Semiconductor Electronics: Materials, Devices and

A zener diode of power rating 2W is to be used as a voltage regulator. If the zener diode ha s breakdown of 40V and its has to regulate voltage fluctuated between 6 V and 14 V, the value of R_s for safe operation should be_______   $\Omega .$

The voltage drop across   $15\Omega$  resistance in the given figure will be_______V.

For a transistor a and b are given as $\alpha =\frac{I_C}{I_E}and\beta =\frac{I_C}{I_B}.$  Then the correct relation between a and b will be:

For a transistor in CE mode to be used as an amplifier, it must be operated in:

For the given circuit, the power across zener diode is________mW.

Statement-I: By doping silicon semiconductor with pentavalent material, the electrons density increases.

Statement-II: The n-type semiconductor has net negative charge.

In the light of the above statements, choose the most appropriate answer from the options given below:

Identify the logic operation carried out by the given circuit:-

Four NOR gates are connected as shown in figure. The truth table for the given figure is:

The photodiode is used to detect the optical signals. These diodes are preferably operated in reverse biased mode because:

A logic gate circuit has two inputs A and B and output Y. The voltage waveforms of A, B and Y are shown below. The logic gate circuit is: