MCQs on Analog Electronics

Page 21 of 33. Go to page
01․ Conventional biasing of a BJT has
EB forward biased and CB forward biased.
EB reversed biased and CB forward biased.
EB forward biased and CB reversed biased.
EB reversed biased and CB reversed biased.

Under construction.
02․ The DC electric current gain in common collector configuration is given by
α.
β + 1.
β.
α - 1.

Under construction.
03․ Which of the following components are used for bias compensation in transistor circuit?
Rectifier diodes.
Resistors.
Thermistor.
Both (A) and (C) above.

Under construction.
04․ For a transistor amplifier with self- biasing network, the following components are used: R1 = 4 KΩ, R2 = 4 KΩ and RE = 1 KΩ, the approximate value of stability factor will be
4.
3.
2.
1.5.

Under construction.
05․ The voltage divider biasing circuit is used in amplifiers quite often because it
limits the AC signal going to base.
makes the operating point almost independent of β.
reduces the DC base electric current.
reduces the cost of the circuit.

Under construction.
06․ The leakage electric current ICBO flows in
the emitter, base and collector leads.
the emitter and base leads.
the emitter and collector leads.
the base and collector leads.

Under construction.
07․ Early effect in BJT refers to
avalanche breakdown.
thermal breakdown.
base narrowing.
zener breakdown.

Under construction.
08․ The emitter of the transistor is generally doped the heaviest because it
has to dissipate maximum power.
has to supply the charge carriers.
is the first region of transistor.
must possess low resistance.

Under construction.
09․ In a properly biased NPN transistor most of the electrons from the emitter
recombine with holes in the base .
recombine in the emitter its self.
pass through the base to the collector.
are stopped by the junction barrier.

Under construction.
10․ The following relationship between α and β are correct except
β = α / (1 - α).
α = β / (1 - β).
α = β / (1 + β).
1 - α = 1 / (1 + β).

Under construction.
<<<1920212223>>>