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Is BJT current controlled or voltage controlled?
asked
Sep 23, 2017
by
anonymous
bjt
controlled
device
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4
Answers
answered
Sep 23, 2017
by
anonymous
BJT is a current controlled device.
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answered
Dec 6, 2017
by
jihadio k jeeja
Current controlled
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answered
Jan 21, 2018
by
NITIN P. DESHMUKH
Current control
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answered
May 22, 2018
by
Neha8235
BJT is current controlled device.
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Related questions
asked
Sep 10, 2017
by
anonymous
is bjt a voltage controlled device ?
Last answer:
No, BJT is a current controlled device .
bjt
voltage
controlled
device
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155
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1
answer
asked
Sep 23, 2017
by
anonymous
MOSFET are current controlled or voltage controlled devices?
Last answer:
MOSFET are voltage controlled devices.
mosfet
controlled
device
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116
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3
answers
asked
Sep 10, 2017
by
anonymous
why bjt is called current controlled device?
Last answer:
In BJT there is movement of electrons and holes accros the junctions which is basicaly current flow.
controlled
current
bjt
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2
answers
asked
Sep 10, 2017
by
anonymous
why mosfet is voltage controlled device?
Last answer:
already answered here is mosfet current controlled device?
mosfet
voltage
controlled
device
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126
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1
answer
asked
Sep 13, 2017
by
anonymous
is igbt current controlled device ?
Last answer:
No, IGBT is not the current controlled device. IGBT is a voltage controlled device. IGBT have combine qualities of MOSFET and BJT. The high switching speed of MOSFET and low conduction losses of BJT. Also, IGBT which stands for Insulated Gate Bipolar Transistor have high input impedance.
igbt
current
controlled
device
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130
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1
answer
asked
Sep 10, 2017
by
anonymous
why thyristor is called semi controlled device?
Last answer:
Thyristor can only be turned on by small gate pulse but it cannot be turn off by using gate hence thyristor is called semi controlled device.
thyristor
semi
controlled
device
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1
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asked
Sep 10, 2017
by
anonymous
bjt is active or passive?
Last answer:
BJT control the flow of electron so it is a active device.
bjt
active
passive
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1
answer
asked
Apr 30, 2018
by
anonymous
A current controlled voltage source is equivalent to :
A current controlled voltage source is equivalent to : (A) series voltage feed -back amplifier (B) shunt current feed -back amplifier (C) shunt voltage feed -back amplifier (D) series current feed -back amplifier
Last answer:
A current controlled voltage source is equivalent to : shunt voltage feed -back amplifier
current
controlled
voltage
source
equivalent
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66
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1
answer
asked
May 1, 2018
by
anonymous
The speed of a three-phase induction motor is controlled by variable voltage variable frequency control
The speed of a three-phase induction motor is controlled by variable voltage variable frequency control (i.e. keeping V/f constant). As the frequency is reduced, the slip at maximum torque (1) Decreases (2) Increases (3) Remains constant (4) None of the above
Last answer:
The speed of a three-phase induction motor is controlled by variable voltage variable frequency control (i.e. keeping V/f constant). As the frequency is reduced, the slip at maximum torque Increases
speed
three-phase
induction
motor
controlled
variable
voltage
frequency
control
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118
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1
answer
asked
Apr 28, 2018
by
anonymous
In voltage source converter based HVDC transmission system the active power is controlled by changing
In voltage source converter based HVDC transmission system the active power is controlled by changing (A) phase angle of the converter ac input voltage (B) supply frequency of the converter ac input voltage (C) magnitude of the converter ac input voltage (D) DC voltage at the inverter terminals
Last answer:
In voltage source converter based HVDC transmission system the active power is controlled by changing phase angle of the converter ac input voltage
voltage
source
converter
hvdc
transmission
system
active
power
controlled
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1
answer
asked
Apr 27, 2018
by
anonymous
For a 15-bus power system with 3 voltage controlled buses, the size of Jacobian matrix is
For a 15-bus power system with 3 voltage controlled buses, the size of Jacobian matrix is
Last answer:
For a 15-bus power system with 3 voltage controlled buses, the size of Jacobian matrix is 25 x 25
power
system
voltage
controlled
buses
size
jacobian
matrix
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1
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asked
Apr 29, 2018
by
anonymous
A 3 -phase, fully controlled, converter is feeding power into a DC load at a constant current of 150 A, the rms
A 3 -phase, fully controlled, converter is feeding power into a DC load at a constant current of 150 A, the rms value of the current flowing through each thyristor of the converter is
Last answer:
A 3 -phase, fully controlled, converter is feeding power into a DC load at a constant current of 150 A, the rms value of the current flowing through each thyristor of the converter is 150/√3
fully
controlled
converter
feeding
power
dc
load
constant
current
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1
answer
asked
Mar 21, 2018
by
anonymous
The gravity controlled instrument has crowded scale because current is proportional to?
Last answer:
The gravity controlled instrument has crowded scale because current is proportional to sine of deflection angle.
gravity
controlled
instrument
crowded
scale
current
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138
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1
answer
asked
Apr 29, 2018
by
anonymous
When the firing angle a of a single-phase, fully controlled rectifier feeding constant direct current into a
When the firing angle a of a single-phase, fully controlled rectifier feeding constant direct current into a load is 30°, the displacement power factor of the rectifier is
Last answer:
When the firing angle a of a single-phase, fully controlled rectifier feeding constant direct current into a load is 30°, the displacement power factor of the rectifier is √3/2
firing
angle
single-phase
fully
controlled
rectifier
feeding
constant
direct
current
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1
answer
asked
Jun 18, 2018
by
anonymous
If the base current of a BJT is 250 µA and emitter current is 15 mA, then the common base current gain will be
If the base current of a BJT is 250 µA and emitter current is 15 mA, then the common base current gain will be A) 0.98 B) 0.41 C) 59 D) 55
Last answer:
If the base current of a BJT is 250 µA and emitter current is 15 mA, then the common base current gain will be 0.98
bjt
emitter
current
common
base
gain
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1
answer
asked
Apr 26, 2018
by
anonymous
An FET is a better chopper than a BJT because it has
An FET is a better chopper than a BJT because it has (A) lower offset voltage (B) higher series ON resistance (C) lower input current (D) higher input impedance
Last answer:
An FET is a better chopper than a BJT because it has lower offset voltage
fet
bjt
chopper
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537
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1
answer
asked
Mar 10, 2018
by
anonymous
What is a BJT?
What is a BJT?
Last answer:
Bipolar Junction Transistor (BJT): BJT is a Bipolar device. (Uses both electrons and holes charge carrier for current conduction) Two Junctions (Emitter junction & collector ... mode (Current amplification) Cutoff mode (Open switch) Saturation mode (Close switch)
bjt
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2
answers
asked
Sep 29, 2017
by
anonymous
is IGBT costlier than BJT and MOSFET?
Last answer:
Yes IGBT is costlier than BJT and MOSFET.
igbt
bjt
mosfet
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1
answer
asked
Sep 10, 2017
by
anonymous
when bjt is in cutoff ?
Last answer:
When Q-point is at cut off region means it is just above the horizontal axis VCE
bjt
cutoff
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1
answer
asked
Sep 10, 2017
by
anonymous
what is bjt biasing?
Last answer:
The proper flow of zero signal collector current and the maintenance of the proper collector emmiter voltage during passage of single called as transistor biasing
bjt
biasing
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answer
asked
Sep 10, 2017
by
anonymous
bjt what is beta ?
Last answer:
Beta is the current gain which is the ratio of collector current to base current.
bjt
beta
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answer
asked
Sep 5, 2018
by
anonymous
Draw circuit diagram of voltage divider biasing list two advantages of voltage divider biasing of BJT.
Draw circuit diagram of voltage divider biasing list two advantages of voltage divider biasing of BJT.
Last answer:
Two advantages of voltage divider biasing of BJT. 1. It is very simple method of transistor biasing. 2. The biasing conditions can be very easily set. 3. there is no loading of ... 5. The resistor RE introduces a negative feedback. So all the advantages of negative feedback are obtained.
voltage
divider
biasing
advantages
bjt
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1
answer
asked
Sep 27, 2017
by
anonymous
does the BJT have internal capacitance?
Last answer:
Yes BJT have internal capacitances.
bjt
internal
capacitance
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answer
asked
Sep 27, 2017
by
anonymous
in which region BJT act as a switch?
Last answer:
BJT act as switch in saturation and cutoff region ( ON state in saturation region and OFF state in cut-off region )
bjt
region
switch
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2
answers
asked
Sep 27, 2017
by
anonymous
in which BJT operating region both the junctions are reverse biased?
Last answer:
In cut-off region of BJT both the emitter-base junction and collector-base junction are reverse biased.
bjt
region
reverse
bias
junction
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2
answers
asked
Sep 27, 2017
by
anonymous
in which region BJT act as amplifier?
Last answer:
Active region of BJT act as amplifier.
bjt
region
amplifier
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2
answers
asked
Sep 27, 2017
by
anonymous
what are the three operating regions of BJT?
Last answer:
Active , Saturation , Cut-off region of operations in BJT.
operating
regions
bjt
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asked
Sep 23, 2017
by
anonymous
Does BJT have second breakdown problem?
Last answer:
Yes BJT have second breakdown problem.
bjt
second
breakdown
problem
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1
answer
asked
Sep 21, 2017
by
anonymous
BJT have how many terminals?
Last answer:
BJT have three terminals Base, emitter and collector.
bjt
terminals
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1
answer
asked
Sep 10, 2017
by
anonymous
what does bjt stand for?
Last answer:
Bipolar junction transistor
bjt
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1
answer
asked
Sep 10, 2017
by
anonymous
what are bjt amplifiers used for?
Last answer:
Transformer coupled amplifiers Direct coupled amplifiers Multistage amplifiers Darlington amplifiers Emmiter follower
bjt
amplifiers
used
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1
answer
asked
Sep 10, 2017
by
anonymous
what are bjt transistors?
Last answer:
Bjt transistor is a type of transistor which uses both electrons and hole charge carrier.bjts are used as switches and amplifiers.They amplify currents.
bjt
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81
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1
answer
asked
Mar 22, 2018
by
anonymous
The speed of a locomotive is controlled by?
Last answer:
The speed of a locomotive is controlled by gear box.
speed
locomotive
controlled
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61
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1
answer
asked
May 21, 2020
by
anonymous
State classification of Phase controlled rectifiers.
State classification of Phase controlled rectifiers.
Last answer:
Classification of phase controlled rectifiers:
classification
phase
controlled
rectifiers
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43
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1
answer
asked
May 7, 2020
by
anonymous
Application one lamp controlled from two places
Application one lamp controlled from two places
Last answer:
Application one lamp controlled from two places: 1. For Stair case wiring 2. Hospital Wiring ( For operating the lamp in room and nursing station) 3. Bedroom Lighting.
application
one
lamp
controlled
from
two
places
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71
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1
answer
asked
Oct 13, 2019
by
anonymous
Single-phase mid-point controlled rectifier with RL load
Single-phase mid-point controlled rectifier with RL load
Last answer:
Single-phase mid-point controlled rectifier with RL load : The circuit configuration of single-phase midpoint controlled rectifier is shown in the figure. During positive half-cycle of ... some part of next positive half-cycle of voltage with reversed polarity can appear across load.
single-phase
mid-point
controlled
rectifier
rl
load
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89
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1
answer
asked
Oct 13, 2019
by
anonymous
Single-phase Midpoint controlled rectifier with Resistive load
Single-phase Midpoint controlled rectifier with Resistive load
Last answer:
Single-phase Midpoint controlled rectifier with Resistive load: 1) During positive half cycle of AC supply, a is positive with respect to b , this makes T1 forward biased and T2 is reverse ... voltage reverses the polarity and T2 is turned off. The operation is as shown in waveforms.
single-phase
midpoint
controlled
rectifier
resistive
load
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131
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1
answer
asked
Jul 25, 2019
by
anonymous
Give the operation of single phase full wave bridge controlled converter with RL load with a neat diagram. Also draw its waveform.
Give the operation of single phase full wave bridge controlled converter with RL load with a neat diagram. Also draw its waveform.
Last answer:
Single phase fully control bridge converter with RL load: 1. During positive half cycle of input voltage, T1 and T2 are forward biased and during negative half cycle, T3 and T4 are forward biased. Therefore, T1-T2 ... cycle till the firing of next pair of SCRs as shown in the waveform.
single
phase
full
wave
bridge
controlled
converter
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155
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1
answer
asked
Jul 25, 2019
by
anonymous
Draw a neat diagram of 1Ф half wave controlled converter with RL load. Give its operation.
Draw a neat diagram of 1Ф half wave controlled converter with RL load. Give its operation.
Last answer:
Single phase fully controlled half wave converter: The circuit diagram of single-phase half-wave controlled rectifier with RL load and without freewheeling diode is shown in Fig. (a). The SCR T is ... , when again pulse is applied, the SCR is turned on & the above cycle is repeated.
half
wave
controlled
converter
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2.6k
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2
answers
asked
Sep 8, 2018
by
anonymous
How are nuclear reactors controlled? Explain two different methods in brief.
How are nuclear reactors controlled? Explain two different methods in brief.
Last answer:
Nuclear reactor is controlled using control rods: Control rods are made up of very high neutron absorbing material like boron, cadmium. By adjusting height of control rods on reactor core ... of nuclear reaction will increase. Whereas by pushing control rod towards the core it will reduce.
nuclear
reactors
controlled
different
methods
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58
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2
answers
asked
Apr 28, 2018
by
anonymous
A 230 V, 50 Hz phase controlled single-phase full-controlled SCR bridge converter draws 15 A constant dc
A 230 V, 50 Hz phase controlled single-phase full-controlled SCR bridge converter draws 15 A constant dc current. If the source inductance is 3 mH, the drop in dc output voltage is (A) 4.5 V (B) 6.75 V (C) 9 V (D) 13.5 V
Last answer:
A 230 V, 50 Hz phase controlled single-phase full-controlled SCR bridge converter draws 15 A constant dc current. If the source inductance is 3 mH, the drop in dc output voltage is 9 V
phase
controlled
single-phase
full-controlled
scr
bridge
converter
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110
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1
answer
asked
Mar 15, 2018
by
anonymous
How many servos can be controlled by Arduino?
How many servos can be controlled by Arduino?
servos
controlled
arduino
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56
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0
answers
asked
Aug 25, 2017
by
anonymous
Chopper controlled DC motor
Chopper controlled DC motor
Last answer:
Chopper controlled DC motor
chopper
controlled
dc
motor
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157
views
1
answer
asked
Jul 24, 2019
by
anonymous
State reason BJT is called as bipolar junction transistor.
State reason BJT is called as bipolar junction transistor.
Last answer:
BJT is called bipolar junction transistor because in BJT current conduction takes place due to majority as well as minority charge carriers.
bjt
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4.9k
views
1
answer
asked
Apr 28, 2018
by
anonymous
Which phenomenon is present in thyristors but absent in BJT, MOSFET and IGBT ?
Which phenomenon is present in thyristors but absent in BJT, MOSFET and IGBT ? (A) forward conduction (B) latching (C) forward blocking (D) reverse breakdown
Last answer:
Which phenomenon is present in thyristors but absent in BJT, MOSFET and IGBT ? (A) forward conduction (B) latching (C) forward blocking (D) reverse breakdown
thyristors
bjt
mosfet
igbt
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3.0k
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1
answer
asked
Mar 19, 2018
by
anonymous
What is the difference between BJT and FET?
What is the difference between BJT and FET?
Last answer:
BJT is a current opperated transistor while FET is a field opperated transistor.
difference
between
bjt
fet
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2.6k
views
1
answer
asked
Mar 19, 2018
by
anonymous
What is a BJT amplifier?
What is a BJT amplifier?
bjt
amplifier
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75
views
0
answers
asked
Mar 19, 2018
by
anonymous
Is the input impedance of MOSFET more than BJT and FET?
Is the input impedance of MOSFET more than BJT and FET?
Last answer:
Yes, the input impedance of MOSFET more than BJT and FET.
input
impedance
mosfet
bjt
fet
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286
views
1
answer
asked
Feb 20, 2018
by
anonymous
What is the difference between beta and forced beta for BJT?
What is the difference between beta and forced beta for BJT?
difference
between
bjt
beta
forced
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518
views
0
answers
asked
Feb 3, 2018
by
anonymous
Operating frequency of power MOSFET is higher than that of power BJT. Justify the statement.
Operating frequency of power MOSFET is higher than that of power BJT. Justify the statement.
Last answer:
Power MOSFET have high turning on and turning off capability high switching speed of MOSFET is due to the high rate of change of drain voltage. The switching losses of power MOSFET ... lower frequency. Hence, operating frequency of power MOSFET is higher than that of power BJT.
mosfet
bjt
frequency
operating
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692
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1
answer
...