Design of Structures (3150612) MCQs

MCQs of Limit state design of Steel components

Showing 31 to 40 out of 129 Questions
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31.

Which of the following is not a reason for incomplete fusion?

(a)

Surfaces to be jointed are coated with oxides
(b)

Insufficient current supplied by welding equipment
(c)

High rate of welding
(d)

Use of large electrode
Answer:

Option (d)

32.

Which of the following is true?

(a)

Incomplete penetration is found in fillet welds
(b)

It is due to use of large size of electrodes
(c)

It is due to excessive welding current
(d)

It is due to insufficient welding rates
Answer:

Option (b)

33.

Which of the following is not true?

(a)

Porosity is caused due to insufficient current
(b)

It is caused due to longer arc length
(c)

It may be due to poor welding procedure
(d)

It results in stress concentration
Answer:

Option (a)

34.

Hot cracks can be prevented by __________

(a)

Faster cooling
(b)

Non uniform heating
(c)

Pre-heating
(d)

Slower cooling
Answer:

Option (d)

35.

Cold cracks can be prevented by __________

(a)

Uniform heating
(b)

By use of low hydrogen electrode
(c)

Faster cooling
(d)

Slower cooling
Answer:

Option (b)

36.

The types of welded joints does not depend on _________

(a)

Size of members connected at joint
(b)

Type of loading
(c)

Area available for welding
(d)

Size of weld
Answer:

Option (d)

37.

Which of the following are correct regarding butt joints over lap joints?

(a)

Lap joints eliminates eccentricity whereas butt joints develops eccentricity
(b)

Butt joints minimizes the size of connection
(c)

Lap joints are aesthetically pleasing over butt joints
(d)

Butt joint obtained from full penetration groove weld has 50% efficiency
Answer:

Option (b)

38.

Which of the following is not true regarding lap joint?

(a)

Connection using lap joint requires large number of erection bolts
(b)

It can accommodate minor errors in fabrication
(c)

Lap joints are well suited for shop as well as field welding
(d)

It introduces some eccentricity of loads
Answer:

Option (a)

39.

Which of the following are not the assumptions made in the analysis of welded joints?

(a)

Welds connecting various joints are homogeneous, isotropic
(b)

Parts connected by weld are rigid
(c)

Only stresses due to internal forces are considered
(d)

Effects of residual stresses are neglected
Answer:

Option (c)

40.

The minimum size of fillet weld should _______

(a)

Not be less than 3mm
(b)

Be less than 3mm
(c)

Be less than 2mm
(d)

Greater than thickness of thinner part joined
Answer:

Option (a)

Showing 31 to 40 out of 129 Questions
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