MACHINE DESIGN QUIZ

The number of slots in a 25 mm castle nut is

6

2

4

8

TRUE ANSWER : ?
YOUR ANSWER : ?

Fabric belts are used in industrial applications because

They can work at high temperature

They are cheap

They are unaffected by moisture and humidity

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

According to Indian standard specifications, plain carbon steel designated by 40C8 contains carbon

None of these

0.40 to 0.60%

0.20 to 0.40%

0.35 to 0.45%

TRUE ANSWER : ?
YOUR ANSWER : ?

If a material fails below its yield point, failure would be due to

Sudden loading

Creep

Fatigue

Straining

TRUE ANSWER : ?
YOUR ANSWER : ?

Coaxing is the procedure of increasing

Metal hardness by surface treatment

Metal resistance to corrosion by coating

Fatigue limit by over-stressing the metal by successively increasing loadings

Metal strength by cycling

TRUE ANSWER : ?
YOUR ANSWER : ?

Shaft coupling is used in machinery to

Introduce mechanical flexibility

Reduce the transmission of shock loads

All of these

Introduce protection against over loads

TRUE ANSWER : ?
YOUR ANSWER : ?

A transmission shaft includes

Counter shaft

All of these

Line shaft

Over head shaft

TRUE ANSWER : ?
YOUR ANSWER : ?

Taper usually provided on cotter is

1 in 10

1 in 40

1 in 24

1 in 5

TRUE ANSWER : ?
YOUR ANSWER : ?

The usual clearance provided in hydrodynamic bearing per mm of diameter of shaft is

0.1 micron

10 microns

1 micron

0.01 micron

TRUE ANSWER : ?
YOUR ANSWER : ?

When compared to the rod of the same diameter and material, a wire rope

Has a much smaller load carrying capacity

Does not provide much warning before failure

Provides much greater time for remedial action before failure

Is less flexible

TRUE ANSWER : ?
YOUR ANSWER : ?

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