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A transistor can be used as

Following are the ways in which transistor can be used as: Transistor as a switch Transistor as an amplifier Transistor as an oscillator... View Article

The collector of the transistor should be of:

The doping level of the collector is moderate, and its size is the largest of the three regions.... View Article

Choose the right answer from the following

If A = 1 and B = 0, what is the value of A.A+B? 0 A2 A B Answer: 3.A Explanation: We know that A = 1 and B = 0, Substituting the... View Article

An oscillator is nothing but an amplifier with:

An oscillator is an electronic circuit, which generates alternating voltage. In an oscillator the output power is returned back to the input, in... View Article

Which of the following is not an ac parameter of a transistor?

Input resistance, Output resistance and Current amplification factor are ac parameters of a transistor.... View Article

Newtonian reflecting type telescope uses

Newtonian reflecting type telescope uses Concave mirror.... View Article

Transistor cannot be used as a :

Diodes can be used as rectifiers while transistors can be used as amplifiers,oscillators and a switch.... View Article

Transistors are useful in equipments such as hearing aids and small radio receivers because transistors :

Transistors are useful in equipments such as hearing aids and small radio receivers because transistors do not distort sound.... View Article

Zener diodes are used as

Zener diodes are used as voltage regulators. When a Zener diode is used as a voltage regulator, it used for regulating or controlling. It is... View Article

In mirrors how can we differentiate real image from the virtual image

In mirrors, we differentiate the real image from the virtual image as the real image is always inverted, whereas the virtual image is erect.... View Article

A myopic person can see things clearly if they lie between 8 cm and 100 cm from his eye. The lens will enable him to see the moon distinctly if its focal length is:

The final image of the moon should be formed at a distance of 100 cm. Using a concave lens of focal length 100 cm will enable him to see the... View Article

The earth takes 24 h to rotate once about its axis. How much time does the sun take to shift by 1º when viewed from the earth?

We know the earth takes 24 hours to complete one rotation around its axis and 365 days to complete one revolution around the sun. By the time the... View Article

A 50 Hz a.c. is rectified with full wave rectifier, what is the output frequency?

A full-wave rectifier rectifies both the half cycles of the AC input i.e., it conducts twice during a cycle.Output frequency is double to that of... View Article

The diode that is specially designed to work only in reverse breakdown region is

Zener diode is specially designed to work only in reverse breakdown region.... View Article

The current that exists in the circuit of a photodiode even when no visible light is made incident on it is called

The current that exists in the circuit of a photodiode even when no visible light is made incident on it is called dark current.... View Article

A current loop of area 0.01m2 and carrying a current of 100 A is held parallel to a magnetic field of intensity 0.1 tesla. The torque in Nm acting on the loop is:

Since magnetic field is parallel to the area vector, torque acting will be zero.... View Article

A transistor in a common Emitter configuration is used as a switch, and it is in the ON position. The output voltage Vo is :

When the transistor is in saturation region with switch in ON position , IC is very large and VO is almost zero.... View Article

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