Related Questions

Substances which have permeability less than the permeability of free space are known as
A Ferromagnetic
B Paramagnetic
C Diamagnetic
D Bipolar
Relative permeability of vacuum is
A 1
B 1 H/m
C $$4\pi \times {10^{ - 7}}$$
D $$\frac{1}{4}$$
Superconducting metal in super conducting state has relative permeability of
A Zero
B One
C Negative
D More than one
The relative permeability of a ferromagnetic material is
A Less than one
B More than one
C More than 10
D More than 100 or 1000
The relative permeability of materials is not constant.
A diamagnetic
B paramagnetic
C ferromagnetic
D insulating
Paramagnetic materials have relative permeability
A slightly less than unity
B equal to unity
C slightly more than unity
D equal to that ferromagnetic mate rials
The relative permeability is less than unity is case of
A ferromagnetic materials
B ferrites
C non-ferrous materials
D diamagnetic materials
During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact.
A Equal to
B Equal and opposite to
C Less than
D Greater than
In impulse turbines, when friction is neglected, the relative velocity of steam at outlet tip of the blade is _________ the relative velocity of steam at inlet tip of the blade.
A Equal to
B Less than
C Greater than
D None of these
Relative volatility varies with the concentration of component for an ideal solution. The relative volatity of a binary mixture may be defined as the ratio of vapor pressure of component 'A' to that of component 'B', when
A Only vapor phase follows Raoult's law
B Only liquid phase obeys Dalton's law
C Liquid phase obeys Dalton's law and vapor phase obeys Raoult's law
D Vapor phase obeys Dalton's law and liquid phase obeys Raoult's law

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