1
AIEEE 2008
MCQ (Single Correct Answer)
+4
-1
In the circuit below, $$A$$ and $$B$$ represent two inputs and $$C$$ represents the output. AIEEE 2008 Physics - Semiconductor Question 177 English

The circuit represents

A
NOR gate
B
AND gate
C
NAND gate
D
OR gate
2
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
Carbon, silicon and germanium have four valence electrons each. At room temperature which one of the following statements is most appropriate ?
A
The number of free electrons for conduction is significant only in $$Si$$ and $$Ge$$ but small in $$C.$$
B
The number of free conduction electrons is significant in $$C$$ but small in $$Si$$ and $$Ge.$$
C
The number of free conduction electrons is negligibly small in all the three.
D
The number of free electrons for conduction is significant in all the three
3
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
If in a $$p$$-$$n$$ junction diode, a square input signal of $$10$$ $$V$$ is applied as shown AIEEE 2007 Physics - Semiconductor Question 178 English

Then the output signal across $${R_L}$$ will be

A
AIEEE 2007 Physics - Semiconductor Question 178 English Option 1
B
AIEEE 2007 Physics - Semiconductor Question 178 English Option 2
C
AIEEE 2007 Physics - Semiconductor Question 178 English Option 3
D
AIEEE 2007 Physics - Semiconductor Question 178 English Option 4
4
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
In a common base mode of a transistor, the collector current is $$5.488$$ $$mA$$ for an emitter current of $$5.60mA.$$ The value of the base current amplification factor $$\left( \beta \right)$$ will be
A
$$49$$
B
$$50$$
C
$$51$$
D
$$48$$
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