By Surendra | June 11, 2020 0 Comment 0% 2 Created by Surendra Electrician Cables Quiz in English Set 1 All Important Question Answers for Electrician Related Exams 1 / 20 The material for armouring on cable is usually none of the above galvanised steel wire steel tape any of the above 2 / 20 If a cable of homogeneous insulation has a maximum stress of 10 kV/mm then the dielectric strength of insulation should be 30 kV/mm 10 kV/mm 15 kV/mm 5 kV/mm 3 / 20 The advantage of oil filled cables is smaller overall size no ionisation oxidation and formation of voids more perfect impregnation all of the above 4 / 20 PVC stands for positive voltage conductor pressed and varnished cloth polyvinyl chloride post varnish conductor 5 / 20 In cables the charging current leads the voltage by 180° lags the voltage by 90° leads the voltage by 90° lags the voltage by 180° 6 / 20 Is a cable is to be designed for use on 1000 kV which insulation would you prefer ? Compressed SFe gas Vulcanised rubber Polyvinyle chloride Impregnated paper 7 / 20 The insulating material should have high dielectric strength high resistivity low permittivity all of the above 8 / 20 Solid type cables are considered unreliable beyond 66 kV because there is a danger of breakdown of insulation due to the presence of voids skin effect dominates on the conductor of corona loss between conductor and sheath material insulation may melt due to higher temperature 9 / 20 The breakdown of insulation of the cable can be avoided economically by the use of none of the above inter-sheaths both and insulating materials with different dielectric constants 10 / 20 High tension cables are generally used up to 66 kV 33kV 11kV 132 kV 11 / 20 If the insulation is replaced by one of relative permittivity 2 the capacitance of the cable will become one half four times double none of the above 12 / 20 Cables for 220 kV lines are invariably mica insulated rubber insulated compressed oil or compressed gas insulated paper insulated 13 / 20 The insulation of the cable decreases with either or the increase in length of the insulation the decrease in the length of the insulation none of the above 14 / 20 If a power cable and a communication cable are to run parallel the minimum distance between the two to avoid interference should be 2 cm 10 cm 400 cm 50 cm 15 / 20 In the cables sheaths are used to none of the above provide enough strength provide proper insulation prevent the moisture from entering the cable 16 / 20 If the length of a cable is doubled its capacitance becomes one-half becomes one-fourth becomes double remains unchanged 17 / 20 Is a cable is to be designed for use on 1000 kV which insulation would you prefer ? Compressed SF6 gas Impregnated paper Polyvinyle chloride Vulcanised rubber 18 / 20 Cables generally used beyond 66 kV are armoured belted S.L. type oil filled 19 / 20 The electrostatic stress in underground cables is zero at the conductor as well as on the sheath same at the conductor and the sheath minimum at the conductor and maximum at the sheath maximum at the conductor and minimum at the sheath 20 / 20 The intersheaths in the cables are used to avoid the requirement of good insulation none of the above minimize the stress provide proper stress distribution कृपया सही सूचना भरें ताकि सर्टिफिकेट ईमेल पर भेजा जा सकें। NameEmailPhone NumberDistrictSchool/Coaching Name Your score is LinkedIn Facebook Twitter VKontakte 0% Restart quiz आपको यह क्विज अच्छी लगी तो 5 स्टार रेटिंग जरुर दें । Send feedback
