1
MHT CET 2021 22th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

For a common-emitter amplifier, the voltage gain is 40. Its input and output impedances are $$100 \Omega$$ and $$400 \Omega$$, respectively. The power gain of the CE amplifier will be

A
450
B
400
C
300
D
500
2
MHT CET 2021 22th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Choose the correct statement. In semiconductors valance band and conduction band

A
is separated by large energy gap.
B
is separated by small energy gap:
C
is almost empty.
D
overlap each other.
3
MHT CET 2021 22th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

A logic gate which gives output 'HIGH' only when its two input terminals are at different logic levels with respect to each other is

A
NOR gate
B
OR gate
C
AND gate
D
X-OR gate
4
MHT CET 2021 22th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

Choose the FALSE statement from the following.

A
Generally, in conductors the valence and conducting bands overlap.
B
The resistivity of a semiconductor increases with increase in temperature
C
The conductivity of a semiconductor increase with increase in temperature
D
Substances with energy gap of the order of $$10 \mathrm{~eV}$$ are insulators
MHT CET Subjects
EXAM MAP