MEDIUM

JEE Main/Advance

IMPORTANT

Earn 100

In the circuit shown, if each diode has a forward-biased resistance of $75 Ω$ , and infinite resistance in reverse bias, what will be the value of current $i_{1}$ (in $A$ )?

50% studentsanswered this correctly

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

MEDIUM

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 23 - Semiconductor Electronics: Materials, Devices and Simple Circuits>Assignment Set-2>Q 72

A transistor is used in common emitter mode in an amplifier circuit. When a signal of

20 mV

is added to the base-emitter voltage, the base current changes by

20 μA

and the collector current changes by

2 mA

. The load resistance is

5 kΩ

. The value of transconductance (in

Ω^{- 1}

) is

HARD

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 23 - Semiconductor Electronics: Materials, Devices and Simple Circuits>Assignment Set-2>Q 73

In an NPN transistor,

10^{10}

electrons enter the emitter region in

10^{- 6}

second.

2 %

of the electrons are lost in the base region. The current amplification factor (common emitter) is

MEDIUM

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 23 - Semiconductor Electronics: Materials, Devices and Simple Circuits>Assignment Set-2>Q 74

In an intrinsic semiconductor, the concentration of electron-hole pair is

10^{16} m^{- 3}

. Due to doping, electron concentration becomes

10^{22} m^{- 3}

. After doping, the hole concentration is

10^{n} m^{- 3}

. Value of

n

, is

MEDIUM

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 23 - Semiconductor Electronics: Materials, Devices and Simple Circuits>Assignment Set-2>Q 75

In the circuit, the current through Zener diode is $n mA$ . Value of $n$ , is (the breakdown voltage is $10 V$ )

Question Image

MEDIUM

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 23 - Semiconductor Electronics: Materials, Devices and Simple Circuits>Assignment Set-2>Q 76

A Zener diode of power rating $2 W$ is to be used as a voltage regulator. If Zener has a breakdown of $5 V$ and it is being fed with voltage fluctuating between $3 V$ and $7 V$ , what should be value of $R$ for self operation?

Question Image

HARD

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 23 - Semiconductor Electronics: Materials, Devices and Simple Circuits>Assignment Set-2>Q 77

In common base amplifier, the ratio of power gain and resistance gain is

α^{n}

, Value of

n

, is

HARD

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 23 - Semiconductor Electronics: Materials, Devices and Simple Circuits>Assignment Set-2>Q 78

In a

CE

configuration of a transistor, the voltage drop across a resistor of,

800 Ω

in the collector circuit is,

0.5 V

. If

α = 0.96

, the value of base current (in

µ A

) to a nearest integer will be (

α

has usual meaning)

MEDIUM

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 23 - Semiconductor Electronics: Materials, Devices and Simple Circuits>Assignment Set-2>Q 79

A transistor in $CE$ mode is given in the figure. If, $β = 100 &$ $i_{c} = 2 mA$ . The value of $V_{CE}$ (in $V$ ) (symbols have their usual meaning)

Question Image

In the circuit shown, if each diode has a forward-biased resistance of 75 Ω, and infinite resistance in reverse bias, what will be the value of current i1 (in A)?

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

Learn and Prepare for any exam you want !

In the circuit shown, if each diode has a forward-biased resistance of $75 Ω$ , and infinite resistance in reverse bias, what will be the value of current $i_{1}$ (in $A$ )?