AIPMT 2005 | Semiconductor Electronics Question 95 | Physics

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AIPMT 2005

MCQ (Single Correct Answer)

-1

Choose the only false statement from the following.

In conductors the valence and conduction bands overlap.

Substances with energy gap of the order of 10 eV are insulators.

The resistivity of a semiconductor increases with increase in temperature.

The conductivity of a semiconductor increases with increase in temperature.

AIPMT 2004

MCQ (Single Correct Answer)

-1

Of the diodes shown in the following diagrams, which one is reverse biased ?

AIPMT 2004 Physics - Semiconductor Electronics Question 50 English Option 1

AIPMT 2004 Physics - Semiconductor Electronics Question 50 English Option 2

AIPMT 2004

MCQ (Single Correct Answer)

-1

The output of OR gate is 1

if both inputs are zero

if either or both inputs are 1

only if both inputs are 1

if either inputs is zero

AIPMT 2004

MCQ (Single Correct Answer)

-1

The peak voltage in the output of a half wave diode rectifier fed with a sinusoidal signal without filter is 10 V. The d.c. component of the output voltage is

(10/$$\sqrt 2 $$) V

$$\left( {{{10} \over \pi }} \right)V$$

10 V

(20/$$\pi $$) V

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