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What is the function of a thyristor?
asked
Mar 19, 2018
by
anonymous
What is the function of a thyristor?
function
thyristor
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commented
Aug 13, 2019
by
anonymous
Current controller
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asked
Mar 19, 2018
by
anonymous
What is the use of a thyristor in a circuit?
What is the use of a thyristor in a circuit?
use
thyristor
circuit
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1
asked
Mar 19, 2018
by
anonymous
What is a phase control thyristor?
What is a phase control thyristor?
phase
control
thyristor
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2
asked
Mar 19, 2018
by
anonymous
What is a reverse conducting thyristor?
What is a reverse conducting thyristor?
reverse
conducting
thyristor
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asked
Mar 19, 2018
by
anonymous
What is the application of thyristor?
What is the application of thyristor?
application
thyristor
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4
asked
Mar 19, 2018
by
anonymous
What is meant by firing angle of thyristor?
What is meant by firing angle of thyristor?
Last answer:
The point at which SCR is triggered is known as firings angle of thyristor.
firing
angle
thyristor
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5
asked
Dec 6, 2017
by
anonymous
what are the disadvantages of thyristor?
what are the disadvantages of thyristor?
Last answer:
Disadvantages of thyristor The silicon controlled rectifier (SCR) is unidirectional devices, so it can control power only in DC power during positive half cycle of AC supply. Thus only DC power is ... cycle. It cannot be used at higher frequencies. The gate current cannot be negative
disadvantages
thyristor
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6
asked
Mar 19, 2018
by
anonymous
What is thyristor family?
What is thyristor family?
thyristor
family
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asked
Aug 8, 2017
by
anonymous
what is gate turn off thyristor (GTO)?
Draw the structural diagram of GTO. Explain briefly the switching behavior of GTO with the help of appropriate voltage and current waveform.
Last answer:
Gate Turn Off Thyristor (GTO) Conventional Thyristor can be turned on with gate terminal but can not turn off from gate terminal. But in case of Gate Turn Off Thyristor (GTO), we can turn it on and off ... subdivided as storage period (Ts), fall period (Tp) and tail period (Tt).
gto
gate
turn
off
thyristor
voltage
current
waveform
switching
characteristics
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asked
Mar 19, 2018
by
anonymous
Is a SCR a thyristor?
Is a SCR a thyristor?
Last answer:
Yes, SCR is a thyristor. Thyristor is the family and SCR is the member of that family but SCR is universally known as thyristor.
scr
thyristor
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9
asked
Mar 19, 2018
by
anonymous
How is a thyristor used to convert AC to DC?
How is a thyristor used to convert AC to DC?
thyristor
used
convert
ac
dc
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10
asked
Mar 6, 2018
by
anonymous
Is thyristor a DC switch?
Last answer:
Yes ,it is one of the main advantage using thristors as a switch in DC circuit ,it has a high current gain
thyristor
dc
switch
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asked
Mar 19, 2018
by
anonymous
Why SCR is called as thyristor?
Why SCR is called as thyristor?
scr
thyristor
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asked
Dec 7, 2017
by
anonymous
parallel operation of mosfet can be done more easily as compared to thyristor. why?
parallel operation of MOSFET can be done more easily as compared to thyristor. why?
Last answer:
Parallel operation of MOSFET can be done more easily as compared to thyristor because the resistance of MOSFET is increases with increase in temperature. MOSFET have the positive temperature coefficient. In ... the parallel operation of MOSFET can be done more easily as compared to the thyristor.
mosfet
thyristor
parallel
operation
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13
asked
May 8, 2018
by
anonymous
Leakage current flows through the thyristor in
Leakage current flows through the thyristor in
Last answer:
Leakage current flows through the thyristor in Forward blocking mode and Reverse blocking mode.
leakage
current
flows
thyristor
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14
asked
May 8, 2018
by
anonymous
Thyristor can be protected from over voltages by using
Thyristor can be protected from over voltages by using
Last answer:
Thyristor can be protected from over voltages by using Voltage clamping device
thyristor
protected
over
voltages
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15
asked
Mar 19, 2018
by
anonymous
Why thyristor are not preferred for inverter?
Why thyristor are not preferred for inverter?
thyristor
preferred
inverter
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16
asked
Feb 19, 2018
by
anonymous
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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17
asked
Nov 15, 2017
by
anonymous
write short notes on thyristor CSI .
write short notes on thyristor CSI .
Last answer:
Current-source inverter (CSI) is an inverter with a DC current input. Current source inverters are most commonly used in very high power AC motor drives.
thyristor
csi
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2
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18
asked
Sep 21, 2017
by
anonymous
What is mean by forced commutation of thyristor?
Last answer:
By using some circuit the forward DC current of thyristor is forced to zero is called forced commutation.
forced
commutation
thyristor
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19
asked
Sep 21, 2017
by
anonymous
What is mean by natural commutation of thyristor?
Last answer:
Natural commutation is also called as line Communication. The turning off of thyristor due to AC supply is called natural commutation or line commutation. If the thyristor is connected to AC supply ... connected to positive and anode terminal get connected to negative, this turns off the thyristor.
natural
commutation
thyristor
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20
asked
Oct 13, 2019
by
anonymous
Write the function of freewheeling diode.
Write the function of freewheeling diode.
Last answer:
Function of Freewheeling Diode (FWD): a) Freewheeling diode is used across inductive loads such as coils, dc motor armature etc. to prevent voltage spikes across these loads when the switching ... current is shifted from switching device, it is turned off easily and regain its blocking ability.
function
freewheeling
diode
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21
asked
Sep 10, 2017
by
anonymous
what is thyristor commutation?
Last answer:
Thyristor commutation means turning off thyristor.
thyristor
commutation
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109
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1
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22
asked
Mar 15, 2018
by
anonymous
What is the basic function of a capacitor?
What is the basic function of a capacitor?
basic
function
capacitor
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55
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0
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23
asked
Jun 1, 2019
by
anonymous
What is the function of an electrical filter ?
What is the function of an electrical filter ?
Last answer:
Filter separates different components that are mixed together. Electrical filter can separate different frequency components. Electrical filters are the electrical circuits which are use to remove unwanted frequency components from the signal.
what
is
the
function
of
an
electrical
filter
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24
asked
Mar 17, 2018
by
anonymous
What is the function of induction motor?
What is the function of induction motor?
Last answer:
while you give supply to motor its motor run on magnet base
function
induction
motor
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1
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25
asked
Sep 21, 2017
by
anonymous
when a thyristor conducts?
Last answer:
Thyristor conducts when the anode voltage is greater than cathode and when the current provided to Gate.
thyristor
conduct
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26
asked
Jun 18, 2018
by
anonymous
What does double integration of a unit step function lead to?
What does double integration of a unit step function lead to? A) A doublet B) A ramp C) An impulse D) A parabola
Last answer:
What does double integration of a unit step function lead to? A) A doublet B) A ramp C) An impulse D) A parabola
double
integration
unit
step
function
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321
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1
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27
asked
May 3, 2020
by
anonymous
Describe the working principle of Thyristor operated dimmer with the help of circuit diagram.
Describe the working principle of Thyristor operated dimmer with the help of circuit diagram.
Last answer:
Thyristor operated dimmer: A popular thyristor operated dimmer circuit employ TRIAC-DIAC phase control for low AC power control. During each half-cycle, the capacitor charges through (R1+VR1). When the ... time constant {C (R1+VR1)}. Thus by reducing VR1 the lamp brightness can be increased.
describe
the
working
principle
of
thyristor
operated
dimmer
with
help
circuit
diagram
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166
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28
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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916
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1
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29
asked
Sep 10, 2017
by
anonymous
why thyristor is called latching device?
Last answer:
Thyristor can be turn on by positive gate pulse and the current will continue to flow through the device even when the gate voltage is low hence thyristor is called latching device.
thyristor
latching
device
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597
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1
answer
30
asked
Mar 10, 2018
by
anonymous
What is the membership function in fuzzy logic?
What is the membership function in fuzzy logic?
membership
function
fuzzy
logic
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51
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0
answers
31
asked
Sep 7, 2018
by
anonymous
What is penstock? What is its function?
What is penstock? What is its function?
Last answer:
What is Penstock:- The penstock is the long pipe line. It consists of heavy duty steel pipe. Function of Penstock:- Function of penstock is to carry water from the water intake (reservoir) to turbine.
penstock
function
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34
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1
answer
32
asked
Apr 29, 2018
by
anonymous
The function of a brush and commutator arrangement in a dc motor is to
The function of a brush and commutator arrangement in a dc motor is to (1) produce unidirectional torque (2) produce unidirectional current in the armature (3) help in changing the direction of rotation of the armature (4) reduce sparking
Last answer:
The function of a brush and commutator arrangement in a dc motor is to produce unidirectional torque
function
brush
commutator
dc
motor
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1
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33
asked
Apr 29, 2018
by
anonymous
The function of a surge tank is to
The function of a surge tank is to (1) produce surge in the pipeline (2) relieve water hammer pressure in the penstock (3) supply water at constant pressure (4) none of above
Last answer:
The function of a surge tank is to relieve water hammer pressure in the penstock
function
surge
tank
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60
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1
answer
34
asked
Mar 20, 2018
by
anonymous
In a capacitor start and run motors the function of the running capacitor in series with the auxiliary winding is to?
Last answer:
In a capacitor start and run motors the function of the running capacitor in series with the auxiliary winding is to improve power factor.
capacitor
start
run
motors
function
running
series
auxiliary
winding
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419
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1
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35
asked
Mar 19, 2018
by
anonymous
The main function of a fuse is to?
Last answer:
The main function of a fuse is to prevent excessive currents.
main
function
fuse
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66
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1
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36
asked
Mar 19, 2018
by
anonymous
The function of breather in a transformer is?
Last answer:
The function of breather in a transformer is to arrest flow of moisture when outside air enters the transformer.
function
breather
transformer
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100
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1
answer
37
asked
Sep 21, 2017
by
anonymous
can we turn off thyristor using Gate?
Last answer:
No we cannot turn off normal thyristor using Gate.
thyristor
turn
off
using
gate
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69
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38
asked
Sep 21, 2017
by
anonymous
thyristor have how many terminals?
Last answer:
Thyristor have three terminals anode, cathode and Gate.
terminals
thyristor
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44
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1
answer
39
asked
Sep 10, 2017
by
anonymous
thyristor can be turned off by?
Last answer:
Thyristor can be turned off by making anode potential equal to cathode potential or by making anode potential less than cathode potential.
thyristor
turned
off
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40
asked
Aug 9, 2017
by
anonymous
Thyristor Switched Capacitor (TSC)
Thyristor Switched Capacitor (TSC)
Last answer:
Thyristor Switched Capacitor (TSC) TSC is a static compensator. TSC is use for compensating reactive power. Compensation is required for voltage regulation, increasing stability, ... compensating device like TCS phase angle between voltage and current can be maintain.
thyristor
switched
capacitor
tsc
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169
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1
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41
asked
Aug 2, 2019
by
anonymous
State the function of super heater of a thermal power plant.
State the function of super heater of a thermal power plant.
Last answer:
Function of Super heater: - Its function is to increase the temperature of steam by absorbing heat from exhausted hot flue gases.
function
super
heater
thermal
power
plant
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53
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1
answer
42
asked
Apr 29, 2018
by
anonymous
The necessary and sufficient condition for a rational function of, T(s) to be driving point impedance of an RC
The necessary and sufficient condition for a rational function of, T(s) to be driving point impedance of an RC network is that all poles and zeros should be
Last answer:
The necessary and sufficient condition for a rational function of, T(s) to be driving point impedance of an RC network is that all poles and zeros should be simple and and lie on the negative axis in the s -plane
sufficient
condition
rational
function
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71
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1
answer
43
asked
Apr 26, 2018
by
anonymous
With the knowledge of the state variable representation of a plant the transfer function of the plant
With the knowledge of the state variable representation of a plant the transfer function of the plant
Last answer:
With the knowledge of the state variable representation of a plant the transfer function of the plant can be determined completely
state
variable
representation
plant
transfer
function
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47
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1
answer
44
asked
May 8, 2018
by
anonymous
The function of steel wire in ACSR conductors is
The function of steel wire in ACSR conductors is (A) To take care of surges. (B) To reduce corona. (C) To reduce inductance. (D) To provide additional mechanical strength
Last answer:
The function of steel wire in ACSR conductors is To provide additional mechanical strength
function
steel
wire
acsr
conductors
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3.2k
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1
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45
asked
Mar 25, 2018
by
anonymous
The r.m.s. value of pure cosine function is?
The r.m.s. value of pure cosine function is?
Last answer:
0.707 of peak value
rms
value
pure
cosine
function
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219
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2
answers
46
asked
Mar 21, 2018
by
anonymous
The function of shunt in an ammeter is to?
Last answer:
The function of shunt in an ammeter is to by pass the current.
function
shunt
ammeter
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254
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1
answer
47
asked
May 2, 2020
by
anonymous
Draw block diagram of PLL as a FM demodulator. Explain function of each block.
Draw block diagram of PLL as a FM demodulator. Explain function of each block.
Last answer:
Operation: The FM signal which is to be demodulated is applied at the input of the PLL. the PLL is locked to the FM The error voltage produced at ... using PLL ensures a high Linearity, between the instantaneous input frequency and VCO control voltage (error amplifier output)
draw
block
diagram
of
pll
as
a
fm
demodulator
explain
function
each
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103
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1
answer
48
asked
Sep 6, 2018
by
anonymous
Draw a labeled block diagram of sine wave generator and state function of each block.
Draw a labeled block diagram of sine wave generator and state function of each block.
Last answer:
Function Generator: This instrument can deliver sine, triangular & square waves with frequency range of 0.01 Hz to 100 kHz. The frequency control network is governed by a frequency ... voltage reaches a predetermined level on the negative slope of the integrator's output voltage.
sine
wave
generator
state
function
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304
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1
answer
49
asked
May 3, 2018
by
anonymous
A transfer function has a second order denominator and constant gain in the numerator
A transfer function has a second order denominator and constant gain in the numerator
Last answer:
A transfer function has a second order denominator and constant gain in the numerator the system has two zeros at infinity
transfer
function
second
order
denominator
constant
gain
numerator
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0
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86
views
1
answer
50
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