Answer / kanth

scr is a unidirectional device
and triac is a bi-directional

Answer / akshay ghadge

SCR
1.SCR is a unidirectional device.
2.the gate current can be only positive.
3.SCR can operate in only one quadrent of v-i characteristics.
4.UJT is used for triggering SCR.

TRIAC
1.IS bi-directional device.
2.gate current can be positive or negative.
3.can operate in two quadrants of v-i characteristics.
4.diac is used for triggering triac

Answer / hema

SCR is a 3 layer junction & unidirectional device.
TRIAC is a 3 layer junction & bi-directional device.

Answer / prachi ballal

scr contorls the amount of d.c. power
and triac controls the amount of a.c. power in a load

Answer / lokesh mehta

Scr is 4 layer device nt 3 layer first of all, and it is of 3 junctinal devive and it is unidirectional device whereas, triac is 3 junctional device and is bidirectinal device. This can be checked by wikipedia.

Answer / balamurugan

The antiparallel scr is called thyristor,it cannot be used
in high power application,but the scr can be able to handle
large voltage and current....,thats why in
A.C/D.C,D.C/A.c,transmission line converter have S.C.R.

Answer / m.b.parthasarathy

SCR is an unidirectional device and it allow current in one direction only. There by it is used in DC circuits mainly.

TRIAC is a bi-directional device and it allows current in both direction. Hence it is mainly used in AC circuits only.

Answer / raj kumar

SCR is a Silicon Control Rectifier which contorl dc output
voltage of self this is Main Member OF Transistor
Family.SCR use in AC TO DC Conversion.

Anitpararel Connection of SCR know as TRIAC it use in AC
Power system for controlling.

Answer / akib shaikh

1) In SCR gate current is positive and in Triac gate current is positive or negative.
2) in SCR UJT as triggering device and in triac DIAC is a triggering device.
3) SCR is a unidirectional device and triac is a bidirectional device. 

Answer / m.b.parthasarathy

THE DIFFERENCE IS VERY SIMPLE. SCR can be used in Direct current only.
TRIAC can be used in Alternating current only.

Moreover, we can assist the subscriber to design the single & three phase transformer up to 1000kva. Please contact our e mail ID:ltpowercontrols@gmail.com

What is the PIU.

1 Answers   Jindal,

What is excitation?

2 Answers  

in science exhibition how lamp can blink when you clap near the lamp ? thank you

0 Answers  

what is the effect of connecting three phase supply lines to three phase auto transformer output terminals through a fuse of 10Amp and a circuit breaker (MCB). Is this connection permanently destroy the transformer?

0 Answers  

Why two nos. un-tensioned wires are placed inside the PSC poles used by powergrid in RGGVY works.

2 Answers   Bhel, Power Grid,

Whai isPCC and MCC Difference?

1 Answers   Pretech Plast,

what happens if DC earthing and AC earthings are shorted?

1 Answers  

how many types of transformer.

3 Answers   Technocrats,

What is the advisble power factor to be maintained in grid connecting power generation plnats without any effecting the generator.

1 Answers  

What do you mean by class of CTs and what is the meaning of cl 1.0, cl5P10, cl 10P10 CTs?

3 Answers  

what are the dimensions for 200 kva transformer plinth (plateform),in which pcc m20 is used..

1 Answers   UPPCL,

How dc generators direction can be reversed ??

2 Answers   GPSC Gujarat Public Service Commission,