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_____________?”
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
A.Track curvature
B.Track contour
C.Shape of rails
D.Taper on rails
E.Taper on wheels
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
A.Cylindrical pair
B.Sliding pair
C.Rolling pair
D.Turning pair
E.Spherical pair
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
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
A.All the belts have to be replaced
B.Broken belt may be replaced by the similar etc
C.Broken belt and at least one adjacent belt should be replaced
D.Broken belt and at least two adjacent belt should be replaced
E.None of the above
A.Circular pitch
B.Diametral pitch
C.Module
D.Any of the above
E.None of the above
A.Velocity polygon
B.Acceleration polygon
C.Four bar chain mechanism
D.Slider crank mechanism
E.Angular accelerations
