Theory of Machine Hammer blow 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 inversely with the square of the speed Varies as the square root 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 inversely with the square of the speed Varies as the square root of the speed 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) [(r + R) cosφ]/2 [(r² + R²) sinφ]/2 [(r + R) sinφ]/2 [(r² + R²) cosφ]/2 [(r + R) cosφ]/2 [(r² + R²) sinφ]/2 [(r + R) sinφ]/2 [(r² + R²) cosφ]/2 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The example of higher pair is Ball and roller bearings Belt, rope and chain drives Gears, cams All of these Ball and roller bearings Belt, rope and chain drives Gears, cams All of these ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The tractive force in a locomotive with two cylinders is given by (where c = Fraction of reciprocating parts per cylinder, m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, and θ = Angle of inclination of crank to the line of stroke) m.ω².r (cosθ - sinθ) m.ω².r sinθ (1 - c).m.ω².r (cosθ - sinθ) m.ω².r cosθ m.ω².r (cosθ - sinθ) m.ω².r sinθ (1 - c).m.ω².r (cosθ - sinθ) m.ω².r cosθ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Instantaneous center of rotation of a link in a four bar mechanism lies on Can’t occur Right side pivot of this link A point obtained by intersection on extending adjoining links Left side pivot of this link Can’t occur Right side pivot of this link A point obtained by intersection on extending adjoining links Left side pivot of this link ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The frictional torque transmitted in a truncated conical pivot bearing, considering uniform pressure, is (1/2). μ W cosecα [(r₁³ - r₂³)/(r₁² - r₂²)] (2/3). μ W cosecα [(r₁³ - r₂³)/(r₁² - r₂²)] (2/3). μ W cosecα (r₁ + r₂) (1/2). μ W cosecα (r₁ + r₂) (1/2). μ W cosecα [(r₁³ - r₂³)/(r₁² - r₂²)] (2/3). μ W cosecα [(r₁³ - r₂³)/(r₁² - r₂²)] (2/3). μ W cosecα (r₁ + r₂) (1/2). μ W cosecα (r₁ + r₂) ANSWER DOWNLOAD EXAMIANS APP
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