COMMON FAULTS OF STARTERS AND SPEED CONTROLLERS MCQs – CHAPTER 2 DAE 10 min Score: 0 Attempted: 0/10 Subscribe 1. DOL starter is used for: (A) Induction motor (B) Squirrel cage motor (C) DC compound motor (D) Universal motorShow All Answers 2. How many magnetic contactors are used in star delta starter: (A) 2 (B) 5 (C) 4 (D) 3Show All Answers 3. The speed of motor in star connection is: (A) Slow (B) High (C) Full (D) None of theseShow All Answers 4. VFD stands for: (A) Variable air volume (B) Variable frequency motor (C) None of these (D) Variable frequency driveShow All Answers 5. Soft starter is used for: (A) Both b & c (B) As a starting device (C) As a protection device (D) As a measuring deviceShow All Answers 6. Function of inverter is: (A) Converts DC supply to AC supply (B) Converts AC supply to DC supply (C) To control power factor (D) None of theseShow All Answers 7. DC drive is used for: (A) DC generators (B) AC motors (C) DC motors (D) All of theseShow All Answers 8. Soft starter is a: (A) Speed controlling device (B) Protecting device (C) Measuring device (D) All of theseShow All Answers 9. In general, which rating of the motor is operated in star delta starter: (A) 1 Horse power (B) 2 Horse power (C) 15 Horse power (D) 3 Horse powerShow All Answers 10. Speed of AC motor can be controlled by: (A) Soft starter (B) VFD (C) Magnetic contactor (D) MCBShow All Answers
