When arsenic is added as an impurity to silicon, the resulting material is
n-type semiconductor
p-type semiconductor
n-type conductor
insulator
Radiowaves of constant amplitude can be generated with
FET
filter
rectifier
oscillator
Which one of the following is the weakest kind of the bonding in solids?
Ionic
Metallic
Van der Waals'
Covalent
The correct relationship between the two current gains and in a transistor is
The transfer ratio β of a transistor is 50. The input resistance of the transistor when used in the common emitter configuration is 1kΩ. The peak value of the collector AC current for an AC input voltage of 0.01V peak is
100 μA
0.01 mA
0.25 mA
500 μA
NAND
OR
AND
XOR
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
When a triode is used as an amplifier the phase difference between the input signal voltage and the output is
zero
Sodium has body centred packing. If the distance between two nearest atoms is 3.7 Å, then the lattice parameter is
3.3 Å
3.9 Å
4.3 Å
4.8 Å
