AIPMT 2011 Prelims | Semiconductor Electronics Question 64 | Physics

AIPMT 2011 Prelims

MCQ (Single Correct Answer)

-1

Symbolic representation of four logic gates are shown as

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

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 2011 Prelims

MCQ (Single Correct Answer)

-1

In forward biasing of the p-n junction

the positive terminal of the battery is connected to p-side and the depletion region becomes thick.

the positive terminal of the battery is connected to n-side and the depletion region becomes thin.

the positive terminal of the battery is connected to n-side and the depletion region becomes thick.

the positive terminal of the battery is connected to p-side and the depletion region becomes thin.

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.

The logic gate is

NOR gate

OR gate

AND gate

NAND gate

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