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1
GATE ME 2012
MCQ (Single Correct Answer)
+1
-0.3
A solid disc of radius $$r$$ rolls without slipping on a horizontal floor with angular velocity $$\omega $$ and angular acceleration $$\alpha $$. The magnitude of the acceleration of the point of contact on the disc is
A
zero
B
$$r\alpha $$
C
$$\sqrt {{{\left( {r\alpha } \right)}^2} + {{\left( {r\omega } \right)}^2}} $$
D
$$r{\omega ^2}$$
2
GATE ME 2011
MCQ (Single Correct Answer)
+1
-0.3
A double - parallelogram mechanism is shown in the figure. Note that PQ is a single link. The mobility of the mechanism is GATE ME 2011 Theory of Machines - Analysis of Plane Mechanisms Question 53 English
A
$$-$$1
B
0
C
1
D
2
3
GATE ME 2010
MCQ (Single Correct Answer)
+1
-0.3
There are two points P and Q on a planar rigid body. The relative velocity between the two points
A
should always be along PQ
B
Can be oriented along any direction
C
should always be perpendicular to PQ
D
should be along QP when the body undergoes pure translation
4
GATE ME 2010
MCQ (Single Correct Answer)
+1
-0.3
Which of the following statements is INCORRECT
A
Grashof’s rule states that for a planar crank-rocker four bar mechanism, the sum of the shortest and longest link lengths cannot be less than the sum of the remaining two link lengths.
B
Inversions of a mechanism are created by fixing different links one at a time.
C
Geneva mechanism is an intermittent motion device
D
Gruebler’s criterion assumes mobility of a planar mechanism to be one.
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