2025 Exam Questions
Q. The gate which produces high output, when its both inputs are high is –
(A) X-OR gate
(B) AND gate
(C) NAND gate
(D) NOR gate
Q. State any four advantages of light emitting diode (LED).
Q. Draw a neat and labelled circuit diagram for a full wave rectifier.
2024 Exam Questions
Q. What is a Light Emitting Diode? Draw its circuit symbol.
Q. Define the current gain αDC and βDC for a transistor. Obtain the reltion between them.
2023 Exam Questions
Q. Y=\overline{A+B} is the Boolean expression for ____.
(A) OR-gate
(B) AND-gate
(C) NOR-gate
(D) NAND-gate
Q. The LED emits visible light when its____.
(A) junction is reverse biased
(B) depletion region widens
(C) holes and electrons recombine
(D) junction becomes hot
Q. Explain the working of n-p-n transistor in common base configuration.
2022 Exam Questions
Q. What is rectifier? With the help of a neat circuit diagram, explain the working of a half wave rectifier.
Q. Define \alpha_{dc} and \beta_{dc}. Obtain the relation between them.
Q. Write the Boolean expression for Exclusive-OR (X-OR) gate.
