MACHINE DESIGN QUIZ

The included angle between the sides of V-belt is

38°

40°

60°

45°

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A hot short metal is

Brittle when cold

Brittle under all conditions

Brittle when hot

Ductile at high temperature

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Maximum principal stress theory is applicable for

Brittle materials

Ductile materials

Elastic materials

All of these

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The stress which vary from a minimum value to a maximum value of the same nature (i.e. tensile or compressive) is called

Yield stress

Alternating stress

Repeated stress

Fluctuating stress

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The sleeve or muff coupling is designed as a

Thick cylinder

Solid shaft

Hollow shaft

Dun cylinder

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In the levers of __________ type, the mechanical advantage is less than one.

None of these

Second

First

Third

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When the speed of belt increases,

The coefficient of friction between the belt and pulley increases

The coefficient of friction between the belt and pulley decreases

The power transmitted will decrease

The power transmitted will increase

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A self locking screw has

Fine threads

Coefficient of friction is greater than tangent of load angle

Course threads

Hole for inserting split pin

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The shear modulus of resilience is proportional to

Shear stress

(Shear stress)⁴

(Shear stress)²

(Shear stress)3

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The maximum bending stress in a curved beam having symmetrical section always occur at the

Centroidal axis

Inside fiber

Outside fiber

Neutral axis

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