Home / Online Test / Thyristor Gating Circuits Objective Questions Online Test Thyristor Gating Circuits Objective Questions S Bharadwaj ReddyLeave a comment Thyristor Gating Circuits Objective Questions Power Electronics Objective Questions & Answers 0% In the thyristor gating circuit, the ZCD is used to produce a train of pulses convert AC input the ramp voltage amplify the voltage used to step-down the voltage Correct! Wrong! - Continue >> The improved version of the UJT oscillator triggering circuit is the rc triggering cosine-pulse triggering ramp triggering ramp & pedal triggering Correct! Wrong! - Continue >> The decaying factor in the wave shape of the output pulses from the pulse transformer is its capacitance inductance resistance transformer ratio Correct! Wrong! - Continue >> In the thyristor gating circuit, the supply to the pulse amplifier is provided by the synchronizing transformer control signal generator zcd isolation transformer Correct! Wrong! - Continue >> The pulse gating is not suitable of It is suitable of every type of load RL loads RC loads R loads Correct! Wrong! - Continue >> The firing-angle delay is inversely proportional to the synchronizing transformer voltage inversely proportional to the control signal voltage directly proportional to the synchronizing transformer voltage directly proportional to the control signal voltage Correct! Wrong! - Continue >> If the RC firing circuit used for firing an SCR is to be used to fire a TRIAC then the diode should be replaced by a diac the capacitor should be removed the diode should be shorted using a resistor the diode should be replaced by a bjt Correct! Wrong! - Continue >> In case of a cosine firing scheme, __________ is used to get a cosine wave a comparator an integrator circuit ic 555 a differentiator circuit Correct! Wrong! - Continue >> If the gating circuits generator negative pulses, then those can be removed by using schmit triggers clippers zener diodes clampers Correct! Wrong! - Continue >> RB1 = 3 kΩ & RB2 = 6 kΩ. Find the intrinsic stand-off ratio (η) of the UJT 1/3 9 3 2/3 Correct! Wrong! - Continue >> Share the quiz to show your results ! Facebook Facebook Just tell us who you are to view your results ! Show my results >> Gating Circuits I got %%score%% of %%total%% right Share your results Facebook Facebook Twitter Google+ ↺ PLAY AGAIN !
