Lecturer in Electronics Mock Test #1| Industries Extension Officer Mock Test #1

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#1. A LED is basically a ———- PN Junction

Forward Biased

Forward Biased

Reverse Biased

Reverse Biased

Lightly Doped

Lightly Doped

Heavily Doped

Heavily Doped

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#2. Transistor is a ……………………………

Current Controlled Current Device

Current Controlled Current Device

Current Controlled voltage device

Current Controlled voltage device

Voltage Controlled current device

Voltage Controlled current device

Voltage Controlled voltage device

Voltage Controlled voltage device

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#3. The resistance of a reverse biased ideal diode is…

zero

zero

Negative

Negative

low

low

Infinity

Infinity

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#4. Which responds to both positive and negative voltages at the anode?

Triac

Triac

Diac

Diac

UJT

UJT

FET

FET

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#5. Which region of a transistor is lightly doped?

base

base

Emitter

Emitter

Collector

Collector

All regions equally doped

All regions equally doped

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#6. BJT widely used in the following mode for amplification applications

CE

CE

CC

CC

CB

CB

All three

All three

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#7. An LED is made up of a junction

PNP

PNP

NPN

NPN

PIN

PIN

PN

PN

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#8. The no of electrons in the outer most orbit of semiconductors

1

1

7

7

4

4

2

2

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#9. The Barrier potential of Germanium PN Junction is

0.1 V

0.1 V

0.3 V

0.3 V

0.5 V

0.5 V

0.7 V

0.7 V

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#10. A three terminal five layer bidirectional device

SCR

SCR

DIAC

DIAC

TRIAC

TRIAC

SCS

SCS

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