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Junction Transistor
Quiz 2
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Q.1
A device that convert ac into dc is known as ....
rectifier
amplifier
oscillator
voltage regulator
Q.2
Barrier potential of germanium diode at room temperature is
0.3 V
0.5 V
0.7 V
0.9 V
Q.3
Ripple factor of a half wave rectifier is
0.12
0.48
1.21
1
Q.4
In a transistor emittor base junction has
high resistance
zero resistance
low resistance
infinite resistance
Q.5
The voltage gain of a transistor connected in common collector configuration is ------
Less than one
Less than 2
> 1
None of these
Q.6
The output resistance of a transistor connected in -----arrangement is the highest.
common emitter
Common base
Both A & B
None of these
Q.7
If the value of α is 0.9,then value of β is -----
0.9
900
90
None of these
Q.8
The most commonly used semiconductor material in the manufacture of a transistor is ------
Carbon
Germanium
Silicon
Both A & B
Q.9
The voltage gain in a transistor connected in ------- arrangement is the highest
Common emitter
common collector
Common base
Both A & B
Q.10
Which ONE has the poorest bias stablisation without prevention of thermal runaway?
Fixed Bias
Emitter Feedback Bias
Collector Feedback Bias
Voltage Divider Bias
Q.11
In which region, the transistor operates.....?
Saturation Region
Cut-off Region
Active Region
None of the above
Q.12
The output impedance of a BJT transistor amplifier is __________ in nature.
resistive
capacitive
inductive
wireless
Q.13
The purpose of biasing is to establish a ______
amplification
power source
load line
Q-point
Q.14
Which statement about a transistor is correct?
Has two electrodes
Acts as a full wave rectifier
Has its own internal energy supply
Functions as an amplifier
Q.15
Which one of the following amplifier circuits provides a phase inversion between the input and output signal?
Common Base
Common source
Common collector
Common emitter
Q.16
The input and output signals of a common emitteramplifier are
in phase
90 degree out of phase
180 degree out of phase
270 degree out of phase
Q.17
If the transistor operates such that it is either in the saturation or cut-off region, it is operating as
a filter
a switch
a signal amplifier
an emitter follower
Q.18
They are circuits or devices with the capability to increase output voltages or current compared to the input.
couplers
amplifiers
conductors
bypass components
Q.19
Which of the following is the first step in analyzing BJT in AC domain?
setting all DC sources to 0 and replaced them a short circuit equivalent
all capacitors are replaced by short circuit
connecting the BJT to a coupling and bypass capacitors
all elements bypassed will be replaced by a short circuit equivalent
0 h : 0 m : 1 s
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