Theory of Machine The instantaneous centers which vary with the configuration of mechanism are called None of these Neither fixed nor permanent instantaneous centers Fixed instantaneous centers Permanent instantaneous centers None of these Neither fixed nor permanent instantaneous centers Fixed instantaneous centers Permanent instantaneous centers ANSWER DOWNLOAD EXAMIANS APP
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 9,360 r.p.m. 6,000 r.p.m. 5,367 r.p.m. 12,000 r.p.m. 9,360 r.p.m. 6,000 r.p.m. 5,367 r.p.m. 12,000 r.p.m. ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When the relation between the controlling force (Fc) and radius of rotation (r) for a spring controlled governor is Fc = ar + b, then the governor will be Isochronous Stable Unstable None of these Isochronous Stable Unstable None of these ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The periodic time is given by (where ω = Angular velocity of the particle in rad/s) π/ω ω × 2π 2π/ω ω/2π π/ω ω × 2π 2π/ω ω/2π ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which of the following statement is correct for involute gears? A convex flank is always in contact with concave flank. The interference is inherently absent. The pressure angle is constant throughout the teeth engagement. The variation in centre distance of shafts increases radial force. A convex flank is always in contact with concave flank. The interference is inherently absent. The pressure angle is constant throughout the teeth engagement. The variation in centre distance of shafts increases radial force. ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The tendency of a body to resist change from rest or motion is known as Friction Resisting force Inertia Mass Friction Resisting force Inertia Mass ANSWER DOWNLOAD EXAMIANS APP
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