn fn/2 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The critical speed of a shaft with a disc supported in between is equal to the natural frequency of the system in All of these Transverse vibrations Torsional vibrations Longitudinal vibrations All of these Transverse vibrations Torsional vibrations Longitudinal vibrations ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A mass of 1 kg is attached to the end of a spring with a stiffness of 0.7 N/mm. The critical damping coefficient of this system is 18.52 N-s/m 52.92 N-s/m 1.4 N-s/m 529.2 N-s/m 18.52 N-s/m 52.92 N-s/m 1.4 N-s/m 529.2 N-s/m ANSWER DOWNLOAD EXAMIANS APP
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