AIPMT 2011 Prelims | Semiconductor Electronics Question 66 | Physics

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AIPMT 2011 Prelims

MCQ (Single Correct Answer)

-1

Symbolic representation of four logic gates are shown as

AIPMT 2011 Prelims Physics - Semiconductor Electronics Question 82 English

Pick out which ones are for AND, NAND and NOT gates, respectively

(ii), (iii) and (iv)

(iii), (ii) and (i)

(iii), (ii) and (iv)

(ii), (iv) and (iii)

AIPMT 2011 Prelims

MCQ (Single Correct Answer)

-1

Out of Syllabus

A transistor is operated in common emitter configuration at V_C = 2 V such that a change in the base current from 100 $$\mu $$A to 300 $$\mu $$A produces a change in the collector current from 10 mA to 20 mA. The current gain is

100

AIPMT 2011 Prelims

MCQ (Single Correct Answer)

-1

If a small amount of antimony is added to germanium crystal

it becomes a p-type semiconductor

the antimony becomes an acceptor atom

there will be more free electrons than holes in the semiconductor

its resistance is increased

AIPMT 2010 Mains

MCQ (Single Correct Answer)

-1

The following figure shows a logic gate circuit with two inputs A and B and the output Y. The voltage waveforms of A, B and Y are as given.

AIPMT 2010 Mains Physics - Semiconductor Electronics Question 73 English

The logic gate is

NOR gate

OR gate

AND gate

NAND gate

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