A ferromagnet will become fully magnetized at
A. High voltage A.C
B. Low voltage A.C
C. Alternating current at its peak value
D. D.C current at peak value
A ferromagnet will become fully magnetized at Read More »
Physics
The energy band occupied by the valence electrons is called
A. Energy state
B. Valence band
C. ve energy state
D. conduction band
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Formation of large molecule by joining small molecules is
A. Fusion
B. Polymerization
C. Crystallization
D. Subtraction
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A wire is stretched by a force F which causes an extension 1. The energy stored in the wire is
A. The extension of the wire is proportional to the force applied
B. The weight of the wire is negligible
C. The wire is not stretched beyond its elastic limit
D. The cross sectional area of the wire remains constant
The ration stress to strain in youngs modulus of the material then tension is
A. Directly proportional to extension
B. Directly proportional to strain
C. Directly proportional to square of amplitude
D. Inversely proportional to extension
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certain stress applied to an elastic material produces a certain strain in it. If the elastic limit is not exceeded the energy gained per unit volume of the material is given by
A. Stress/strain
B. (stress/strain)
C. Stress x strain
D. (Stress / strain)
Which physical quantity does not have the dimensions of force per unit area ?
A. Stress
B. Strain
C. Youngs modulus
D. Pressure
Which physical quantity does not have the dimensions of force per unit area ? Read More »
What are the dimensions of stress ?
A. MLT-2
B. ML-2T-1
C. ML-1T-2
D. ML-T-1
What are the dimensions of stress ? Read More »