The unit of capacitance is
henry
farad
weber
tesla
A semiconducting device is connected in a series in circuit with a battery and a resistance. A current is allowed to pass through the circuit. If the polarity of the battery is reversed, the current drops to almost zero. The device may be
a p-n junction
an intrinsic semiconductor
a p-type semiconductor
an n-type semiconductor
For a full wave rectifier, the minimum number of diodes required is
2
3
4
1
In a semi conductor crystal if the current flows due to breakage of crystal bonds, then the semiconductor is called
acceptor
donor
extrinsic semiconductor
intrinsic semiconductor
Radio waves of constant amplitude can be generated with
FET
Filter
Rectifier
Oscillator
On increasing the reverse bias to a large valve in a p-n junction, the diode current
remains fixed
increases slowly
decreases slowly
suddenly increases
Which of the following when added as an impurity into silicon produces n-type semiconductor?
P
AI
B
Mg
At 0 k, an intrinsic semiconductor behaves as
a super conductor
a semi conductor
a perfect conductor
a perfect insulator
When n-type semiconductor is heated
number of electrons increases while that of holes decreases
number of holes increases while that of electrons decreases
number of electrons and holes remains same
number of electrons and holes increases equally
When arsenic is added as an impurity to silicon, the resulting material is
n-type semiconductor
p-type semiconductor
n-type conductor
insulator
