Home / Online Test / SCR Commutation Techniques Objective Questions – Part 2 Online Test SCR Commutation Techniques Objective Questions – Part 2 S Bharadwaj ReddyLeave a comment SCR Commutation Techniques Objective Questions Power Electronics Objective Questions & Answers 0% For the circuit shown in the figure below, R1 = 50 Ω, R2 = 100 Ω, Vs = 100 V. At the time of turn-on of the SCR, initial thyristor current is 5 A 0 A 3.5 A 10 A Correct! Wrong! - Continue >> Class E commutation is a/an forced commutation technique load commutation technique external-pulse commutation technique line commutation technique Correct! Wrong! - Continue >> For the circuit shown in the figure below, C = 4 pF L = 16 μH Vs = 200V The capacitor voltage after the SCR is self commutated is -400 V -100 V 0 V -200 V Correct! Wrong! - Continue >> ___________ commutation is usually used in phase-controlled rectifiers load forced line external-pulse Correct! Wrong! - Continue >> Parallel-capacitor commutation is load commutation external-pulse commutation line commutation forced commutation Correct! Wrong! - Continue >> Natural commutation of an SCR takes place when voltage across the device becomes negative gate current becomes zero voltage across the device becomes positive anode current becomes zero Correct! Wrong! - Continue >> For the circuit shown below, The maximum value of current through thyristors T1 & TA can be given by Vs/R + LC, Vs Vs/LC, Vs/R Vs/R, Vs√C/L Vs √C/L, Vs/R Correct! Wrong! - Continue >> For the circuit shown in the figure below, C = 4 pF L = 16 μH Vs = 200 V The peak thyristor current is 400 A 100 A 800 A 50 A Correct! Wrong! - Continue >> For the circuit shown in the figure below, ___ type of commutation would take place for the SCR (THY1) external-pulse line forced load Correct! Wrong! - Continue >> Below is the circuit of a resonant-pulse commutation, the maximum voltage to which the capacitor C charges is √2Vs 2 Vs/2 Vs 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 >> SCR Commutation Techniques-2 I got %%score%% of %%total%% right Share your results Facebook Facebook Twitter Google+ ↺ PLAY AGAIN ! Previous Post:SCR Commutation Techniques Objective Questions – Part 1Next Post:Single-Phase Half Wave AC-DC Converter Objective Questions – 1 Related Articles Online Test Permanent Magnet DC (PMDC) Motors Questions January 2, 2015 Online Test Digital Electronics Objective Questions – Set 2 May 18, 2017 Online Test Torque in DC Machines January 2, 2015 Online Test Electric Circuits Objective Questions – Set 15 December 4, 2014 Online Test Read Only Memory (ROM) Objective Questions – Part 2 May 1, 2015 Online Test Compatibility or Interfacing Objective Questions May 1, 2015 Online Test 1P-Diode Full Wave Rectifier Questions and Answers – Part 2 December 1, 2014 Online Test Diode-Transistor Logic (DTL) Objective Questions May 1, 2015 Online Test Measurements & Instrumentation Quiz – Set 7 June 7, 2017 Online Test Characteristics of Transducers Objective Questions January 3, 2017 Online Test Induction Generator January 2, 2015 Online Test Flux and MMF Phasors and Waves in Induction Motors January 2, 2015 Also Read : 3-Phase Bridge Inverters Objective Questions – 2 December 1, 2014 IR Radio Sensors Objective Questions March 30, 2017 Hall Effect Transducers Objective Questions February 8, 2017 Leave a Reply Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website Save my name, email, and website in this browser for the next time I comment.