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
The truth table given below
represents
AND gate
NOR gate
OR gate
NAND gate
In a p-n junction photo cell, the value of the photo-electromotive force produced by monochromatic light is proportional to
the barrier voltage at the p-n junction
the intensity of the light falling on the cell
the frequency of the light falling on the cell
the voltage applied at the p-n junction
Sodium has body centred packing. Distance between two nearest atoms is 3.7Å. The lattice parameter is
6.8Å
4.3Å
3.0Å
8.6Å
Barrier potential of a p-n junction diode does not depend on
forward bias
doping density
diode design
temperature
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
10V
The truth table belongs to which of the following gate?
NOR
XOR
NAND
OR
A p-n photodiode is made of a material with a band gap of 2.0eV. The minimum frequency of the radiation that can be absorbed by the material is nearly
10 × 1014 Hz
5 × 1014 Hz
1 × 1014 Hz
20 × 1014 Hz
The correct relationship between the two current gains and in a transistor is
The circuit is equivalent to
AND gates
