Theory of Machine The instantaneous centers which vary with the configuration of mechanism are called Fixed instantaneous centers Permanent instantaneous centers None of these Neither fixed nor permanent instantaneous centers Fixed instantaneous centers Permanent instantaneous centers None of these Neither fixed nor permanent instantaneous centers ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which one of the following is an exact straight line mechanism using lower pairs? Watt’s mechanism Robert’s mechanism Grasshopper mechanism Peaucellier’s mechanism Watt’s mechanism Robert’s mechanism Grasshopper mechanism Peaucellier’s mechanism ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The equation of motion for a vibrating system with viscous damping is (d²x/dt²) + (c/m).(dx/dt) + (s/m).x = 0, if the roots of the equation are __________ then the system will be under damped. Complex conjugate Equal None of these Real Complex conjugate Equal None of these Real ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which of the following is used to control the speed variations of the engine caused by the fluctuations of the engine turning moment? Flywheel D-slide valve Governor Meyer's expansion valve Flywheel D-slide valve Governor Meyer's expansion valve ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which of the below are inversions of slider crank mechanism? 1. Oscillating cylinder engine mechanism 2. Toggle mechanism 3. Radial cylinder engine mechanism 4. Quick return mechanism 1, 2 and 3 1, 2 and 4 2, 3 and 4 1, 3 and 4 1, 2 and 3 1, 2 and 4 2, 3 and 4 1, 3 and 4 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The acceleration of a flat-faced follower when it has contact with the flank of a circular arc cam, is given by ω² (R - r₁) cosθ ω² r₁ sinθ ω² (R - r₁) sinθ ω² R cosθ ω² (R - r₁) cosθ ω² r₁ sinθ ω² (R - r₁) sinθ ω² R cosθ ANSWER DOWNLOAD EXAMIANS APP
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