Online TestThyristor Gating Circuits Objective Questions Thyristor Gating Circuits Objective Questions Power Electronics Objective Questions & Answers 0% The improved version of the UJT oscillator triggering circuit is the ramp triggering ramp & pedal triggering cosine-pulse triggering rc triggering Correct!Wrong!- Continue >> RB1 = 3 kΩ & RB2 = 6 kΩ. Find the intrinsic stand-off ratio (η) of the UJT 3 1/3 9 2/3 Correct!Wrong!- Continue >> The pulse gating is not suitable of RL loads It is suitable of every type of load RC loads R loads Correct!Wrong!- Continue >> In case of a cosine firing scheme, __________ is used to get a cosine wave an integrator circuit a comparator ic 555 a differentiator circuit Correct!Wrong!- Continue >> The firing-angle delay is directly proportional to the synchronizing transformer voltage inversely proportional to the control signal voltage inversely 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 shorted using a resistor the capacitor should be removed the diode should be replaced by a diac the diode should be replaced by a bjt Correct!Wrong!- Continue >> In the thyristor gating circuit, the supply to the pulse amplifier is provided by the control signal generator synchronizing transformer isolation transformer zcd Correct!Wrong!- Continue >> If the gating circuits generator negative pulses, then those can be removed by using zener diodes clampers clippers schmit triggers Correct!Wrong!- Continue >> The decaying factor in the wave shape of the output pulses from the pulse transformer is its inductance resistance transformer ratio capacitance Correct!Wrong!- Continue >> In the thyristor gating circuit, the ZCD is used to convert AC input the ramp voltage produce a train of pulses used to step-down the voltage amplify the voltage 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 ↺ PLAY AGAIN ! Share With Your Friends Facebook Twitter LinkedIn Pinterest Email WhatsApp
