Semiconductor Device | MCQs

Explanation

A transistor is a semiconductor component that can be used either as a switch or an amplifier.

It controls the flow of electrical current in a circuit and is fundamental in electronic devices.

Explanation

 In a p-n-p transistor, the collector current is slightly less than the emitter current.

This is because a small portion of the current flowing from the emitter to the base recombines with electrons in the base region, reducing the current that reaches the collector. 

Explanation

Light emitting diode is a 2 lead semiconductor device . 

Explanation

In a reverse-biased PN junction, the reverse current is typically very small, usually in the range of microamperes (μA).

This current is primarily due to minority charge carriers.

Explanation

A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power.

Transistors are one of the basic building blocks of modern electronics.

Explanation

• A Unijunction Transistor (UJT) has one junction.
• It is commonly used in triggering circuits for thyristors and other semiconductor devices.

Explanation

The transistor is a semiconductor device with at least three terminals.

These terminals are typically referred to as the :

• Emitter
• Base
• Collector

They allow the transistor to control the flow of electrical signals and power. 

Explanation

A semiconductor has electrical properties between a conductor and an insulator.

It conducts electricity under certain conditions, making it essential in electronic devices.

Explanation

A diode is a semiconductor device that allows current to flow in one direction only.

It effectively acting as a one-way valve for electrical current.

This property makes it useful in various electronic circuits for controlling the direction of current flow.

Explanation

The (reverse) saturation current of a p-n junction diode is the current caused by the diffusion of minority carriers

From the n-type/p-type regions (quasi-neutral regions) to the depletion region