Zener diode is used for
producing oscillations in an oscillator
amplification
voltage stabilisation
rectification
The correct relationship between the two current gains and in a transistor is
In the following circuit, the output Y for all possible inputs A and B is expressed by the truth table
A B Y
0 0 0
0 1 0
1 0 0
1 1 1
0 0 1
0 1 1
1 0 1
1 1 0
Which of the following when added as an impurity into silicon produces n-type semiconductor?
P
Al
B
Mg
If internal resistance of cell is negligible, then current flowing through the circuit is
In bcc structure of lattice constant a, the minimum distance between atoms 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 :
At absolute zero, Si acts as
non-metal
metal
insulator
None of these
When n-type semiconductor is heated
number of electrons increases while that of holes decreases
number of holes increases while that of electrons decreases
number of electrons and holes remain same
number of electrons and holes increases equally
