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 = 0 and b is +ve a is +ve and b = 0 a is +ve and b is -ve a is +ve and b is also +ve a = 0 and b is +ve a is +ve and b = 0 a is +ve and b is -ve 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 m.ω².r sinθ m.ω².r (cosθ - sinθ) (1 - c).m.ω².r (cosθ - sinθ) m.ω².r cosθ m.ω².r sinθ m.ω².r (cosθ - sinθ) (1 - c).m.ω².r (cosθ - sinθ) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a Hartnell governor, the stiffness of the spring is given by (where S1 and S2 = Spring forces exerted on the sleeve at max. and min. radii of rotation, and h = Compression of the spring) (S₁ - S₂) / 2h (S₁ - S₂) / h (S₁ + S₂) / 2h (S₁ + S₂) / h (S₁ - S₂) / 2h (S₁ - S₂) / h (S₁ + S₂) / 2h (S₁ + S₂) / h ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The ratio of the maximum displacement of the forced vibration to the deflection due to the static force, is known as Magnification factor Damping coefficient Damping factor Logarithmic decrement Magnification factor Damping coefficient Damping factor Logarithmic decrement ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The natural frequency of free transverse vibrations due to a point load acting over a simply supported shaft is equal to (where δ = Static deflection of a simply supported shaft due to the point load) 0.5615/√δ 0.571/√δ 0.6253/√δ 0.4985/√δ 0.5615/√δ 0.571/√δ 0.6253/√δ 0.4985/√δ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Peaucellier’s mechanism has Six links Four links Eight links Twelve links Six links Four links Eight links Twelve links ANSWER DOWNLOAD EXAMIANS APP
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