Machine Design MCQs

Question 1

Tangent key

Accepted Answer

Is fitted such that each withstands torsion in one direction only

Answer

Is provided in the hub only and hollowed to fit the shaft

Answer

Has, flat surface and the shaft is planned off to accommodate the key

Answer

Is designed to fit in a sunk key-way whose bed is parallel to the axis of shaft

Question 2

Kennedy keys are used for applications like

Accepted Answer

Rough and heavy services

Answer

Precision duty

Answer

Light duty

Answer

All of the above

Question 3

Which key transmits power through frictional resistance only

Accepted Answer

Saddle

Answer

Wood-ruff

Answer

Kennedy

Answer

Sunk

Question 4

Which of the following key transmits power through frictional resistance only

Accepted Answer

Saddle key

Answer

Square key

Answer

Tapered key

Answer

Kennedy key

Question 5

Flat key

Accepted Answer

Is fitted such that each withstands torsion in one direction only

Answer

Is provided in the bulb only and hollowed to fit the shaft

Answer

Has flat surface and the shaft is planed off to accommodate the key

Answer

Is designed to fit in a sunk key way whose bed is parallel to the axis of shaft

Question 6

In thick cylinders, the tangential stress across the thickness of cylinder is

Accepted Answer

Minimum at outside and maximum at inside

Answer

Zero at outside and maximum at inside

Answer

Uniform throughout

Answer

Unpredictable

Question 7

Thick cY1Mders are designed by

Accepted Answer

Lame's equation

Answer

Calculating radial stress which is uniform

Answer

Thick cylinder theory

Answer

Any one of the above

Question 8

For designing thick cylinders, following equation is used

Accepted Answer

All of the above

Answer

Barlow's

Answer

Birnie's

Answer

Lame's

Question 9

In thick cylinders, the radial stress across the thickness of cylinder is

Accepted Answer

Minimum at outside and maximum at inside

Answer

Zero at outside and maximum at inside

Answer

Uniform throughout

Answer

Unpredictable