2 Jul 2025 ELECTRICIAN 2nd YEAR MODULE – Transmission and Distribution 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 <<12345678910111213141516171819202122232425>> 0% Question 1 of 25 1. What is the reason of keeping binding wire gap too close and very tight in pin insulator? Avoid oxide formation Avoid sparking Avoid atmospheric pressure Avoid corrosionQuestion 1 of 25Question 2 of 25 2. What is the insulation resistance between any two conductors in a medium voltage domestic installation as per IE rules? More than one Mega ohm More than three Mega ohms Infinity More than two Mega ohmsQuestion 2 of 25Question 3 of 25 3. Why the disc pin insulators outer surface is made by glazing and bent the sides inward? Disables continuous water flow in rainy season Not to attract birds to sit on it To offer high mechanical strength To withstand high voltageQuestion 3 of 25Question 4 of 25 4. What is ACSR stands for? Aluminium Core Steel Reinforced Aluminium Conductor Steel Reinforced All Conductors Steel Reinforced Aluminium Covered Steel ReinforcedQuestion 4 of 25Question 5 of 25 5. What is the name of conductor used on overhead lines? Aluminium Galvanised iron Hard drawn copper ACSRQuestion 5 of 25Question 6 of 25 6. Which type of line insulator is used at the dead ends of the H.T overhead lines? Post insulator Stay insulator Disc insulator Pin insulatorQuestion 6 of 25Question 7 of 25 7. What is the name of the insulator used in O.H lines? Strain insulator Post insulator Shackle insulator Pin insulatorQuestion 7 of 25Question 8 of 25 8. Why steel is reinforced in ACSR conductors used for over head lines? To reduce the line voltage drop To increase the tensile strength To increase the current carrying capacity To minimize the line sagQuestion 8 of 25Question 9 of 25 9. Which is the permissible load for lighting subcircuit in domestic wiring as per IE rules? 800 W 3000 W 1200 W 2400 WQuestion 9 of 25Question 10 of 25 10. What is the advantage of AC power transmission? Voltages can be stepped up and stepped down easily Stress on transmission lines is minimum Low voltage drop in transmission lines Corona loss negligibleQuestion 10 of 25Question 11 of 25 11. Which substation the transmission line voltage is stepped down to consumer supply voltage? Secondary substation Distribution substation Mobile substation Mining substationQuestion 11 of 25Question 12 of 25 12. What is the advantage of over head lines compared to underground cable? Not liable to the hazards from lightning discharges No interference with the communication lines Public safety is more Faults can be located easilyQuestion 12 of 25Question 13 of 25 13. What is the main purpose of crossarm used in electric poles? Supporting the line conductors Avoids short circuit between conductors Holding the insulators on overhead line Reduces conductor sag between supportsQuestion 13 of 25Question 14 of 25 14. What is the type of over head line joint? Compression joint for ACSR Straight sleeve joint Straight joint through connectors Twisted jointQuestion 14 of 25Question 15 of 25 15. Which electric lines connect the substation to distributors in distribution system? Distributors Feeders Service lines Service mainsQuestion 15 of 25Question 16 of 25 16. What is the purpose of cross-arm in O.H lines? Reduce the sag of the lines between poles Protect from short between conductors Holding the insulators where the conductors are fastened Provide more support to the O.H poleQuestion 16 of 25Question 17 of 25 17. What will happen to the skin effect on the O.H conductors, if the conductor diameter is small (<1cm)? Increases to maximum Becomes negligible Decreases half of the value No effect, remain sameQuestion 17 of 25Question 18 of 25 18. What is the name of the insulator? Suspension insulator Stay insulator Single shed pin insulator Shackle insulatorQuestion 18 of 25Question 19 of 25 19. What is the voltage ratio in A.C distribution line adopted for domestic consumers? 415 V/240 V 240 V/110 V 415 V/110 V 11 KV/415 VQuestion 19 of 25Question 20 of 25 20. How the sparking on the aluminium cored conductors binding joints can be prevented? Providing guard wires below the conductors Providing more than one binding Keeping binding turns very close Making binding turns very tightQuestion 20 of 25Question 21 of 25 21. What will happen to the string arrangement of disc insulators, if one of the disc insulator gets damaged? Whole string become useless Damaged insulator and the adjacent insulator will not function Only the damaged disc will not function No effect operates normallyQuestion 21 of 25Question 22 of 25 22. What is the reason for the conductor cross-sectional area can fully utilised on transmission of DC as compared to AC? No heat loss No corona loss No power loss No skin effectQuestion 22 of 25Question 23 of 25 23. Which type of A.C transmission is universally adopted? Two phase four wire Single phase two wire Three phase three wire Two phase three wireQuestion 23 of 25Question 24 of 25 24. What is the name of line insulator? Suspension type insulator Pin type insulator Shackle type insulator Disc type insulatorQuestion 24 of 25Question 25 of 25 25. Which type of line insulator is used for terminating on corner post? Suspension insulator Strain insulator Pin insulator Shackle insulatorQuestion 25 of 25 Loading...
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