Theory of Machine Kinematic pairs are those which have Elements of pairs not held together mechanically Two elements that permit relative motion Surface contact between the two elements when in motion Point or line contact between the two elements when in motion Elements of pairs not held together mechanically Two elements that permit relative motion Surface contact between the two elements when in motion Point or line contact between the two elements when in motion ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which of the following is a lower pair? Piston and cylinder Ball and socket i Both (A) and (B) above Cam and follower Piston and cylinder Ball and socket i Both (A) and (B) above Cam and follower ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The example of completely constrained motion is a All of these Motion of a shaft with collars at each end in a circular hole Motion of a square bar in a square hole Motion of a piston in the cylinder of a steam engine All of these Motion of a shaft with collars at each end in a circular hole Motion of a square bar in a square hole Motion of a piston in the cylinder of a steam engine ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The centre of gravity of a coupler link in a four bar mechanism will experience No acceleration Only angular acceleration Both linear and angular acceleration Only linear acceleration No acceleration Only angular acceleration Both linear and angular acceleration Only linear acceleration ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Flexible coupling is used because It is easy to engage and disengage It transmits shocks gradually It prevents shock transmission and eliminates stress reversals It is easy to disassemble It is easy to engage and disengage It transmits shocks gradually It prevents shock transmission and eliminates stress reversals It is easy to disassemble ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a circular arc cam with roller follower, the acceleration in any position of the lift will depend only upon Mass of cam follower linkage, spring stiffness and cam speed Radius of circular arc, cam speed, location of centre of circular arc and roller diameter Total lift, total angle of lift, minimum radius of cam and cam speed Total lift, centre of gravity of the cam and cam speed Mass of cam follower linkage, spring stiffness and cam speed Radius of circular arc, cam speed, location of centre of circular arc and roller diameter Total lift, total angle of lift, minimum radius of cam and cam speed Total lift, centre of gravity of the cam and cam speed ANSWER DOWNLOAD EXAMIANS APP
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