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Question
WHAT IS A BASIC DIFFERENCE BETWEEN THYRISTOR,TRIAC AND A 
DIAC.AND WHAT R THERE APPLICATIONS?
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
Thyrister is semicondoctor device convert the stable dc
to variable dc which has a three terminals
anod ,cathod,gate.
The diac is simelar to thyrister which biddirectional
without gate terminal work on both ac&dc.
the triac is known as diac with gate.

APPLICATION:-
THYRISTOR;-IT USED AT
minehauler,pressmachine,HVDCpawersupply.
In future bracking in automobile,regenrativebraking.
 
Is This Answer Correct ?    63 Yes 30 No
Aniruddh
 
Answer
# 2
thyrister means four layer three terminal semi conductor
devices its unidirectional its use ac or dc
triac means triode working on ac ,triac is a
bidirctional,three terminal devices , main terminal1, main
terminal2, gate,
diac means diode working on ac its two terminals , main
terminal1.terminal2
 
Is This Answer Correct ?    35 Yes 12 No
Sakkaravarthi Arakonam
 
 
 
Answer
# 3
Thyristor means is a 4 layer device with two terminals ,
the anode and the cathode. The main diff is the silicon
controlled rectifier.
The diac means it has two terminals A1 , A2. It conduction
occurs in a diac when the breakover voltage is reached with
either polarity across the two terminals.
The triac is like a diac with a gate terminal it's mean
three terminals. A triac can be turned on by a pulse of
gate current and does not require the breakover voltage to
initiate conduction.
 
Is This Answer Correct ?    15 Yes 18 No
Abid Mirza
 
Answer
# 4
DIAC is a with 2 buttocks... that is why, its called
diac.when a person farts, the dirty and unbearable smell
directly blows out from the in uni direction... and
while doing potty.. especially while the person is having
dysentery or doing liquid potty.. the potty directly flush
out through one direction from the ..

TRIAC is a with 3 buttocks... that is why, its
called triac. when a person farts, the dirty and unbearable
smell directly blows out from the in two
direction... and while doing potty.. especially while the
person is having dysentery or doing liquid potty.. the potty
directly flush out through two direction from the ..
 
Is This Answer Correct ?    7 Yes 15 No
Hagura
 
Answer
# 5
DIAC is a with 2 buttocks... that is why, its called
diac.when a person farts, the dirty and unbearable smell
directly blows out from the in uni direction... and
while doing potty.. especially while the person is having
dysentery or doing liquid potty.. the potty directly flush
out through one direction from the ..

TRIAC is a with 3 buttocks... that is why, its
called triac.when a person farts, the dirty and unbearable
smell directly blows out from the in 2 direction...
and while doing potty.. especially while the person is
having dysentery or doing liquid potty.. the potty directly
flush out through two direction from the ..
 
Is This Answer Correct ?    1 Yes 15 No
Hagura
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
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what is the difference between brushed alternator ,brushless alternator & permanent alternator ?   1
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directional relay is typically used to respond in fault condition who it can be used just as reverse power protection which purely senes direction reversal to operate a circuit breaker?   1
If one 10 Hp 3phase induction motor connected in 380volt 50Hz. and again its connected to 380volt 60Hz. howmuch currrent and power take on both time?????   1
 
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