In NPN transistor, if doping in base region is increased then collector current

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

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Achieve CUET (UG) Physics Practice Book>Chapter 14 - Semiconductor Electronics: Materials, Devices and Simple Circuits>Exercise>Q 118

With respect to the potential of emitter, base and collector, a $\text{NPN}$ transistor conducts when

 

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Achieve CUET (UG) Physics Practice Book>Chapter 14 - Semiconductor Electronics: Materials, Devices and Simple Circuits>Exercise>Q 119

The part of a transistor which is most heavily doped to produce large number of majority carriers is

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Achieve CUET (UG) Physics Practice Book>Chapter 14 - Semiconductor Electronics: Materials, Devices and Simple Circuits>Exercise>Q 120

A working transistor with its three legs marked P, Q and R is tested using a multimeter. No conduction is found between P and Q. By connecting the common (negative) terminal of the multimeter to R and the other (positive) terminal to P or Q, some resistance is seen on the multimeter. Which of the following is true for the transistor?

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Achieve CUET (UG) Physics Practice Book>Chapter 14 - Semiconductor Electronics: Materials, Devices and Simple Circuits>Exercise>Q 121

A change of 8.0 mA in the emitter current brings a change of 7.9 mA in the collector current. The value of $\alpha$ will be

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Achieve CUET (UG) Physics Practice Book>Chapter 14 - Semiconductor Electronics: Materials, Devices and Simple Circuits>Exercise>Q 122

 The emitter current ${\mathrm{I}}_{\mathrm{E}}$ in a transistor is $3\mathrm{mA}$. If the leakage current ${\mathrm{I}}_{\mathrm{C}}\mathrm{BO}$ is $5 \mathrm{\mu A}$ and $\mathrm{\alpha }=0.98$, calculate the collector and base current.

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Achieve CUET (UG) Physics Practice Book>Chapter 14 - Semiconductor Electronics: Materials, Devices and Simple Circuits>Exercise>Q 123

A transistor has an ${\mathrm{I}}_{\mathrm{C}}$ of $100 \mathrm{mA}$ and ${\mathrm{I}}_{\mathrm{B}}$ of $0.5 \mathrm{mA}$. What is the value of ${\mathrm{a}}_{\mathrm{dc}}$?

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Achieve CUET (UG) Physics Practice Book>Chapter 14 - Semiconductor Electronics: Materials, Devices and Simple Circuits>Exercise>Q 124

The AC current gain in a common base configuration is______.

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Achieve CUET (UG) Physics Practice Book>Chapter 14 - Semiconductor Electronics: Materials, Devices and Simple Circuits>Exercise>Q 125

A transistor has an ${\mathrm{I}}_{\mathrm{E}}$ of $0.9 \mathrm{mA}$ and implication factor of $0.98$. What will be the ${\mathrm{I}}_{\mathrm{C}}$?