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In common emitter amplifier, ratio of collector current to base current is called
voltage gain
resistance gain
current gain
slew rate
When electron jumps to conduction band, a Vacancy is left in the
valence band
forbidden energy band
nucleus band
conduction band
First Visible red LED were produced using GaAsP on
SiO surface
GaAs Surface
Be Surface
Si surface
Valence electrons in silicon are present in
12th shell
3rd shell
4th shell
8th shell
7906IC is a fixed regulator of
−6 V
−5 V
−8 V
−2 V
7906IC is a fixed regulator of
−2 V
−8 V
−5 V
−6 V
Bipolar Junction Transistor 'BJT' consist of
four terminals
five terminals
three terminals
two terminals
Bipolar Junction Transistor 'BJT' consist of
five terminals
two terminals
three terminals
four terminals
Negati Ve output counter part of LM317 is
40XX
LM224
LM337
79XX
Negati Ve output counter part of LM317 is
79XX
LM337
LM224
40XX
Which of following component insert a DC le Vel in awaveform
Amplifier
Clipper
limiter
Clamper
Which of following component insert a DC le Vel in awaveform
Amplifier
Clipper
limiter
Clamper
Charge in term of capacitance and voltage is expressed as
capacitance x voltage
capacitance- voltage
capacitance/ voltage
capacitance+ voltage
2IC is a fixed regulator of
−5.2 V
5.2 V
5 V
−5 V
LM317IC can operate as a
Amplifier
floating regulator
Modulator
inductor regulator
If internal emitter resistance of BJT is 20 Ω and collector resistor of amplifier is 1200 Ω than voltage gain will be
20
60
12
1200
Product of magnetic field and voltage is called
drift Velocity
width of semiconductor
current density
thickness of semiconductor
1N746 Zener diode is rated at maximum DC power dissipation of
200 MW
20 W
500 MW
50 W
Forward voltage drop of an LED is greater than
5 V
0.5 V
2.4 V
1.2 V
Assertion
(A): In CE connection of n-p-ntransistor.
VCE ispositive.
Reason (R): In BJT, the base collector junction is reverse biased
A is false but R is true
Both A and R are true and R is correct explanation of A
Both A and R are true but R is not a correct explanation of A
A is true but R is false
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