by admin | Jun 3, 2015 | sem1
Acoustic Grating Principle: When ultrasonic waves are passed through a liquid, the density of the liquid varies layer by layer due to the variation in pressure and hence the liquid will act as a diffraction grating, so called acoustic grating. Under this condition,...
by admin | Jun 3, 2015 | sem1
Growth and Decay method (A) Growth of current Suppose in the beginning we close the switch in the up position as shown in below in the figure Switch is now closed and battery E,inductance L and resistance R are now connected in series Because of self induced emf...
by admin | Jun 3, 2015 | sem3
Member Functions in Classes Member functions are the functions, that has declaration inside the class definition and works on the data members of the class. The definition of member functions can be inside or outside the definition of class. If the member function is...
by admin | Jun 3, 2015 | sem1
Production of Ultrasonics by Magnetostriction method When magnetic field is applied across the length of a ferromagnetic rod such as Nickel, then change in the length of rod is observed. This is called Magnetostriction. The charge in length is propotional to the...
by admin | Jun 3, 2015 | sem1
Production of Ultrasonics by Piezoelectric method For generating ultrasonic waves of high frequency (about 50 MHz) a generator using the piezoelectric effect is employed. It is found that when crystals of some materials such as quartz, tourmaline, rocksalt etc. are...
