1
AP EAPCET 2025 - 22nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

When three NAND logic gates are connected as shown in the figure, then the logic gate equivalent to the circuit is

AP EAPCET 2025 - 22nd May Evening Shift Physics - Semiconductor Devices and Logic Gates Question 13 English
A

NOT

B

AND

C

$O R$

D

NOR

2
AP EAPCET 2025 - 22nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The device used for voltage regulation is

A

Zener diode

B

photo diode

C

light emitting diode

D

solar cell

3
AP EAPCET 2025 - 22nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0
A transistor has 3 impurity regions of different doping levels. In the order of increasing doping level, the regions are
A

emitter, base, collector

B

collector, base, emitter

C

base, emitter, collector

D

base, collector, emitter

4
AP EAPCET 2025 - 21st May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A transistor works as an amplifier when

A

emitter-base junction is forward biased and base-collector junction is reverse biased.

B

both emitter-base and base-collector junctions are forward biased.

C

both emitter-base and base-collector junctions are reverse biased.

D

emitter-base junction is reverse biased and base-collector junction is forward biased.

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