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Explain DC coupled drive circuit with unipolar output.
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Feb 19, 2018
by
anonymous
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Apr 21, 2018
by
anonymous
Explain DC coupled drive circuit with unipolar output.
dc
coupled
drive
circuit
unipolar
output
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answered
Feb 20, 2018
by
anonymous
DC coupled drive circuit with unipolar output:
The figure shows the circuit and waveforms
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Feb 19, 2018
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anonymous
Explain MOSFET gate drive circuit and totem pole configuration.
Explain MOSFET gate drive circuit and totem pole configuration.
Last answer:
MOSFET gate drive circuit: The turning on and turning off of MOSFET can be controlled from gate to source voltage signal. If the gate to source voltage of MOSFET exceeds threshold ... this configuration, the two switches (transistors) are used in totem pole arrangement with a comparator.
mosfet
gate
drive
circuit
totem
pole
configuration
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Explain open emitter BJT drive circuit.
Explain open emitter BJT drive circuit.
Last answer:
open emitter BJT drive circuit:
open
emitter
bjt
drive
circuit
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1
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Feb 19, 2018
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Explain thyristor gate drive circuit.
Explain thyristor gate drive circuit.
Last answer:
Thyristor Gate Drive Circuit: The thyristor can be turned on by pulse voltage signal at gate terminal and it does not require continuous drive signal like the transistor. The gate ... circuit provide required minimum gate voltage and gate current then the thyristor conducts properly.
thyristor
gate
drive
circuit
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Sep 4, 2018
by
anonymous
Draw the single stage RC coupled amplifier circuit and explain its’s operation.
Draw the single stage RC coupled amplifier circuit and explain its’s operation.
Last answer:
Operation:- The capacitors C1 and C2 are called as the coupling capacitors. As the load resistor RL (not shown in the diagram) is coupled to the amplifier through the coupling capacitor ... connected in the common emitter (CE) configuration. Therefore, this amplifier is called CE amplifier.
single
stage
rc
coupled
amplifier
circuit
operation
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Nov 14, 2017
by
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basic gate drive circuit of GTO
basic gate drive circuit of GTO
Last answer:
basic gate drive circuit of GTO
basic
gate
drive
circuit
gto
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1
answer
asked
Mar 10, 2018
by
anonymous
What is the difference between AC and DC drive?
What is the difference between AC and DC drive?
Last answer:
AC means alternating current It's Frequency is 50hz Dc means direct current ItsI Frequency is 0Hz
difference
between
ac
dc
drive
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1
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asked
Sep 13, 2017
by
anonymous
igbt is unipolar or bipolar?
Last answer:
IGBT is a bipolar device.
igbt
bipolar
unipolar
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1
answer
asked
Sep 5, 2018
by
anonymous
Explain full wave bridged rectifier with the help of circuit diagram and input output waveform.
Explain full wave bridged rectifier with the help of circuit diagram and input output waveform.
Last answer:
1. In positive half cycle (0 to Π): The end A of the secondary winding becomes positive and end B negative. This makes diode D1 and D4 forward biased while diode D2 and D3 are reverse biased. These two diodes will ... D2 and D3 when it is conducting is as follows. B - D2 - RL - D3 - A
full
wave
bridged
rectifier
input
output
waveform
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1
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asked
Sep 5, 2018
by
anonymous
Compare between BJT and FET on the basis of (i) Biolar/Unipolar (ii) Tharmal Runaway (iii) Noise (iv) Applications
Compare between BJT and FET on the basis of (i) Biolar/Unipolar (ii) Tharmal Runaway (iii) Noise (iv) Applications
Last answer:
Parameter BJT FET Bipolar/Unipolar It is bipolar device i.e. current in this device is carried by electrons and holes. It is unipolar device i.e. current ... in oscilloscopes, electronic voltmeters and other measuring and testing equipment because of their high input impedance.
bjt
fet
biolar
unipolar
tharmal
runaway
noise
applications
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1
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asked
Mar 11, 2018
by
anonymous
Explain transformer isolated drive circuits providing both signal and power.
Explain transformer isolated drive circuits providing both signal and power.
transformer
isolated
drive
circuits
signal
power
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asked
Mar 10, 2018
by
anonymous
Explain the pulse width modulation technique for control of AC output voltage.
Explain the pulse width modulation technique for control of AC output voltage.
pulse
width
modulation
technique
control
ac
output
voltage
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asked
Apr 29, 2018
by
anonymous
Consider a circuit with three parallel branches connected across a DC supply. What is the ratio of the branch
Consider a circuit with three parallel branches connected across a DC supply. What is the ratio of the branch currents I1 : I2 : I3 if the branch resistances are in the ratio of 2 : 3 : 4 respectively? A) 2 : 3 : 4 B) 6 : 4 : 3 C) 4 : 3 : 2 D) None of these
Last answer:
Consider a circuit with three parallel branches connected across a DC supply. What is the ratio of the branch currents I1 : I2 : I3 if the branch resistances are in the ratio of 2 : 3 : 4 respectively? A) 2 : 3 : 4 B) 6 : 4 : 3 C) 4 : 3 : 2 D) None of these
circuit
three
parallel
branches
connected
dc
supply
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asked
Sep 5, 2018
by
anonymous
State the need of cascade amplifier and draw circuit diagram of 2-stage direct coupled amplifier.
State the need of cascade amplifier and draw circuit diagram of 2-stage direct coupled amplifier.
Last answer:
Need:- The voltage (or power) gain, obtained from a single stage small signal amplifier, is limited. Therefore, it is not sufficient for all practical applications. Therefore, in order to obtain greater voltage and power gain, cascade amplifiers are used.
cascade
amplifier
2-stage
direct
coupled
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asked
Sep 6, 2018
by
anonymous
State maximum power transfer theorem for DC circuit.
State maximum power transfer theorem for DC circuit.
Last answer:
Maximum power transfer theorem for DC circuit: The maximum power transfer theorem states that the source or a network transfers maximum power to load only when the load resistance is equal ... removed (disconnected) ii) All internal independent sources are replaced by their internal resistances.
maximum
power
transfer
theorem
dc
circuit
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asked
Sep 2, 2018
by
anonymous
Define- (i) Node (ii) Loop for a DC circuit
Define- (i) Node (ii) Loop for a DC circuit
Last answer:
Ans: i) Node: A point or junction at which two or more elements of network are connected is called as node. ii) Loop: A closed path for flow of current in an electrical circuit is called loop.
node
loop
dc
circuit
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1
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asked
May 8, 2018
by
anonymous
For a DC circuit capacitor is
For a DC circuit capacitor is
Last answer:
For a DC circuit capacitor is virtually an open circuit
dc
circuit
capacitor
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70
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Apr 29, 2018
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A DC voltage source is connected across a series RLC circuit. Under steady-state conditions, the applied DC
A DC voltage source is connected across a series RLC circuit. Under steady-state conditions, the applied DC voltage drops entirely across the
Last answer:
A DC voltage source is connected across a series RLC circuit. Under steady-state conditions, the applied DC voltage drops entirely across the C only
dc
voltage
source
series
rlc
circuit
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1
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Apr 29, 2018
by
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A circuit that binds the upper or lower extreme of a waveform to a fixed DC voltage level is called ______
A circuit that binds the upper or lower extreme of a waveform to a fixed DC voltage level is called ______ A) DC voltage restorer B) Clamping circuit C) Both A and B D) None of these
Last answer:
A circuit that binds the upper or lower extreme of a waveform to a fixed DC voltage level is called ______ A) DC voltage restorer B) Clamping circuit C) Both A and B D) None of these
circuit
binds
upper
lower
extreme
waveform
fixed
dc
voltage
level
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1
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asked
Mar 10, 2018
by
anonymous
What is DC analysis of a circuit?
What is DC analysis of a circuit?
dc
analysis
circuit
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0
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asked
Mar 11, 2018
by
anonymous
What is the need for electrically isolated drive circuits?
What is the need for electrically isolated drive circuits?
electrically
isolated
drive
circuits
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0
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asked
Mar 11, 2018
by
anonymous
What are the fundamental requirements of gate drive ICs?
What are the fundamental requirements of gate drive ICs?
fundamental
gate
drive
ics
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asked
Sep 3, 2019
by
anonymous
applications of RC coupled amplifier
applications of RC coupled amplifier
Last answer:
Applications of RC coupled amplifier: (i) Widely used as Voltage amplifiers. (ii) They are used in Public Address System. (iii) In Tape recorders. (iv) In stereo amplifiers (v) In T.V. V.C.R. and C.D. Players.
rc
coupled
amplifier
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asked
Aug 19, 2019
by
anonymous
advantages and disadvantages of direct coupled amplifier over RC coupled amplifier.
advantages and disadvantages of direct coupled amplifier over RC coupled amplifier.
Last answer:
Advantages: Due to absence of coupling capacitors, the gain does not reduce on the lower frequency side. This amplifier can amplify dc signals. Reduced cost and complexity due to absence of ... The output waveform has a dc shift. Poor frequency response at a higher frequency.
direct
coupled
amplifier
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1
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asked
Aug 19, 2019
by
anonymous
transformer coupled amplifier
transformer coupled amplifier
Last answer:
transformer coupled amplifier
transformer
coupled
amplifier
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asked
Sep 5, 2018
by
anonymous
State the need of multistage amplifier. Draw frequency response of R-C coupled amplifier.
State the need of multistage amplifier. Draw frequency response of R-C coupled amplifier.
Last answer:
The need of multistage amplifier The voltage (or power) gain, obtained from a single stage small signal amplifier, is limited. Therefore, it is not sufficient for all practical applications. Therefore, in ... to use a MULTISTAGE AMPLIFIER . Frequency response of R-C coupled amplifier.
multistage
amplifier
frequency
response
r-c
coupled
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1
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asked
Sep 5, 2018
by
anonymous
Compare RC coupled, transformer coupled and direct coupled amplifier based on four points.
Compare RC coupled, transformer coupled and direct coupled amplifier based on four points.
Last answer:
Parameter RC coupled Transformer coupled Direct coupled Coupling element Resistor and capacitor Transformer No element Impedance matching Poor Excellent good Frequency ... Low frequency amplifier,opamp Size and cost small Large and bulky least
rc
coupled
transformer
direct
amplifier
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Sep 4, 2018
by
anonymous
List the advantages of RC coupled amplifier.
List the advantages of RC coupled amplifier.
Last answer:
Advantages: 1. The frequency response is excellent 2. The circuit is very compact and extremely light 3. Cost is low because it employ resistors and capacitors which are cheap
advantages
rc
coupled
amplifier
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asked
Mar 20, 2018
by
anonymous
An alternator coupled to a _____ runs at slow speed, as compared to others.
Last answer:
An alternator coupled to a hydraulic turbine runs at slow speed, as compared to others.
alternator
coupled
runs
slow
speed
compared
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1
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May 2, 2020
by
anonymous
With the help of N-channel JFET describe the effect of input voltage VGS on output current ID.
With the help of N-channel JFET describe the effect of input voltage VGS on output current ID.
Last answer:
Working of N channel FET: * When a voltage is applied between the drain and source with a DC supply (VDD), the electrons flows from source to drain through narrow channel ... where the channel gets completely blocked and the drain current becomes zero is called pinch- off voltage.
with
the
help
of
n-channel
jfet
describe
effect
input
voltage
vgs
on
output
current
id
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May 21, 2020
by
anonymous
With neat diagram explain synchronized UJT triggering circuit.
With neat diagram explain synchronized UJT triggering circuit.
Last answer:
Line Synchronized UJT triggering circuit: The UJT is almost ideal as a firing device for SCRs. There are 2 main reasons for the compatibility between UJTs and SCRs. Firstly, the UJT produces a ... , the SCR is sure to have the right polarity between the anode and cathode for turning on.
synchronized
ujt
triggering
circuit
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1
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asked
Oct 13, 2019
by
anonymous
Explain working of AC circuit breaker using SCR with circuit diagram.
Explain working of AC circuit breaker using SCR with circuit diagram.
Last answer:
AC Circuit Breaker: The circuit configuration of static AC circuit breaker using SCR is shown in the figure. When switch S' is closed, the SCRs T1 and T2 are fired in positive ... to non-availability of gate current. Thus the maximum time delay for breaking the circuit is one half-cycle.
working
ac
circuit
breaker
scr
diagram
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1
answer
asked
Apr 25, 2018
by
anonymous
A d.c. source has an open circuit voltage of 30 V and an internal resistance of 1.5 Ohm. A resistive load is ...
A d.c. source has an open circuit voltage of 30 V and an internal resistance of 1.5 Ohm. A resistive load is connected to the source. Maximum power dissipated in the load is (A) 300 W (B) 150 W (C) 45 W (D) 20 W
Last answer:
A d.c. source has an open circuit voltage of 30 V and an internal resistance of 1.5 Ohm. A resistive load is connected to the source. Maximum power dissipated in the load is 150 W
dc
open
circuit
voltage
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1
answer
asked
Mar 25, 2018
by
anonymous
The power factor of a D.C. circuit is always?
The power factor of a D.C. circuit is always?
Last answer:
The power factor of a D.C. circuit is always unity.
power
factor
dc
circuit
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145
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1
answer
asked
Mar 25, 2018
by
anonymous
All the rules and laws of D.C. circuit also apply to A.C. circuit containing?
All the rules and laws of D.C. circuit also apply to A.C. circuit containing?
Last answer:
All the rules and laws of D.C. circuit also apply to A.C. circuit containing resistance only.
rules
laws
dc
circuit
ac
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154
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1
answer
asked
Mar 20, 2018
by
anonymous
If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens?
Last answer:
If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens this will make armature to take heavy current, possibly burning it.
dc
shunt
motor
working
full
load
field
circuit
suddenly
opens
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105
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1
answer
asked
Jul 6, 2019
by
anonymous
Adjustable-speed drive
Adjustable-speed drive
Last answer:
.embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
adjustable-speed
drive
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60
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1
answer
asked
Apr 28, 2018
by
anonymous
In an adjustable speed ac drive which quantity gets reduced above rated speed ?
In an adjustable speed ac drive which quantity gets reduced above rated speed ? (A) developed torque (B) stator frequency (C) reduced starting torque (D) stator current
Last answer:
In an adjustable speed ac drive which quantity gets reduced above rated speed ? (A) developed torque (B) stator frequency (C) reduced starting torque (D) stator current
adjustable
speed
ac
drive
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78
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1
answer
asked
Mar 20, 2018
by
anonymous
For constant torque drive which speed control method is preferred ?
Last answer:
For constant torque drive armature voltage control speed control method is preferred.
constant
torque
drive
speed
control
method
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90
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1
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asked
Mar 18, 2018
by
anonymous
The synchronous motor which works on leading power factor and does not drive any mechanical load is called?
The synchronous motor which works on leading power factor and does not drive any mechanical load is called?
Last answer:
The synchronous motor which works on leading power factor and does not drive any mechanical load is called synchronous condenser.
synchronous
motor
leading
power
factor
drive
mechanical
load
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69
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1
answer
asked
Mar 10, 2018
by
anonymous
What is an electric motor drive?
What is an electric motor drive?
electric
motor
drive
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55
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0
answers
asked
Mar 10, 2018
by
anonymous
What is a drive in electrical controls?
What is a drive in electrical controls?
drive
electrical
controls
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62
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0
answers
asked
Mar 10, 2018
by
anonymous
What does an electric drive do?
What does an electric drive do?
electric
drive
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45
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0
answers
asked
Mar 10, 2018
by
anonymous
Can a power surge erase a hard drive?
Can a power surge erase a hard drive?
power
surge
erase
hard
drive
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43
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0
answers
asked
Aug 25, 2017
by
anonymous
Scherbius Drive System
Scherbius Drive System
Last answer:
Scherbius Drive System
scherbius
drive
system
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177
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1
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asked
Aug 25, 2017
by
anonymous
Kramer Drive System
Kramer Drive System
Last answer:
Kramer Drive System Kramer drive is a rotor side speed control drive of induction motor. Slip is the difference between synchronous speed and rotor speed. It is the ... and DC motor. The static Kramer drive is costlier because of the cost of DC motor.
kramer
drive
system
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388
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2
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asked
Aug 9, 2017
by
anonymous
Advantages of Variable Frequency Drive (VFD)
Advantages of Variable Frequency Drive (VFD)
Last answer:
Advantages of Variable Frequency Drive (VFD)
advantages
variable
frequency
drive
vfd
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74
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2
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asked
May 3, 2020
by
anonymous
Analyze the effect of supply voltage on performance of LED as regards current, Lumen output, efficacy and life.
Analyze the effect of supply voltage on performance of LED as regards current, Lumen output, efficacy and life.
Last answer:
1) Effect on Current:- In LED current depends upon supply voltage, if voltage get changes then current also change but this change in current will be control by resistors which are connected in series. 2) ... 4) Effect on Life:- If supply voltage is not stable then life of LED get reduced.
analyze
the
effect
of
supply
voltage
on
performance
led
as
regards
current
lumen
output
efficacy
and
life
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1
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May 2, 2020
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anonymous
Define: i) Input Offset Voltage ii) Input offset Current iii) Input Bias Current iv) Output offset voltage
Define: i) Input Offset Voltage ii) Input offset Current iii) Input Bias Current iv) Output offset voltage
Last answer:
Definition of parameters of OPAMP is follows: i) Input Offset Voltage: Input offset voltage is defined as the voltage that must be applied between the two input terminals of an OPAMP to null or ... to ground) and output voltage is obtained non zero such voltage is output offset voltage of opamp.
define
i
input
offset
voltage
ii
current
iii
bias
iv
output
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asked
Apr 1, 2020
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anonymous
A linear network has a current input 4cos(ω t + 20º)A and a voltage output 10 cos(ωt +110º) V. Determine the associated impedance.
A linear network has a current input 4cos(ω t + 20º)A and a voltage output 10 cos(ωt +110º) V. Determine the associated impedance.
Last answer:
Solution
linear
network
current
input
voltage
output
impedance
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asked
Apr 29, 2018
by
anonymous
The largest change of input quantity for which there is no output of instrument is called ______
The largest change of input quantity for which there is no output of instrument is called ______ A) Dead time B) Dead input C) Dead output D) Dead zone
Last answer:
The largest change of input quantity for which there is no output of instrument is called Dead zone
input
quantity
output
instrument
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answer
Install Now
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