A.Straight line
B.Circle
C.Parabola
D.Hyperbola
E.Ellipse

A.3
B.4
C.5
D.6
E.7

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

## 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