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Mechanical Engineering Objective Questions
{ Machine Design }
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Mechanical Engineering
// Machine Design
148. Shape of wood-ruff key is like
A. Cylinder
B. Semicircle
C. Sphere
D. Trapezoid
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149. In welded joint the throat of weld as compared to size of weld is
A. About same size
B. About 0.7 times
C. About 0.5 times
D. About 0.25 times
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150. Tangent key
A. Is provided in the hub only and hollowed to fit the shaft
B. Has, flat surface and the shaft is planned off to accommodate the key
C. Is fitted such that each withstands torsion in one direction only
D. Is designed to fit in a sunk key-way whose bed is parallel to the axis of shaft
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151. Kennedy keys are used for applications like
A. Precision duty
B. Light duty
C. Rough and heavy services
D. All of the above
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152. Which key transmits power through frictional resistance only
A. Wood-ruff
B. Kennedy
C. Sunk
D. Saddle
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153. Which of the following key transmits power through frictional resistance only
A. Square key
B. Tapered key
C. Kennedy key
D. Saddle key
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154. Flat key
A. Is provided in the bulb only and hollowed to fit the shaft
B. Has flat surface and the shaft is planed off to accommodate the key
C. Is fitted such that each withstands torsion in one direction only
D. Is designed to fit in a sunk key way whose bed is parallel to the axis of shaft
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