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. 5,367 r.p.m. 12,000 r.p.m. 6,000 r.p.m. 9,360 r.p.m. 5,367 r.p.m. 12,000 r.p.m. 6,000 r.p.m. ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The secondary unbalanced force is maximum __________ in one revolution of the crank. Two times Eight times Four times Sixteen times Two times Eight times Four times Sixteen times 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 variation in centre distance of shafts increases radial force. The pressure angle is constant throughout the teeth engagement. A convex flank is always in contact with concave flank. The interference is inherently absent. The variation in centre distance of shafts increases radial force. The pressure angle is constant throughout the teeth engagement. ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The cam follower generally used in aircraft engines is Knife edge follower Flat faced follower Spherical faced follower Roller follower Knife edge follower Flat faced follower Spherical faced follower Roller follower ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The periodic time is given by (where ω = Angular velocity of the particle in rad/s) ω/2π 2π/ω π/ω ω × 2π ω/2π 2π/ω π/ω ω × 2π ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The frequency of damped vibrations with viscous damping is ________ the frequency of undamped vibrations. More than Same as None of these Less than More than Same as None of these Less than ANSWER DOWNLOAD EXAMIANS APP
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