JEE Mains JEE Advance BITSAT
JEE Mains | PYQ

Year

All years 2026 2025 2024 2023 2022 2021

The truth table corresponding to the circuit given below is:

A zener diode with \( 5 \, \text{V} \) zener voltage is used to regulate an unregulated dc voltage input of \( 25 \, \text{V} \). For a \( 400 \, \Omega \) resistor connected in series, the zener current is found to be \( 4 \) times load current. The load current \( (I_{L}) \) and load resistance \( (R_{L}) \) are:

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

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

The Boolean expression $Y = {A}\bar{B}{C} + \bar{A}\bar{C}$ can be realized 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 NOT gate, One 2-input NOR gate and one 2-input OR gate

C. 3-input OR gate, 3 NOT gates and one 2-input AND gate

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 \( 1 \, \text{A} \).
C. Potential across AB is \( 4 \) Volts.
D. Potential across CD is \( 4 \) Volts.
E. Total resistance of the circuit is \( 8 \, \Omega \).
Choose the correct answer from the options given below:

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

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:

In the circuit shown here, assuming threshold voltage of diode is negligibly small, then voltage \( V_{AB} \) is correctly represented by:

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

Consider a \( n \)-type semiconductor in which \( n_{e} \) and \( n_{h} \) are number of electrons and holes, respectively.
(A) Holes are minority carriers
(B) The dopant is a pentavalent atom
(C) \( n_{e} n_{h} \neq n_{i}^{2} \)
(where \( n_{i} \) is number of electrons or holes in semiconductor when it is intrinsic form)
(D) \( n_{e} n_{h} \ge n_{i}^{2} \)
(E) The holes are not generated due to the donors
Choose the correct answer from the options given below:

The truth table for the circuit given below is:

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

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

Which of the following circuits represents a forward biases diode?

Choose the correct answer from the options given below:

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

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 forward current results in continuous increase of LED light intensity.
(E) LEDs have to be connected in forward bias for emission of light.
Choose the correct answer from the options given below:

For the circuit shown above, equivalent GATE is:

← PreviousQuestion 14 of 18Next →

JEE Main 2025 8TH April Evening Shift

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