If a full wave rectifier circuit is operating from 50Hz mains; the fundamental frequency in the ripple will be

In bcc structure of lattice constant a, the minimum distance between atoms is :

The peak voltage in the output of a half-wave diode rectifier fed with a sinusoidal signal without filter is 10V. The DC component of the output voltage is

To obtain a p-type germanium semiconductor, it must be doped with

Sodium has body centred packing. Distance between two nearest atoms is 3.7Å. Calculate the lattice parameter ?

The current gain for a transistor working as common base amplifier is 0.96. If the emitter current is 7.2 mA, then the base current is 

The number of atoms per unit cell in bcc lattice is :

If internal resistance of cell is negligible, then current flowing through the circuit is

A transistor-oscillator using a resonant circuit with an inductor L (of negligible resistance) and a capacitor C in series produce oscillations of frequency f. If L is doubled and C is changed to 4 C, the frequency will be :

Dimond is very hard because