Theory of Machine In a simple harmonic motion, the velocity vector with respect to displacement vector Leads by 90° Is in phase Lags by 90° Leads by 180° Leads by 90° Is in phase Lags by 90° Leads by 180° ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel, and φ = Pressure angle) [(r² + R²) cosφ]/2 [(r + R) sinφ]/2 [(r + R) cosφ]/2 [(r² + R²) sinφ]/2 [(r² + R²) cosφ]/2 [(r + R) sinφ]/2 [(r + R) cosφ]/2 [(r² + R²) sinφ]/2 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 135° and 315° 270° and 360° 0° and 90° 90° and 180° 135° and 315° 270° and 360° 0° and 90° 90° and 180° ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In an open pair, the two elements of a pair Are kept in contact by the action of external forces, when in motion Have a surface contact when in motion Are not held together mechanically Have a line or point contact when in motion Are kept in contact by the action of external forces, when in motion Have a surface contact when in motion Are not held together mechanically Have a line or point contact when in motion ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The power transmitted by a belt is maximum when the maximum tension in the belt is _________ of centrifugal tension. Three times Two-third One-third Double Three times Two-third One-third Double ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Hammer blow Varies inversely with the square of the speed Is the maximum vertical unbalanced force caused by the mass added to balance the reciprocating masses Is the maximum horizontal unbalanced force caused by the mass provided to balance the reciprocating masses. Varies as the square root of the speed Varies inversely with the square of the speed Is the maximum vertical unbalanced force caused by the mass added to balance the reciprocating masses Is the maximum horizontal unbalanced force caused by the mass provided to balance the reciprocating masses. Varies as the square root of the speed ANSWER DOWNLOAD EXAMIANS APP
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