Semiconductor

\(\text { The output } Y \text { for the given inputs } A \text { and } B \text { to the circuit is : }\)

The maximum rated power of the LED is 2 mW and it is used in the circuit with input voltage of 5 V as shown in the figure below. The current through resistance $R_S$ is 0.5 mA .
The minimum value of the resistance of $R_S$, to ensure that t...

Refer to the logic circuit given below. For two inputs ( $A=1, B=1$ ) and ( $A=0, B=1$ ), output ( Y ) will be $\_\_\_\_$ .

For the given logic circuit, which of the following inputs combination will make both LED-1 and LED-2 to glow?

In a semiconductor $p$-n diode, the doping concentrations on $p$-side and $n$-side are $10^{15}$ atoms $/ \mathrm{cm}^3$ and $10^{18}$ atoms $/ \mathrm{cm}^3$, respectively. Which one of the following statements is true?

Two 4 bits binary numbers, $A=1101$ and $B=1010$ are given in the inputs of a logic circuit shown in figure below. The output $(Y)$ will be :

Consider a circuit consisting of a capacitor $(20 \mu \mathrm{~F})$, resistor $(100 \Omega)$ and two identical diodes as shown in figure. The resistance of diode under forward biasing condition is $10 \Omega$. The time constant of the circu...

A diode has Zener voltage of 10 V and maximum power dissipation of 0.5 W , then the minimum resistance to be used in series with this diode for safety when it is connected to a 25 V power supply is $\_\_\_\_$ $\Omega$.

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason $\mathbf{R}$
Assertion A : A diode under reverse-biased condition provides very small current which is nearly independent of voltage until a ...

For the given circuit (shown in part (A)) the time dependent input voltage $v_{in}(t)$ and corresponding output $v_{o}(t)$ are shown in part (B) and part (C), respectively. Identify the components that are used in the circuit between points...

If X and Y are the inputs, the given circuit works as _________.

Assuming in forward bias condition there is a voltage drop of 0.7 V across a silicon diode, the current through diode $D_1$ in the circuit is $\_\_\_\_$ mA .
(Assume all diodes in the given circuit are identical)

Two p-n junction diodes $D_1$ and $D_2$ are connected as shown in figure. $A$ and $B$ are input signals and $C$ is the output. The given circuit will function as a ________.

A voltage regulating circuit consisting of Zener diode, having break-down voltage of 10 V and maximum power dissipation of 0.4 W , is operated at 15 V . The approximate value of protective resistance in this circuit is $\_\_\_\_$ $\Omega$.

\(\text { Identify the correct truth table of the given logic circuit. }\)

The following diagram shows a Zener diode as a voltage regulator. The Zener diode is rated at $V_z=5 \mathrm{~V}$ and the desired current in load is 5 mA . The unregulated voltage source can supply upto 25 V . Considering the Zener diode ca...

\(\text { For the given logic gate circuit, which of the following is the correct truth table? }\)

Find the correct combination of $\mathrm{A}, \mathrm{B}, \mathrm{C}$ and D inputs which can cause the LED to glow.

The correct truth table for the given input data of the following logic gate is :

\(\text { The given circuit works as : }\)

The charge stored by the capacitor C in the given circuit in the steady state is __________ µC.

The output voltage in the following circuit is (Consider ideal diode case)

In the following circuit, the reading of the ammeter will be
$($ Take Zener breakdown voltage $=4 \mathrm{~V})$

Consider the following logic circuit.

The output is Y = 0 when :

The Boolean expression $\mathrm{Y}=A \bar{B} C+\bar{A} \bar{C}$ can be realised with which of the following gate configurations.
A. One 3-input AND gate, 3 NOT gates and one 2-input OR gate, One 2-input AND gate,
B. One 3 -input AND gate, 1...

Consider a n-type semiconductor in which $\mathrm{n}_{\mathrm{e}}$ and $\mathrm{n}_{\mathrm{h}}$ are number of electrons and holes, respectively.
(A) Holes are minority carriers
(B) The dopant is a pentavalent atom
(C) $\mathrm{n}_{\mathrm{...

\(\text { Choose the correct logic circuit for the given truth table having inputs } A \text { and } B \text {. }\)

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\(\text {The truth table corresponding to the circuit given below is: }\)

A zener diode with 5 V zener voltage is used to regulate an unregulated dc voltage input of 25 V . For a $400 \Omega$ resistor connected in series, the zener current is found to be 4 times load current. The load current $\left(I_L\right)$ a...

\(\text { In the digital circuit shown in the figure, for the given inputs the } P \text { and } Q \text { values are : }\)

For the circuit shown above, equivalent GATE is :

The truth table for the circuit given below is:

Which of the following circuits has the same output as that of the given circuit?

Consider the following statements :
A. The junction area of solar cell is made very narrow compared to a photo diode.
B. Solar cells are not connected with any external bias.
C. LED is made of lightly doped p-n junction.
D. Increase of forw...

The output of the circuit is low (zero) for :

(A) $X=0, Y=0$
(B) $X=0, Y=1$
(C) $X=1, Y=0$
(D) $X=1, Y=1$
Choose the correct answer from the options given below :

Refer to the circuit diagram given in the figure. which of the following observations are correct?
A. Total resistance of circuit is $6 \Omega$
B. Current in Ammeter is 1 A
C. Potential across $A B$ is 4 Volts.
D. Potential across CD is 4 V...

What is the current through the battery in the circuit shown below?

Which of the following circuits represents a forward biased diode?

Choose the correct answer from the options given below:

To obtain the given truth table, following logic gate should be placed at G :

A light emitting diode (LED) is fabricated using GaAs semiconducting material whose band gap is \(1.42 \mathrm{~eV}\). The wavelength of light emitted from the LED is :

In the truth table of the above circuit the value of X and Y are :

The \(I\)-\(V\) characteristics of an electronic device shown in the figure. The device is :

The output \(\mathrm{Y}\) of following circuit for given inputs is :

A potential divider circuit is connected with a dc source of \(20 \mathrm{~V}\), a light emitting diode of glow in voltage \(1.8 \mathrm{~V}\) and a zener diode of breakdown voltage of \(3.2 \mathrm{~V}\). The length (PR) of the resistive w...

The correct truth table for the following logic circuit is :

The acceptor level of a p-type semiconductor is \(6 \mathrm{~eV}\). The maximum wavelength of light which can create a hole would be : Given \(\mathrm{hc}=1242 \mathrm{~eV} \mathrm{~nm}\).

Following gates section is connected in a complete suitable circuit.

For which of the following combination, bulb will glow (ON) :

The output (Y) of logic circuit given below is 0 only when :

The value of net resistance of the network as shown in the given figure is :

Identify the logic gate given in the circuit :