The correct relationship between the two current gains and in a transistor is
In bcc structure of lattice constant a, the minimum distance between atoms is :
To obtain a p-type germanium semiconductor, it must be doped with
phosphorus
indium
antimony
arsenic
n-type semiconductor
p-type semiconductor
n-type conductor
insulator
The truth table given below represents which logic gate ?
AND gate
NOR gate
OR gate
NAND gate
The number of atoms per unit cell in bcc lattice is :
1
2
4
9
Dimond is very hard because
it is covalent solid
it has large cohesive energy
high melting point
insoluble in all solvants
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
Which one of the following is the weakest kind of the bonding in solids?
Ionic
Metallic
Van der Waals'
Covalent
If the lattice parameter for a crystalline structure is 3.6Å, then the atomic radius in fcc crystals is:
1.81Å
2.10Å
2.92Å
1.27Å
