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
Category: Theory of Machines Mcqs
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
In case of locomotives, the swaying couple is resisted by
A.Dead weight of the engine
B.Fish plates of the tails
C.Inside section of the rails
D.Side pressure between the flanges of the wheels
E.(C) and (D) together
The secondary critical speed of a shaft occurs at
A.Half the primary critical speed
B.Twice the primary critical speed
C.Four times the primary critical speed
D.Occurs only when there are more than 2 rotors on a shaft
E.If the externam exciting system has a frequency other than the primary critical speed
