In the elliptical trammel mechanism, the mid-point of the link connecting the two sliders traverses
A.an elliptical path
B.a parobolic path
C.a circular path
D.none of the above
Category: Theory of Machines Mcqs
In case of involute gears
A.Interference is inherently absent
B.A convex flank is always in contact with concave flank
C.Variation in centre distance of shafts increases radial force
D.Pressure angle is constant throughout the teeth engagement
E.None of the above
Which of the following gears is free from axial thrust
A.Worm gears
B.Herringbone gears
C.Spiral gears
D.Helical gears
E.Bevel grars
A 0.5 kg weight attached to a light spring elogates it 7.87 mm. The natural frequency of the system would be in the range
A.25-50 cpm
B.50-100 cpm
C.100-175 cpm
D.175-290 cpm
E.300-350 cpm
A point on a link connecting double slider crank chain will trace a (an)
A.Straight line
B.Circle
C.Parabola
D.Hyperbola
E.Ellipse
The number of links in a pantograph is equal to
A.3
B.4
C.5
D.6
E.7
In a car, transmission losses will be minimum in
A.Direct gear
B.First gear
C.Second gear
D.Third gear
Isochronism in a governor is desirable when_____________?
A.The engine operatres at low speeds
B.The engine operates at high speeds
C.The engine operates at variable speeds
D.One speed is desired to be kept for all loads
E.One speed is desired under one load
Continue reading “Isochronism in a governor is desirable when_____________?”
The linear velocity of a point on a link relative to any other point on the link will be
A.Along the line joining the two points
B.Perpendicular to the line joining the two points
C.Same as that of the end points of link
D.Perpendicular to the lower end of the link
E.None of the above
The purpose of differential in locmomtive is served by
A.Track curvature
B.Track contour
C.Shape of rails
D.Taper on rails
E.Taper on wheels
