Machine Design MCQs

Question 1

The function of a washer is to

Accepted Answer

Provide bearing area

Answer

Provide cushioning effect

Answer

Absorb shocks and vibrations

Answer

Provide smooth surface in place of rough surface

Question 2

The load cup of a screw jack is made separate from the head of the spindle to

Accepted Answer

Prevent the rotation of load being lifted

Answer

Enhance the load carrying capacity of the jack

Answer

Reduce the effort needed for lifting the working load

Answer

Reduce the value of frictional torque

Question 3

Silver based solder is used for

Accepted Answer

Brazing

Answer

Flaring

Answer

Soft soldering

Answer

Fusion welding

Question 4

The endurance limit for a mirror polished material will be __________ as compared to unpolished material.

Accepted Answer

More

Answer

Same

Answer

Less

Answer

None of these

Question 5

Eye bolts are used for

Accepted Answer

Lifting and transportation of machines and cubicles

Answer

Foundation purposes

Answer

Absorbing shock and vibrations

Answer

Transmission of power

Question 6

When a shaft is subjected to combined twisting moment (T) and bending moment (M), then the equivalent twisting moment is equal to

Accepted Answer

$$\sqrt {{{	ext{M}}^2} + {{	ext{T}}^2}} $$

Answer

$$\frac{1}{2}\sqrt {{{	ext{M}}^2} + {{	ext{T}}^2}} $$

Answer

$$\frac{1}{2}\left( {{	ext{M}} + \sqrt {{{	ext{M}}^2} + {{	ext{T}}^2}} } ight)$$

Answer

$${	ext{M}} + \sqrt {{{	ext{M}}^2} + {{	ext{T}}^2}} $$

Question 7

A transmission shaft includes

Accepted Answer

All of these

Answer

Over head shaft

Answer

Counter shaft

Answer

Line shaft

Question 8

A universal coupling is used to connect two shafts

Accepted Answer

Whose axes intersect at a small angle

Answer

Which are not in exact alignment

Answer

Which are perfectly aligned

Answer

Have lateral misalignment

Question 9

Oldham coupling is used to connect two shafts

Accepted Answer

Which have lateral misalignment

Answer

Which are perfectly aligned

Answer

Which are not in exact alignment

Answer

Whose axes intersect at a small angle