Theory of Machine The radius of a friction circle for a shaft rotating inside a bearing is (where r = Radius of shaft, and tan φ = Coefficient of friction between the shaft and bearing) r sinφ r tanφ r cosφ (r/2) cosφ r sinφ r tanφ r cosφ (r/2) cosφ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The secondary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, θ = Angle of inclination of crank with the line of stroke, and n = Ratio of the length of connecting rod to radius of crank) m.ω².r (cos 2θ/n) m.ω².r (sin 2θ/n) m.ω².r sinθ m.ω².r cosθ m.ω².r (cos 2θ/n) m.ω².r (sin 2θ/n) m.ω².r sinθ m.ω².r cosθ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The factor which affects the critical speed of a shaft is Eccentricity Diameter of disc Span of shaft All of the listed here Eccentricity Diameter of disc Span of shaft All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The amplitude of vibration is always __________ the radius of the circle. Equal to None of these Less than Greater than Equal to None of these Less than Greater than ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which of the following is an open pair? Lead screw and nut Ball and socket joint Journal bearing Cam and follower Lead screw and nut Ball and socket joint Journal bearing Cam and follower ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The C.G. of a link in any mechanism would experience Angular acceleration Both angular and linear accelerations No acceleration Linear acceleration Angular acceleration Both angular and linear accelerations No acceleration Linear acceleration ANSWER DOWNLOAD EXAMIANS APP
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