Chapter 14 RECTIFIERS (CONVERTERS) MCQs 10 min Score: 0 Attempted: 0/10 Subscribe 1. . An SCR has three terminals viz …………… (A) Cathode, anode, gate (B) Anode, cathode, grid (C) Anode, cathode, drain (D) None of the aboveShow All Answers 2. . An SCR is sometimes called ………… (A) Triac (B) Thyristor (C) Unijunction transistor (D) DiacShow All Answers 3. . An SCR combines the features of ………….. (A) A rectifier and transistor (B) A rectifier and resistance (C) A rectifier and capacitor (D) None of the aboveShow All Answers 4. . An SCR is turned off by ……………. (A) None of the above (B) Reducing gate voltage to zero (C) Reverse biasing the gate (D) Reducing anode voltage to zeroShow All Answers 5. . In an SCR circuit, the angle of conduction can be changed by ………. (A) Changing anode voltage (B) Changing gate voltage (C) Reverse biasing the gate (D) None of the aboveShow All Answers 6. . When SCR is OFF, the current in the circuit is ……………. (A) Small leakage current (B) Exactly zero (C) Large leakage current (D) None of the aboveShow All Answers 7. . The normal way to turn on a SCR is by …………….. (A) Appropriate gate current (B) Appropriate anode current (C) Breakover voltage (D) None of the aboveShow All Answers 8. . An SCR is a ……………….. triggered device (A) Current (B) Voltage (C) Voltage as well as current (D) None of the aboveShow All Answers 9. . In an SCR circuit the supply voltage is generally ……….. that of breakover voltage (A) Equal to (B) Less than (C) Greater than (D) None of the aboveShow All Answers 10. . If firing angle in an SCR circuit is increased, the output ………… (A) Remains the same (B) Is increased (C) Is decreased (D) None of the aboveShow All Answers
