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
Category: Theory of Machines Mcqs
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
In case of V-belts
A.Belts should touch the bottom of groove in pulley
B.Belts should not touch the bottom of groove in pulley
C.Grooves in pulley are generally wider than the belt
D.The efficiency of transmission is less
E.Tension in belt remains constant throughout
The pulley in a belt drive acts as
A.Cylindrical pair
B.Sliding pair
C.Rolling pair
D.Turning pair
E.Spherical pair
