Idler pulley is used for
A.Maintaining belt tension
B.Changing direction of rotation
C.For stopping motion frequently
D.For running during idling periods only
E.None of the above
Category: Theory of Machines Mcqs
The critical speed of a shaft is affected by
A.Diameter of the disc
B.Eccentricity
C.Span of the shaft
D.All of the above
E.None of the above
A standard gear cutter No. 3 is marked to cut 35-54 teeth. It implies that
A.The cutter is to be replaced after cutting 54 teeth
B.The cutter will be suitable for gears having 35 to 54 teeth
C.The cutter will be suitable for spur gear teeth cutting only
D.The cutter will provide correct profile for any gear having number of teeth in the range 35 to 54
E.None of the above
A cam profile is the
A.Profile of path traced by a cam follower
B.Actual working contour of the cam
C.The profile of the path to be traced by the mechanism driven by follower
D.Total surface area of the cam
E.Path which the cam follower traces
The mechanism used in a petrol engine is
A.Crank mechanism
B.Slider mechanism
C.Slider crank mechanism
D.Natural line and circular mechanism
E.None of the above
The key generally used in wrist watches is
A.Saddle key
B.Sunk key
C.Wood ruff key
D.Tangent key
E.None of the above
Can simple band brake be made self-energising type
A.Yes
B.Yes, but with few limitations
C.Yes, but with require several modifications
D.No
E.Will not be economical
A gear box in an automobile utilises
A.Simple gear train
B.Compound gear train
C.Epicyclic gear train
D.Compound-epicyclic gear train
E.None of the above
Hammer blow in locomotives results in
A.Pulsating torque
B.Uniform torque
C.Tendency to lift wheel from rails
D.Uneven speed
E.Variable horizontal force
Kinematics of machines deals with
A.Apparatus for applying mechanical power
B.Number of inter-related parts
C.The forces acting on the parts of the machine
D.The relative motion between the parts, neglecting the consideration of the force
E.None of the above
