Semiconductor Questions

In a n-type semiconductor, which of the following statement is true:

The electrical conductivity of a semiconductor increases when electromagnetic radiation of wavelength shorter than $2480 \text{ nm}$ is incident on it. The band gap (in eV) for the semiconductor is:

The barrier potential of a p-n junction depends on : a. Type of semiconductor material b. Amount of doping c. Temperature Which one of the following is correct?...

n-type semiconductors will be obtained,when germanium is doped with :-

In a p-n junction the depletion layer of thickness 10−6 m has potential across it is 0.1 V. The electric field is (V/m) :-

If in a p-n junction, a square input signal of 10 V is applied as shown, then the output across RL will be :...

In a common emitter transistor amplifier the audio signal voltage across the collector is 3V. The resistance of collector is 3 kΩ. If current gain is 100 and the base resistance is 2 kΩ, the voltage...

Which one of the following represents forward bias diode ?

A npn transistor is connected in common emitter configuration in a given amplifier. A load resistance of800 Ω is connected in the collector circuit and the voltage drop across it is 0.8 V. If the...

In a p-n junction diode, change in temperature due to heating :-

In a common emitter (CE) amplifier having a volagegain G, the transistor used has transconductance0.03 mho and current gain 25. If the abovetransistor is replaced with another one withtransconductance...

The given graph represents V - I characteristic for a semiconductor device. Which of the following statement is correct?...

In a common emitter amplifier circuit using an n-p-n transistor, the phase difference between the input and the output voltages will be

For the given circuit (shown in part ) the time dependent input voltage $v_{\text{in}\text{~}}(t)$ and corresponding output $v_{o}(t)$ are shown in part (B) and part (C), respectively.Identify the com...

Truth table for system of four NAND gates asshown in figure is :-

To get an output Y = 1 in given circuit which of the following input will be correct:

Two ideal diodes are connected to a battery as shown in the circuit. Thecurrent supplied by the battery is...

The figure shows a logic circuit with two inputs A and B and the output C. The voltage wave formsacross A, B and C are as given. The logic circuit gate is...

C and Si both have same lattice structure, having 4 bonding electrons in each. However, C is insulatorwhere as Si is intrinsic semiconductor. This is because

Pure Si at 500 K has equal number of electron (ne)and hole (nh) concentration of 1.5 × 1016 m-3. Doping by indium increases nh to 4.5 × 1022 m-3. The doped semiconductor is of...