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Design Questions Set 20:

Quiz Mode

For optimization, the parameters that are typically minimized are:

Deflection

Time

Conduction

Height

Solution:

What decreases the fatigue strength of a material?

Shot peening

Case hardening

Inclusions

Grain refinement

Solution:

Find the ratio of the diameter of the rivet hole to the pitch of the rivets, if the tearing efficiency of a riveted joint is 75%.

0.25

0.30

0.50

0.75

Solution:

Which of the following is the most suitable mechanical component used to transfer the rotation from one shaft to another?

Keys

Coupling

External Circlip

Collar

Solution:

The material that should be able to adjust or accommodate bearing inaccuracies and deflections without much wear and heating is called?

Comfortability

Embeddability

Bondability

Fatigue Strength

Solution:

The pinion has 30 teeth and the gear has 48 teeth. The module is 4 mm. What are the pitch circle diameters of the pinion and the gear?

120 mm and 192 mm

150 mm and 222 mm

130 mm and 202 mm

140 mm and 212 mm

Solution:

Why is pre-tensioning of a bolted joint used?

To strain harden the bolt head

To decrease the stiffness of the bolted joint

To increase the stiffness of the bolted joint

To prevent yielding of the thread root

Solution:

What is the correct definition of the modulus of resilience?

The maximum strain energy per unit volume

The maximum strain energy per unit area

The maximum kinetic energy per unit volume

The maximum potential energy per unit time

Solution:

What is the second property of the shaft design?

The shaft design should be such that it has high tensile strength

The shaft design should be such that it has high corrosion resistance

The shaft design should be such that it has high rigidity

The shaft design should be such that it can withstand voltage fluctuations

Solution:

Which of the following statements is correct about thick film lubrication?

A stable lubrication and there is no metal to metal contact

A stable lubrication because there is some amount of metal to metal contact

An unstable lubrication because there is some amount of metal to metal contact

An unstable lubrication because there is no metal to metal contact

Design Questions Set 20:

For optimization, the parameters that are typically minimized are:

Solution:

What decreases the fatigue strength of a material?

Solution:

Find the ratio of the diameter of the rivet hole to the pitch of the rivets, if the tearing efficiency of a riveted joint is 75%.

Solution:

Which of the following is the most suitable mechanical component used to transfer the rotation from one shaft to another?

Solution:

The material that should be able to adjust or accommodate bearing inaccuracies and deflections without much wear and heating is called?

Solution:

The pinion has 30 teeth and the gear has 48 teeth. The module is 4 mm. What are the pitch circle diameters of the pinion and the gear?

Solution:

Why is pre-tensioning of a bolted joint used?

Solution:

What is the correct definition of the modulus of resilience?

Solution:

What is the second property of the shaft design?

Solution:

Which of the following statements is correct about thick film lubrication?

Solution:

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