The following truth table belongs to which of the following four gates?
NOR
XOR
NAND
OR
Transistors are
electrons - sensitive device
pressure - sensitive device
holes - sensitive device
temperature - sensitive device
When arsenic is added as an impurity to silicon, the resulting material is
n-type semiconductor
p-type semiconductor
n-type conductor
insulator
When a triode is used as an amplifier the phase difference between the input signal voltage and the output is
zero
The transfer ratio β of a transistor is 50. The input resistance of the transistor when used in the common emitter configuration is 1kΩ. The peak value of the collector AC current for an AC input voltage of 0.01V peak is
100 μA
0.01 mA
0.25 mA
500 μA
Radiowaves of constant amplitude can be generated with
FET
filter
rectifier
oscillator
In a junction diode, the holes are due to
protons
extra electrons
neutrons
missing electrons
The current gain for a transistor working as common base amplifier is 0.96. If the emitter current is 7.2 mA, then the base current is
0.29 mA
0.35 mA
0.39 mA
0.43 mA
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 drios to almost zero. The device may be
a p-n junction
an intrinsic semiconductor
a p-type semiconductor
an n-type semiconductor
AND
