HARD

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Draw the diagram for transistor being used as a switch.

Important Questions on Semiconductor Electronics: Materials, Devices and Simple Circuits

EASY

Physics>Electronics>Semiconductor Electronics: Materials, Devices and Simple Circuits>Junction Transistor

For a transistor,

α_{d c}

and

β_{d c}

are the current ratios, then the value of

\frac{β_{d c} - α_{d c}}{α_{d c} \cdot β_{d c}}

MEDIUM

Physics>Electronics>Semiconductor Electronics: Materials, Devices and Simple Circuits>Junction Transistor

In a common emitter configuration with suitable bias, it is given that

R_{L}

is the load resistance and

R_{B E}

is small-signal dynamic resistance (input side). Then, voltage gain, current gain and power gain are given, respectively, by:

β

is current gain,

I_{B}

I_{C}

and

I_{E}

are respectively base, collector, and emitter currents.

EASY

Physics>Electronics>Semiconductor Electronics: Materials, Devices and Simple Circuits>Junction Transistor

In a common emitter amplifier circuit using an

n - p - n

transistor, the phase difference between the input and the output voltages will be:

EASY

Physics>Electronics>Semiconductor Electronics: Materials, Devices and Simple Circuits>Junction Transistor

An unknown transistor needs to be identified as a

n p n

p n p

type. A multimeter, with +ve and -ve terminals, is used to measure resistance between different terminals of transistor. If terminal 2 is the base of the transistor then which of the following is correct for a

p n p

transistor?

EASY

Physics>Electronics>Semiconductor Electronics: Materials, Devices and Simple Circuits>Junction Transistor

Transfer characteristics [output voltage

(V_{0})

vs input voltage

(V_{i})

] for a base biased transistor in CE configuration is as shown in the figure. For using transistor as a switch, it is used

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EASY

Physics>Electronics>Semiconductor Electronics: Materials, Devices and Simple Circuits>Junction Transistor

In a common-emitter transistor amplifier, the audio signal voltage across the collector is

3 V.

The resistance of collector is

3 kΩ

. If current gain is

100

and the base resistance is

2 kΩ

, the voltage and power gain of the amplifier is

MEDIUM

Physics>Electronics>Semiconductor Electronics: Materials, Devices and Simple Circuits>Junction Transistor

In the figure, given that $V_{B B}$ supply can vary from $0$ to $5.0 V, V_{C C} = 5 V, β_{d c} = 200,$ $R_{B} = 100 kΩ,$ $R_{C} = 1 kΩ$ and $V_{B E} = 1.0 V.$ The minimum base current and the input voltage at which the transistor will go to saturation, will be, respectively:

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MEDIUM

Physics>Electronics>Semiconductor Electronics: Materials, Devices and Simple Circuits>Junction Transistor

The transfer characteristic curve of a transistor, having input and output resistance $100 Ω$ and $100 k Ω$ respectively, is shown in the figure. The voltage and power gain, are respectively:
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