1
AIEEE 2009
MCQ (Single Correct Answer)
+4
-1
The projections of a vector on the three coordinate axis are $$6,-3,2$$ respectively. The direction cosines of the vector are :
A
$${6 \over 5},{{ - 3} \over 5},{2 \over 5}$$
B
$${6 \over 7 },{{ - 3} \over 7},{2 \over 7}$$
C
$${- 6 \over 7 },{{ - 3} \over 7},{2 \over 7}$$
D
$$6, -3, 2$$
2
AIEEE 2009
MCQ (Single Correct Answer)
+4
-1
If $A, B$ and $C$ are three sets such that $A \cap B=A \cap C$ and $A \cup B=A \cup C$, then :
A
$A=C$
B
$B=C$
C
$A \cap B=\phi$
D
$A=B$
3
AIEEE 2009
MCQ (Single Correct Answer)
+4
-1
The logic circuit shown below has the input waveforms $$'A'$$ and $$'B'$$ as shown. Pick out the correct output waveform. AIEEE 2009 Physics - Semiconductor Question 195 English 1 AIEEE 2009 Physics - Semiconductor Question 195 English 2

Output is

A
AIEEE 2009 Physics - Semiconductor Question 195 English Option 1
B
AIEEE 2009 Physics - Semiconductor Question 195 English Option 2
C
AIEEE 2009 Physics - Semiconductor Question 195 English Option 3
D
AIEEE 2009 Physics - Semiconductor Question 195 English Option 4
4
AIEEE 2009
MCQ (Single Correct Answer)
+4
-1
A $$p$$-$$n$$ junction $$(D)$$ shown in the figure can act as a rectifier. An alternating current source $$(V)$$ is connected in the circuit. AIEEE 2009 Physics - Semiconductor Question 194 English

The current $$(I)$$ in the resistor $$(R)$$ can be shown by :

A
AIEEE 2009 Physics - Semiconductor Question 194 English Option 1
B
AIEEE 2009 Physics - Semiconductor Question 194 English Option 2
C
AIEEE 2009 Physics - Semiconductor Question 194 English Option 3
D
AIEEE 2009 Physics - Semiconductor Question 194 English Option 4
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