Define intrinsic stand-off ratio of a UJT. Draw and explain the I-V characteristic of UJT.
See Answer →What are the causes of non-ideal characteristics of a p-n junction diode?
See Answer →Describe the difference between the construction and operation of enhancement mode and depletion mode MOSFET.
See Answer →Electrons are accelerated through a potential 150 V and incident on a crystal with interatomic spacing . Calculate the de Broglie wavelength and the first-order Bragg diffraction angle.
How can the efficiency of a solar cell be increased? How is the optimum bandgap chosen for the solar cell material?
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Explain the complete switching ON and OFF cycle of a power diode with the help of appropriate diagram. What are forward and reverse recovery times of a power diode?
See Answer →Skin depth in conductors and its physical significance.
See Answer →Dispersion of electromagnetic waves in a medium.
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A rigid body consisting of a uniform plate with and mass M, obtain the moments of inertia (Ixx, Iyy, Izz) and hence the principal moments of inertia.
Obtain the expression for the rotational kinetic energy of a rigid body when the rotation is referred to its principal axes of inertia, for a spherical top (a uniform solid sphere).
See Answer →A particle with charge moves with velocity
perpendicular to a uniform magnetic field of magnitude
. Calculate the magnetic force acting on the particle.
Derive the expression for total energy for a heavy symmetric top.
See Answer →Determine the radial and the angular frequencies and explain their significance.
See Answer →Explain the Lorentz transformation between two inertial frames. Obtain the transformation laws for the electric and magnetic fields.
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Obtain the radial action and the angular action variables. Hence, express the total action.
See Answer →A particle of mass m moves under a potential . The total energy of the system is
where l is the angular momentum.
See Answer →A simple pendulum with a bob of mass m and a string of length l0 with Hamiltonian
Construct Hamilton-Jacobi equation and obtain the characteristic function in integral form. Write the new coordinates P, Q.
See Answer →The Hamiltonian of a system with two degrees of freedom is given as:
Determine the new Hamiltonian K.
The Hamiltonian of a system with two degrees of freedom is given as:
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