Theory of Machine A simple spring-mass vibrating system has a natural frequency of fn. If the spring stiffness is halved and the mass is doubled, then the natural frequency will become fn/2 8 fn 4 fn 2 fn fn/2 8 fn 4 fn 2 fn ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The condition for correct steering of a Davis steering gear is (where α = Angle of inclination of the links to the vertical) sinα = b/c tanα = c/2b cotα = c/2b cosα = c/b sinα = b/c tanα = c/2b cotα = c/2b cosα = c/b ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The velocity of a particle moving with simple harmonic motion, at any instant is given by (where ω = Displacement of the particle from mean position) ω √(r² - x²) ω² √(r² - x²) ω √(x² - r²) ω² √(x² - r²) ω √(r² - x²) ω² √(r² - x²) ω √(x² - r²) ω² √(x² - r²) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The advantage of the piston valve over the slide valve is that in the former case Wear is less Both wear and power absorbed are low Power absorbed is less The pressure developed being high provides tight sealing Wear is less Both wear and power absorbed are low Power absorbed is less The pressure developed being high provides tight sealing ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine For dynamic balancing of a shaft Both (A) and (B) The net dynamic force acting on the shaft is equal to zero The net couple due to the dynamic forces acting on the shaft is equal to zero None of these Both (A) and (B) The net dynamic force acting on the shaft is equal to zero The net couple due to the dynamic forces acting on the shaft is equal to zero None of these ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The dynamic friction is the friction experienced by a body, when the body Just begins to slide over the surface of the other body Is in motion Is at rest None of these Just begins to slide over the surface of the other body Is in motion Is at rest None of these ANSWER DOWNLOAD EXAMIANS APP
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