Theory of Machine A shaft has two heavy rotors mounted on it. The transverse natural frequencies, considering each of the rotor separately, are 100 Hz and 200 Hz respectively. The lowest critical speed is 5,367 r.p.m. 6,000 r.p.m. 9,360 r.p.m. 12,000 r.p.m. 5,367 r.p.m. 6,000 r.p.m. 9,360 r.p.m. 12,000 r.p.m. ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A kinematic chain requires at least 5 links and 4 turning pairs 2 links and 3 turning pairs 4 links and 4 turning pairs 3 links and 4 turning pairs 5 links and 4 turning pairs 2 links and 3 turning pairs 4 links and 4 turning pairs 3 links and 4 turning pairs ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The example of successfully constrained motion is a All of these Motion of the shaft between a footstep bearing Motion of an I.C. engine valve Piston reciprocating inside an engine cylinder All of these Motion of the shaft between a footstep bearing Motion of an I.C. engine valve Piston reciprocating inside an engine cylinder ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A body of weight W is required to move up the rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by (where μ = tan φ = Coefficient of friction between the plane and the body) P = W (sin α + μ cos α) P = W tan (α + φ) P = W tan α P = W (cos α + μ sin α) P = W (sin α + μ cos α) P = W tan (α + φ) P = W tan α P = W (cos α + μ sin α) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine If the opposite links of a four bar linkage are equal, the links will always form a Rectangle Parallelogram Pentagon Triangle Rectangle Parallelogram Pentagon Triangle 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) ω² √(x² - r²) ω √(x² - r²) ω² √(r² - x²) ω √(r² - x²) ω² √(x² - r²) ω √(x² - r²) ω² √(r² - x²) ω √(r² - x²) ANSWER DOWNLOAD EXAMIANS APP
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