Theory of Machine Which of the following statements regarding laws governing the friction between dry surfaces are correct? All of these The friction force is directly proportional to the normal force. The friction force is dependent on the materials of the contact surfaces. The friction force is independent of me area of contact. All of these The friction force is directly proportional to the normal force. The friction force is dependent on the materials of the contact surfaces. The friction force is independent of me area of contact. ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The radius of a friction circle for a shaft rotating inside a bearing is (where r = Radius of shaft, and tan φ = Coefficient of friction between the shaft and bearing) r cosφ (r/2) cosφ r sinφ r tanφ r cosφ (r/2) cosφ r sinφ r tanφ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The absolute acceleration of any point ‘P’ in a link about center of rotation ‘O’ is At 45° to PO None of the listed here Along PO Perpendicular to PO At 45° to PO None of the listed here Along PO Perpendicular to PO ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The size of cam depends upon Prime circle Pitch circle Base circle Pitch curve Prime circle Pitch circle Base circle Pitch curve ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a four bar chain or quadric cycle chain Two are turning pairs and two are sliding pairs Each of the four pairs is a turning pair Three are turning pairs and one is a sliding pair One is a turning pair and three are sliding pairs Two are turning pairs and two are sliding pairs Each of the four pairs is a turning pair Three are turning pairs and one is a sliding pair One is a turning pair and three are sliding pairs ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Whitworth quick return mechanism is obtained by inversion of Five link mechanism Slider crank mechanism Roller cam mechanism Kinematic chain Five link mechanism Slider crank mechanism Roller cam mechanism Kinematic chain ANSWER DOWNLOAD EXAMIANS APP
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