Related Questions

Hall effect is observed in a specimen (metal or semi conductor) when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is
A Normal to both current and magnetic field
B In the same direction as current
C In a direction anti parallel to magnetic field
D None of the above
Hall effect is observed in a specimen when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is
A Normal to both current and magnetic field
B In the direction of current
C Antiparallel to magnetic field
D In arbitrary direction
Tensile strength of a mild steel specimen can be roughly predicted from following hardness test
A Brinell
B Rockwell
C Vickers
D None of the above
The ratio of the largest load in a test to the original cross-sectional area of the test specimen is called the __________ stress.
A Yield point
B Breaking
C Ultimate
D None of these
In what ratio must a mixture of 11% sugar strength be mixed with that of 25% sugar strength so as to get a new mixture of 13% sugar strength?
A 5:1
B 6:1
C 7:2
D 10:3
The ductility of a material __________ with the increase in percentage reduction in area of a specimen under tensile test.
A Increases
B Decreases
C Remains same
D None of these
The ductility of the material __________ with the decrease in percentage elongation of a specimen under tensile test.
A Increases
B Decreases
C Remain same
D None of these
A specimen of aluminium metal when observed under microscope shows
A B.C.C. crystalline structure
B F.C.C. crystal structure
C H.C.P. structure
D A complex cubic structure
The behaviour of a metal specimen, which when plastically strained in tension reduces its yield stress in compression and vice versa; is termed as the
A Work hardening
B Bauschinger effect
C Creeping effect
D Stress recovery effect
The test strength of the sample is taken as the average of the strength of
A 2 specimens
B 3 specimens
C 4 specimens
D 5 specimens

Next steps