Engineering :: Strength of Materials

@ : Home > Civil Engineering > Strength of Materials

321.

The compressive strength of brittle materials is

A.	equal to	B.	less than
C.	greater than

322.

A tensile test is performed on a mild steel round bar. Its diameter after fracture will

A.	remain same	B.	increase
C.	decrease	D.	depend upon rate of loading

323.

A tensile test is performed on a round bar. After fracture it has been found that the diameter remains approximately same at fracture. The material under test was

A.	mild steel	B.	cast iron
C.	glass	D.	copper

324.

If percentage reduction in area of a certain specimen made of material 'A' under tensile test is 60% and the percentage reduction in area of a specimen with same dimensions made of material 'B' is 40%, then

A.	the material A is more ductile than material B	B.	the material B is more ductile than material A
C.	the ductility of material A and B is equal	D.	the material A is brittle and material B is ductile

325.

If percentage elongation of a certain specimen made of a material 'A' under tensile test is 30% and the percentage elongation of a specimen with same dimensions made of another material 'B' is 40%, then material 'B' is more ductile than material 'A'.

Right

Wrong

326.

The ductility of a material

A.	increases	B.	decreases
C.	remains same

327.

The ductility of the material

A.	increases	B.	decreases
C.	remains same

328.

Factor of safety is defined as the ratio of

A.	ultimate stress to working stress	B.	working stress to ultimate stress
C.	breaking stress to ultimate stress	D.	ultimate stress to breaking stress

329.

The factor of safety is always more than unity.

Correct

Incorrect

330.

In compression test, the fracture in cast iron specimen would occur along

A.	the axis of load	B.	an oblique plane
C.	at right angles to the axis of specimen	D.	would not occur