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What are the Electric Generators?
An electric generator is a situation in which a loop of conducting wire rotates in an area with a magnetic field. During the first half of the cycle, a positive magnetic field drives a clockwise current in the loop, and during the second half of the cycle, a now negative magnetic field generates a counterclockwise current. (If you are having trouble picturing this, pretend that you are an observer belted to the conductor.) The name "alternating current" (AC) is given to the current generated this way.
In the first half of the cycle, the current builds and falls in the positive direction, and in the second half of the cycle, the current builds up and weakens in the negative direction. If the loop is rotated at a steady pace, the current provided looks like a sine curve. A generator turns the mechanical energy of the loop of wire rotating into AC electric current. Batteries supply direct current (DC), a current which is roughly constant and in one direction only. A generator with a split ring can approximate a battery.
Q. State Moseley's law. The frequency of the spectral line in the qualities X-ray spectrum is directly proportional to the square of the atomic number (Z) of the element consid
(i) It having of district bright bands. (ii)It is given by an excited source in molecular state. (iii) E.g. Spectra of molecular NH 3 , CO, H 2 etc.
What is the difference between french beans and front office refraction
Mach number is the ratio of velocity of source to the velocity of sound. Mach Number = Velocity of Source / Velocity of Sound .
Light is quantized. Photons are light quanta. It has zero REST mass. Therefore, it always travels at maximum speed permitted by relativity.
Textile industry: High speed drives are essential with wide range of control, small & medium motors are employed. Commutator motors and synchronous motors are used.
THE SEMICONDUCTOR in which number of electrons or holes is smaller than N c and N v density of state in CB or VB are called non-degenerate semiconductor. The general exponential
what is gravitational field is?
The set of rectangular axes obeying the Newton's laws of motion and used to describe the position of a particle or an event are known as inertial frames of reference.
Put a nail in the lower end of a candle. The nail should be just the right weight to make the candle float with its top a little above the surface of the water. Float the candle an
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