Theory of Machine Kinematic pairs are those which have Two elements that permit relative motion Elements of pairs not held together mechanically Point or line contact between the two elements when in motion Surface contact between the two elements when in motion Two elements that permit relative motion Elements of pairs not held together mechanically Point or line contact between the two elements when in motion Surface contact between the two elements when in motion ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The unbalanced force due to revolving masses Varies in magnitude but constant in direction Varies in magnitude and direction both Varies in direction but constant in magnitude Constant in magnitude and direction both Varies in magnitude but constant in direction Varies in magnitude and direction both Varies in direction but constant in magnitude Constant in magnitude and direction both ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A Hartnell governor has its controlling force (Fc) given by Fc = ar + b, where r is the radius of rotation and a and b are constants. The governor becomes isochronous when a is +ve and b is also +ve a is +ve and b is -ve a = 0 and b is +ve a is +ve and b = 0 a is +ve and b is also +ve a is +ve and b is -ve a = 0 and b is +ve a is +ve and b = 0 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line of stroke PO and rotates with uniform angular velocity at ω rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral CQNO. The acceleration of the piston P with respect to the crank-pin C is given by ω² × CN ω² × CO ω² × NO ω² × QN ω² × CN ω² × CO ω² × NO ω² × QN ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine An involute pinion and gear are in mesh. If both have the same size of addendum, then there will be an interference between the Flanks of both gear and pinion Tip of the pinion and flank of gear Tip of both gear and pinion Tip of the gear tooth and flank of pinion Flanks of both gear and pinion Tip of the pinion and flank of gear Tip of both gear and pinion Tip of the gear tooth and flank of pinion ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which one of the following is an exact straight line mechanism using lower pairs? Watt’s mechanism Grasshopper mechanism Peaucellier’s mechanism Robert’s mechanism Watt’s mechanism Grasshopper mechanism Peaucellier’s mechanism Robert’s mechanism ANSWER DOWNLOAD EXAMIANS APP
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