Theory of Machine Which of the following statements regarding laws governing the friction between dry surfaces are correct? The friction force is dependent on the materials of the contact surfaces. The friction force is directly proportional to the normal force. The friction force is independent of me area of contact. All of these The friction force is dependent on the materials of the contact surfaces. The friction force is directly proportional to the normal force. The friction force is independent of me area of contact. All of these ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Frequency of vibrations is usually expressed in None of these Number of cycles per second Number of cycles per hour Number of cycles per minute None of these Number of cycles per second Number of cycles per hour Number of cycles per minute ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The minimum length of the coupler will be 95 mm Slightly less than 45 mm Slightly more than 45 mm 45 mm 95 mm Slightly less than 45 mm Slightly more than 45 mm 45 mm ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The absolute acceleration of any point ‘P’ in a link about center of rotation ‘O’ is Perpendicular to PO None of the listed here Along PO At 45° to PO Perpendicular to PO None of the listed here Along PO At 45° to PO ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The velocity of the rubbing surface __________ with the distance from the axis of the bearing. Decreases Increases None of these Remain same Decreases Increases None of these Remain same ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The retardation of a flat faced follower when it has contact at the apex of the nose of a circular arc cam, is given by (where OQ = Distance between the centre of circular flank and centre of nose) ω² × OQ cosθ ω² × OQ ω² × OQ tanθ ω² × OQ sinθ ω² × OQ cosθ ω² × OQ ω² × OQ tanθ ω² × OQ sinθ ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS