To get an output Y= 1 in given circuit which of the following input will be correct ?
A
A $$ \to $$ 1, B $$ \to $$ 0, C $$ \to $$ 0
B
A $$ \to $$ 1, B $$ \to $$ 0, C $$ \to $$ 1
C
A $$ \to $$ 1, B $$ \to $$ 1, C $$ \to $$ 0
D
A $$ \to $$ 0, B $$ \to $$ 1, C $$ \to $$ 0
2
AIPMT 2012 Prelims
MCQ (Single Correct Answer)
+4
-1
Two ideal diodes are connected to a battery as shown in the circuit. The current supplied by the battery is
A
0.75 A
B
zero
C
0.25 A
D
0.5 A
3
AIPMT 2012 Prelims
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
In a CE transistor amplifier, the audio signal voltage across the collector resistance of 2 k$$\Omega $$ is 2 V. If the base resistance is 1 k$$\Omega $$ and the current amplification of the transistor is 100, the input signal voltage is
A
0.1 V
B
1.0 V
C
1 mV
D
10 mV
4
AIPMT 2012 Prelims
MCQ (Single Correct Answer)
+4
-1
C and Si both have same lattice structure; having 4 bonding electrons in each. However, C is insulator where as Si is intrinsic semiconductor. This is because
A
In case of C the valence band is not completely filled at absolute zero temperature.
B
In case of C the conduction band is partly filled even at absolute zero temperature.
C
The four bonding electrons in the case of C lie in the second orbit, whereas in the case of Si they lie in the third.
D
The four bonding electrons in the case of C lie in the third orbit , whereas for Si they lie in the fourth orbit.
