Chapter 11 THYRISTORS & THEIR APPLICATIONS MCQs 10 min Score: 0 Attempted: 0/10 Subscribe 1. . A thyristor (SCR) is a (A) P-N-P device (B) P-N-P-N device (C) N-P-N device (D) P-N deviceShow All Answers 2. . A ______________ is a solid-state semiconductor device with four layers of alternating P- and N-type materials. (A) Thyristor (B) Resistive Loads (C) Transistors (D) None of the aboveShow All Answers 3. . SCR stands for? (A) source-controlled rectifier (B) source-current rectifier (C) silicon-controlled rectifier (D) silicon-current rectifierShow All Answers 4. . The thyristor is a ________ layered, _______ terminal semiconductor device, with each layer consisting of alternately N-type or P-type material (A) 3, 4 (B) 4, 3 (C) 4, 4 (D) 3, 3Show All Answers 5. . SCR is a __________ device (A) Uncontrolled (B) Voltage (C) Semi-controlled (D) Fully controlledShow All Answers 6. . The static V-I curve for the SCR is plotted for (A) IavsVa with Ig as a parameter (B) Ia (anode current) vs Ig (gate current), Va (anode – cathode voltage) as a parameter (C) VavsIg with Ia as a parameter (D) Ig vs Vg with Ia as a parameterShow All Answers 7. . Which terminal does not belong to the SCR? (A) Base (B) Gate (C) Anode (D) CathodeShow All Answers 8. . A Triac is a ______________? (A) 2 terminal switch (B) 2 terminal bilateral switch (C) 3 terminal bilateral switch (D) 3 terminal bidirectional switchShow All Answers 9. . The normal way to turn on a diac is by (A) Gate current (B) None of the above (C) Either of the above (D) Breakover voltageShow All Answers 10. . Diac has ………….. terminals (A) None of the above (B) Three (C) Four (D) TwoShow All Answers
