Theory of Machine The unbalanced force due to reciprocating masses Varies in magnitude but constant in direction Varies in magnitude and direction both Varies in direction but constant in magnitude Constant in magnitude and direction both Varies in magnitude but constant in direction Varies in magnitude and direction both Varies in direction but constant in magnitude Constant in magnitude and direction both ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a vibrating system, if the actual damping coefficient is 40 N/m/s and critical damping coefficient is 420 N/m/s, then logarithmic decrement is equal to 0.8 0.4 0.2 0.6 0.8 0.4 0.2 0.6 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The natural frequency of free torsional vibrations of a shaft is equal to (where q = Torsional stiffness of the shaft, and I = Mass moment of inertia of the disc attached at the end of a shaft) 2π qI 2π. √(q/I) (1/2π). √(q/I) 1/2π 2π qI 2π. √(q/I) (1/2π). √(q/I) 1/2π ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine If there are L number of links in a mechanism, then number of possible inversions is equal to L - 1 L + 1 L L + 2 L - 1 L + 1 L L + 2 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The driving and driven shafts connected by a Hooke's joint will have equal speeds, if cosθ = sinα tanθ = ± cosα sinθ = ± tanα cotθ = cosα cosθ = sinα tanθ = ± cosα sinθ = ± tanα cotθ = cosα ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine It is required to connect two parallel shafts, the distance between whose axes is small and variable. The shafts are coupled by Flexible coupling Universal joint Knuckle joint Oldham's coupling Flexible coupling Universal joint Knuckle joint Oldham's coupling ANSWER DOWNLOAD EXAMIANS APP
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