Semiconductor Devices and Logic Gates · Physics · COMEDK

The conductivity of a semiconductor increases with increase in temperature because A) number density of free current carriers increases B) relaxation ...

The output of the given circuit is A. Negatively rectified half wave B. Positively rectified half wave C. Negatively rectified full wave D. Zero all ...

The following are the graphs of potential barrier versus width of the depletion region for a p-n junction diode. Which of the following is correct? ...

In a given semiconductor, the ratio of the number density of electron to number density of hole is $$2: 1$$. If $$\frac{1}{7}$$th of the total current...

An ideal diode is connected in series with a capacitor. The free ends of the capacitor and the diode are connected across a $$220 \mathrm{~V}$$ ac sou...

Though $$\mathrm{Sn}$$ and $$\mathrm{Si}$$ are $$4^{\text {th }}$$ group elements, $$\mathrm{Sn}$$ is a metal while $$\mathrm{Si}$$ is a semiconductor...

A transistor is connected in CE configuration. The collector supply is $$10 \mathrm{~V}$$ and the voltage drop across a resistor of $$1000 \Omega$$ in...

Which logic gate is represented by the following combination logic gates? ...

An LED is constructed from a $$p$$-$$n$$ junction diode using GaAsP. The energy gap is $$1.9 \mathrm{~eV}$$. The wavelength of the light emitted will ...

The energy gap between valance band and the conduction band for a given material is $$6 \mathrm{~eV}$$, then the material is :

In the given circuit the diode $$D_1$$ and $$D_2$$ have the forward resistance $$25 \Omega$$ and infinite backward resistance. When they are connected...

The reverse current in the semiconductor diode changes from $$20 \mu \mathrm{A}$$ to $$40 \mu \mathrm{A}$$ when the reverse potential is changed from ...

For CE transistor amplifier, the audio signal voltage across the collector resistance of 4 k$$\Omega$$ is 5 V. If the current amplification factor of ...

Which of the following gate give the similar output as the output of circuit diagram shown in the figure? ...

Choose the incorrect statements.

Find the logic gate, when both the inputs are high but the output is low and vice-versa.

What is the minimum band-gap of the LED diode?

When a $$p$$-$$n$$ junction diode is connected in forward bias, its barrier potential