2 Jul 2025 ELECTRICIAN 2nd YEAR MODULE – Synchronous Motor and MG Set ONLINE TEST by admin | posted in: nimi online test, nimionilne, NSQF, NSQF LEVEL 4, online test AITT | 0 TRANSLATE THIS QUIZ IN YOUR LANGUAGE इस प्रश्नोत्तरी का अपनी भाषा में अनुवाद करें <<123456789101112131415161718>> 0% Question 1 of 18 1. What is the purpose of damper winding in a synchronous motor at starting? Produce a high magnetic-field to maintain a constant speed Produce high voltage to initiate the rotation Produces torque and runs near in synchronous speed Produce high current to start rotate the motorQuestion 1 of 18Question 2 of 18 2. Which converter is having high efficiency? Mercury arc rectifier Rotary converter SCR converter Motor generator setQuestion 2 of 18Question 3 of 18 3. What is the function of damper windings in synchronous motor? Maintain power factor Maintain constant speed Start the synchronous motor Excite the field windingQuestion 3 of 18Question 4 of 18 4. How synchronous motor works as a power factor corrector? Varying the line voltage Decreasing the speed of motor Varying the field excitation Increasing the speed of motorQuestion 4 of 18Question 5 of 18 5. Why the LED's are avoided as converters in rectifier diodes? Very low power device Heavily doped device Designed for light emitting Very sensitive to temperatureQuestion 5 of 18Question 6 of 18 6. Why the synchronous motor fails to run at synchronous speed? Open in damper winding Insufficient excitation Defective pony motor Short in damper windingQuestion 6 of 18Question 7 of 18 7. Which acts as both inverter and converter? Synchronous converter Semi conductor diode Metal rectifier Mercury arc rectifierQuestion 7 of 18Question 8 of 18 8. Which application requires only DC? Stepping up of voltage Operating repulsion motor Electroplating Operating induction motorQuestion 8 of 18Question 9 of 18 9. What is the function of the part marked as 'X' of the rotary converter? Helps to deliver without noise Collects the delivered direct current Converts AC to DC Reduces voltage dropQuestion 9 of 18Question 10 of 18 10. What is the name of the converter? Mercury arc rectifier Rotary converter Silicon controlled rectifier Metal rectifierQuestion 10 of 18Question 11 of 18 11. Which is the main application of synchronous motor? Elevators AC to DC converter Paper rolling mills Power factor correction deviceQuestion 11 of 18Question 12 of 18 12. Why exciter is essential to run a synchronous motor? Reduce the losses in motor Improve the power factor Run the motor at synchronous speed Carry more load in motorQuestion 12 of 18Question 13 of 18 13. How the synchronous motor is used as a synchronous condenser? Varying the motor load Varying stator voltage in motor Varying stator current in motor Varying the rotor excitationQuestion 13 of 18Question 14 of 18 14. What is the function of inverter? Smoothening A.C sine wave Convert pulsating DC into pure D.C Convert A.C to D.C Convert D.C to A.CQuestion 14 of 18Question 15 of 18 15. Why D.C supply is necessary for synchronous motor operation? Run the motor with over load Start the motor initially Reduce the losses Run the motor at synchronous speedQuestion 15 of 18Question 16 of 18 16. Which converting device can be over loaded? Rotary converter Mercury arc rectifier Motor generator set Rectifier unitQuestion 16 of 18Question 17 of 18 17. What is the name of the converter? Mercury arc rectifier Motor-Generator set Rotary converter Metal rectifierQuestion 17 of 18Question 18 of 18 18. What is the advantage of motor generator set? High efficiency Noiseless Low maintenance required DC output voltage can be easily controlledQuestion 18 of 18 Loading...
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