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For functioning of a transistor its emitter-base junction has to be:

For functioning of a transistor its emitter-base junction has to be forward biased.... View Article

An n p n transistor is biased to work as an amplifier. Which of the following statements is not correct?

If an n-p-n transistor is biased to work as an amplifier,the electrons go from the emitter region to the base region and from the base region to... View Article

In case of a transistor, the central portion has to be :

In case of a transistor, the central portion may be N-type or P-type.... View Article

The phase difference between the input and output voltage of CE amplifier circuit is

The phase difference of 1800 between the signal voltage and output voltage in a common emitter amplifier is known as phase reversal.... View Article

Which of the following is the universal gate? (a) OR (b) NOT (c) AND (d) NAND

Option (d) NAND is the correct answer NAND gate and NOR gate are called the universal logic gates. The repeated use of a NOR or a NAND gate... View Article

Logic gate is a digital circuit with

Since Logic gate is a digital switching circuit, its output can have only one of the possible states i.e. either a high voltage or a low voltage-... View Article

According to Faraday’s law of electromagnetic induction

According to Faraday's law of electromagnetic induction, the magnitude of induced e.m.f. produced in a coil is directly proportional to the... View Article

What is the focal length of a plane mirror?

The focal length of the plane mirror is infinite. The reason why a plane mirror has an infinite focal length is that the plane mirror can be... View Article

For seeing the cricket match we prefer binocular over terrestrial telescope. Why?

Binocular is preferred for observing a cricket match and not a terrestrial telescope because binocular gives a proper three-dimensional view.... View Article

The nature of the base of the transistor must be:

The nature of the base of the transistor must be opposite to that of collector and emitter.... View Article

The emitter of the transistor should be of:

The emitter is heavily doped, and its job is to emit and inject electrons for NPN (or holes for PNP) into the base.... View Article

In an n-p-n transistor, the majority carriers in the emitter and collector are :

The majority carriers in the emitter and collector are free electrons in an n-p-n transistor... View Article

An image is upright and reduced in size. Which mirror is used to form such an image?

Only Convex Mirror can form an image which is upright and reduced in size.... View Article

The base of the transistor should be:

The base of the transistor should be narrow so that most of the charge carriers can easily diffuse through it.... View Article

In n-p-n transistor, the p-type crystal act as

In the n-p-n transistor, the p-type crystal act as a base. A transistor is defined as the device which is used for regulating either current... View Article

In an n-p-n transistor, the emitter current is

Ie = Ib + Ic... View Article

The transistor provide good power amplification when they are used in:

The transistor provides good power amplification when they are used in common emitter configuration.... View Article

In an n-p-n transistor symbol, the arrow on the emitter is shown:

In an n-p-n transistor symbol, the arrow on the emitter is shown away from the base.... View Article

In present circuits, a number of logic gates or circuits are integrated into a single circuit, known as

In present circuits, a number of logic gates or circuits are integrated into a single circuit, known as integrated circuits.... View Article

Splitting of light when it passes through prism is called as

Splitting of light when it passes through prism is called as dispersion.... View Article

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