Theory of Machine Which one of the following is an exact straight line mechanism using lower pairs? Grasshopper mechanism Watt’s mechanism Robert’s mechanism Peaucellier’s mechanism Grasshopper mechanism Watt’s mechanism Robert’s mechanism Peaucellier’s mechanism ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the Unbalanced forces are not dangerous at higher speeds Effects of unbalances are directly proportional to the speed Effects of unbalances are proportional to the square of the speed Unbalanced couples are caused only at higher speeds Unbalanced forces are not dangerous at higher speeds Effects of unbalances are directly proportional to the speed Effects of unbalances are proportional to the square of the speed Unbalanced couples are caused only at higher speeds ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A spring controlled governor is said to be stable if the controlling force line when produced intersects the Y-axis Below the origin Any one of these Above the origin At the origin Below the origin Any one of these Above the origin At the origin ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A friction circle is a circle drawn when a journal rotates in a bearing. Its radius depends upon the coefficient of friction and the Radius of journal Clearance between journal and bearing Magnitude of the forces on journal Angular velocity of journal Radius of journal Clearance between journal and bearing Magnitude of the forces on journal Angular velocity of journal ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which of the below are inversions of slider crank mechanism?1. Oscillating cylinder engine mechanism2. Toggle mechanism3. Radial cylinder engine mechanism4. Quick return mechanism 1, 2 and 3 1, 3 and 4 1, 2 and 4 2, 3 and 4 1, 2 and 3 1, 3 and 4 1, 2 and 4 2, 3 and 4 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In gramophones for adjusting the speed of the turntable, the following type of governor is commonly employed Pickering governor Wilson Hartnell governor Inertia governor Hartung governor Pickering governor Wilson Hartnell governor Inertia governor Hartung governor ANSWER DOWNLOAD EXAMIANS APP
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