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Yes, we can use triac in the multi-quadrant chopper.

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Answer : A dc chopper is fed from a constant voltage mains the duty ratio of chopper is progressively increased while the chopper feeds an RL load. The per unit current ripple would increase to a maximum value at α = 0.5 and then decrease

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Answer : 1) GTO: 2) TRIAC: 

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Answer : SCR is more utilized as compared to Triac because it is available with higher ratings

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Answer : An FET is a better chopper than a BJT because it has lower offset voltage

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Answer : Chopper controlled DC motor

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Answer : TRIAC is an ac switch which can be made to conduct on both half cycle of AC voltage.

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Answer : A triac is a device which acts as a Thyristor in both directions

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