Ø
A capacitor consists of
two conductors separated by an insulator.
Ø
A force of 10,000 N
accelerates a body to a velocity 0.1 km/s. Then, the power developed is 1000
kW.
Ø
Absolute instruments are
those which give the value of the quantity to be measured, in terms of the
constants of the instrument and their deflection only.
Ø
According to Faraday’s
Laws of Electromagnetic Induction, an e.m.f. is induced in a conductor whenever
it cuts magnetic flux.
Ø
According to Gauss’s
theorem, the surface integral of the normal component of electric flux density D over a closed surface
containing charge Q is Q.
Ø
A 100 W light bulb burns
on an average of 10 hours a day for two weeks. The weekly consumption of energy
will be 14 units.
Ø
According to Kirchhoff’s
voltage law, the algebraic sum of all IR drops and e.m.f. in any closed loop of
a network is always zero.
Ø
Active materials of a
lead-acid cell are lead peroxide, dilute sulphuric acid and sponge lead.
Ø
Advantages of Nuclear
Generation is that the Quantity of fuel required is small for generating a
given amount of electrical energy, compared to other fuels. It is more
reliable, cheaper for running cost, and it is efficient.
Ø
An e.m.f and the current
is induced in any conductor which is cut across or is cut by a magnetic flux is
known as electromagnetic induction.
Ø
Chemical effect is
utilized for DC ampere-hour meters.
Ø
Circle diagrams are
useful for analysing the operating characteristics of circuits, which, under
some conditions, are used in representing transmission lines and AC Electrical
machineries.
Ø
Damping force is one
which acts on the moving system of the instrument only when it is moving and
always opposes its motion.
Ø
Disadvantages of Nuclear
Generation is that the Fuel is expensive and not abundantly available
everywhere. It has high capital cost and maintenance cost. Disposal of Nuclear
waste is a problem.
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