Thyristor Chopper Circuits MCQ Quiz in తెలుగు - Objective Question with Answer for Thyristor Chopper Circuits - ముఫ్త్ [PDF] డౌన్‌లోడ్ కరెన్

Thyristor Chopper Circuits Question 1:

A current commutated chopper is fed from a dc source of 230 V, its commutating components are L = 20 μH and C = 50 μF. If load current of 200 A is assumed constant during the commutation process, the Turn – off time of main thyristor is_______ (in μ sec)

Thyristor Chopper Circuits Question 2:

A voltage commutated chopper has the following parameters , load circuit parameters = 0.5 Ω, 2.5 mH, 45 V. Commutation circuit parameters:

L = 10 μH and C = 40 μF

T_on = 800 μ sec, T = 2000 μ sec.

For a constant load current of 100 A. The turn off time for main thyristor and auxiliary thyristor respectively are –

Thyristor Chopper Circuits Question 3:

In the chopper circuit shown, the main thyristor (T_M) is operated at a duty ratio of 0.8. Which is much larger than the commutation interval. If the maximum allowable reapplied dv/dt on T_M is 50 V/μs, what should be the theoretical minimum value of C₁? Assume current ripple through L₀ to be negligible.

Thyristor Chopper Circuits Question 4:

The circuit in the figure is current commutated dc-dc chopper where Th_Mis the main SCR and Th_Auxis the auxiliary SCR. The load current is constant at 10 A. Th_M is ON.Th_Aux is triggered at t = 0, Th_M is turned off between