电工年审试题

电工年审试题 Electrical review - test questions (two) 1, the conductor through the insulation must be good, and its voltage rating shall not be less than AC (V) volts. A.36 B.220 C.380 D.500 2, the conductor through the tube generally requires the total cross sectional area of the pipe (including insulation) is not greater than the cross sectional area of the pipe diameter. A 20%B.30%C.40%D.50% 3, the conductor through the tube, a tube shall not be more than () root. A8 B10 C12 D15 4, by using the PVC pipe connection, opening shall be smooth, tube and pipe, and other device applications (box) () connection, connection surface should be coated with a special adhesive. A bandaging method, B insertion method 5, the conductor through the pipe must be in pipe engineering () and then wear the lead. After A starts and B is completed, C starts before the D is completed 6. When laying the pipe, the length of the semi hard pipe shall exceed the following, and the junction box shall be installed. A20 B30 C40 D50 7 when laying the pipe, the length of the iron pipe exceeds the following, and the junction box shall be installed. A20 B30 C40 D50 8, when laying the pipe line, there is a bend pipe length of not more than (meters), which should be installed between the junction box. A5 B8 C10 D20 9, when laying the pipe line, there are two bends, the length of the pipe is not more than (meters), which should be installed between the junction box. A5 B8 C15 D20 10, when laying the pipe line, there are three bends, the length of the pipe is not more than (meters), which should be installed between the junction box. A5 B8 C15 D20 11, temporary overhead lines shall not exceed () meters A100 B200 C300 D500 12, the temporary line should be limited by the use of time, generally should not exceed () months. A1 B2 C3 D4 13, three-phase four wire system neutral line ampacity should be the phase line carrying capacity () and above A10%B20%C30%D50% 14, how to operate the high voltage isolating switch correctly: () A. should cut off the power first pull circuit breaker, isolating switch and pull off. When the B. closes the power supply, it closes the short circuit breaker first, and then closes the disconnecting switch. When C. cut off the power supply, pull the disconnecting switch first and then pull the short circuit breaker. When the D. power is cut off, it has nothing to do with the switch. 15, when the electrician works on the electrified low-voltage circuit, the correct method is: () A. disconnect the wire before breaking the line and then breaking the zero line. B. bonding wire shall be connected with phase line and then zero line. C. no matter which line is first or first, it does not affect the requirements of the work. 16, when the electric shock, heartbeat, respiratory interruption, should be used () for rescue. A, artificial respiration B chest compressions C, artificial respiration, and chest compressions 17, the color of the generatrix phase sequence, L1 (U) phase is, L2 (V) phase is, L3 (W) phase. () A, yellow, green and red B, green, red, yellow C, yellow, red, green D, red, yellow, green 18 、 the two coil of voltage transformer has a little grounding, and this grounding should be called () A, repetitive earthing, B, work earthing, C, protection earthing 19, current transformer secondary side rated current is generally () A, A, 2; B; 5; C, 10; D, 15, 20, voltage transformer side rated voltage is generally () V. A, 50; B; 80; C, 100; D, 150 The main effect is 21, the fuse will be protected. A, undervoltage, B, short circuit, C, 10 circuit break, D, open circuit 22, the protection of grounding should be R less than twenty million birds by ohm. A, 2; B; 3; C, 4; D, 5 23, grounding into the depth of not less than twenty million birds meters, A, 2; B; 2.5; C, 3; D, 3.5 24, the two grounding distance not less than 1 meter. A, 2; B; 2.5; C, 3; D, 5 25, the motor using Y- reduced voltage starting mode, starting in the stator windings should be shaped into _________. AY B Delta C Delta Y- 26, the zero line at one or more devices and the earth through the grounding to connect again, called ______. (A) work ground (B) protection ground (C) protection zero (D) repeat ground 27 、 the requirement for the insulation resistance of 220V voltage line is not less than () 0.036M, 0.22, M, Omega 0.5, M 28 、 the requirement for the insulation resistance of 380V voltage line is not less than () 0.038M, 0.22, M, Omega 0.5, M 29 、 the insulation resistance of 36V voltage line shall be no less than () 0.036M, 0.22, M, Omega 0.5, M 30. When the power failure is checked and repaired, the following signs shall be hung on the switch handle of the switch or the switch on the switch when the switch is switched on. () In this work, "stop, high voltage, danger", "forbid closing, someone works."!" 31, three-phase asynchronous motor using Y delta starting, the starting current is full voltage starting current (). A, 1/3, B, 1, C, 1/, 2, D, multiples are not fixed 32, the following instrument accuracy level grouping, can be used as engineering measuring instrument for () group. A, 0.1, 0.2, B, 0.5, 1, C, 1.5, 2.5, 5 33, to measure 380V AC motor insulation resistance, should choose the rated voltage of B insulation resistance meter. () A, 250V, B, 500V, C, 1000V 34, the fuse in the fuse, the role in the circuit is. () Overload protection: voltage protection and short circuit protection 35, the low-voltage lighting lamp on the machine tool, its voltage should not exceed () 110V, II, 36V, 12V 36, with the low voltage test pencil test 220V DC, the luminous bulb is () The two poles give off light 37, the use of external cardiac compression method, the number of actions per minute should be () 16 times, 80 times, not less than 120 times 38, what are the main functions of the safety production regulations? A to ensure the legitimate rights and interests of workers, and mobilize the enthusiasm of workers B promotes production and economic development C promotes social stability 39, the forty-second article of the Constitution stipulates: "the workers in People's Republic of China have (). The state develops the facilities for workers to rest and recuperate, and stipulates the working hours and vacations for workers and staff members" A, the right and duty to rest, B, the power and obligation of labor, C, the power and obligation of compensation In 40 and June 29, 2002, the twenty-eighth meeting of the Standing Committee of the National People's Congress adopted the law of the People's Republic of China on Security (hereinafter referred to as the law on the safety of production), which was implemented on 2002 () A May 1st, B7 1, C11, 1, D12, 1 41, the "security law" strictly stipulates that special operations personnel must undergo special safety training, and by the relevant departments of the government assessment, and obtain () operation qualification certificate, before you can apply for job A, professional B, grade C, special operation D, special operation personnel 42, the sixth chapter of the safety law stipulates that: "if the production and business operation entity commits any of the following acts, it shall be ordered to make corrections within a time limit; if the party fails to correct it within the prescribed time limit, it shall order it to stop production for rectification and may also impose a fine of (or less) the following eighty-two." A, five thousand yuan B, ten thousand yuan C, twenty thousand yuan D, Wu Wanyuan Electrical review - multiple-choice questions [containing answers] 43. the insulation of wire through pipe must be good, and its voltage rating shall not be lower than AC (D) volts. A36 B220 C380 D500 44. conductor through the tube generally requires the total cross-sectional area of the pipe (including insulating layer) is not greater than the diameter of the cross section of the tube (C). A 20%B 30%C 40%D50% 45. wire through pipe, a tube shall not be more than (A) root. A8 B10 C12 D15 46. by using the PVC pipe connection, opening shall be smooth, tube and pipe, and other devices (box) application (B) connection, the connection surface should be coated with a special adhesive. A bandaging method, B insertion method 47. wire through the pipe must be in pipe engineering (B) and then wear the lead. After A starts and B is completed, C starts before the D is completed 48. when the pipe is laid, the length of the semi hard pipe shall exceed the following, and the junction box (B) shall be installed between them. A:20 B:30 C; 40 D; 50 49. when laying pipe, the iron pipe length exceeds the following, in which should be equipped with a junction box (C). A; 20 B; 30 C; 40 D:50 50. when laying the pipe, there is a bent line, the length of the pipe is not more than (D) meters, the middle should be equipped with a junction box. A; 5, B:8, C:10, D:20 51. when laying the pipe line, there are two bends, the length of the pipe is not more than (C) meters, and there should be a junction box. A5 B8 C15 D20 52. when laying the pipe line, there are three bends, the length of the pipe is not more than (B) meters, and there should be a junction box. A5 B8 C15 D20 53. temporary overhead lines shall not exceed (D) m, A100, B200, C300, D500 54. temporary lines should be limited by the period of use, generally should not exceed (C) months. A1 B2 C3 D4 55. the current carrying capacity of neutral line of three-phase four wire system shall be the phase current carrying capacity (D) and above A10%B20%C30%D50% 56. how to operate the high voltage isolating switch correctly: (A) A. should cut off the power first pull circuit breaker, isolating switch and pull off. When the B. closes the power supply, it closes the short circuit breaker first, and then closes the disconnecting switch. When C. cut off the power supply, pull the disconnecting switch first and then pull the short circuit breaker. D. When the power is cut off, it has nothing to do with the switch. 57. the correct way for electricians to work on live low voltage lines is (A) A. disconnect the wire before breaking the line and then breaking the zero line. B. bonding wire shall be connected with phase line and then zero line. C. no matter which line is first or first, it does not affect the requirements of the work. 58., when the electric shock, heartbeat, respiratory interruption, should be used (C) for rescue. A, artificial respiration B chest compressions C, artificial respiration, and chest compressions The color of generatrix phase sequence is L1 (U), L2 (V) is phase, and L3 (W) is phase. (A) A, yellow, green and red B, green, red, yellow C, yellow, red, green D, red, yellow, green The two coil of the 59. voltage transformer has a little grounding, and the ground shall be called (C) A, repetitive earthing, B, work earthing, C, protection earthing 60. current transformer secondary side rated current is generally B A, A, 2; B; 5; C, 10; D, 15, 61. voltage transformer secondary side rated voltage is generally C V. A, 50; B; 80; C, 100; D, 150 The main function of the 62. fuse is B protection. A, undervoltage, B, short circuit, C, 10 circuit break, D, open circuit 63. protection of grounding should be less than C - R cross from ohm. A, 2; B; 3; C, 4; D, 5 64. grounding into the depth of not less than B - M -, A, 2; B; 2.5; C, 3; D, 3.5 65. the two grounding distance not less than D meters. A, 2; B; 2.5; C, 3; D, 5 66. of the motor using Y- reduced voltage starting mode, starting in the stator winding should be shaped into ____A_____. AY B ~ C Y- delta delta sturgeon 67. connect one or more places on the zero line to the ground again by grounding devices, called ____D_____. (A) work ground (B) protection ground (C) protection zero (D) repeat ground 68. the insulation resistance of 220V voltage line shall not be less than (II) The 0.036M Qiong ~ II 0.22 M ~ 0.5 M Qiong Omega 3. 69. the insulation resistance of 380V voltage line shall not be less than (1) The 0.038M Qiong ~ II 0.22 M ~ 0.5 M Qiong Omega 3. 70. the insulation resistance of 36V voltage line is not less than (2) The 0.036M Qiong ~ II 0.22 M ~ 0.5 M Qiong Omega 3. 71. when the power failure is checked and repaired, the following signs shall be hung on the operating handle of the switch or knife switch when the power supply is switched on to the working place. (III) In this work, "stop, high voltage, danger", "forbid closing, someone works."!" 72. three-phase asynchronous motor using Y delta starting, the starting current is full voltage starting current (A). A, 1/3, B, 1, C, 1/, 2, D, multiples are not fixed 73. the following instrument accuracy level groups are used as (c) groups for engineering measuring instruments. A, 0.1, 0. 2 (b 、0.5 、1.0 C 、 1.5 、2.5 、5.0 74.要测量 380V 交流电动机绝缘电阻, 应选用额定电压为 B 的绝缘电阻表. (b) A B C 、1000v 、500v 、 250V 75.熔断器内的熔体, 在电路里所起的作用是 (?). ?过载保护 ?失压保护 ?短路保护 76.机床上的低压照明灯, 其电压不应超过 (?) ?110v ?36v ?12v 77.用低压验电笔测试220v直流电时, 灯泡的发光情况是 (?) ?两极发光 ?一极发光 ?均发光 78.施行胸外心脏按压法时, 每分钟的动作次数应为 (?) ?16次 ?80次左右 ?不小于120次 79.安全生产法规的作用主要表现在哪几个方面 (A B C). A确保劳动者的合法权益, 调动劳动者的积极性 B促进生产和经济的发展 c促进社会稳定 80.《宪法》第42条规定: "(a) 中华人民共和国劳动者有.国家发展劳动者休息和休养的设施, 规定职工的工作时间和休假制度." A、休息的权利义务 b、 劳动的权力和义务 c、 赔偿的权力和义务 81.2002年6月29日全国人大常委会第二十八次会议通过了《中华人民共和国安全法》 (以下简称《安全生产法》), 并于2002年 (c) 施行. To 5月1日 b7月1日 c11月1日 d12月1日 82.《安全法》严格规定特种作业人员必须经过专门安全作业的培训, 并经政府有关部门考核合, 取得 (c) 操作资格证书后, 方能上岗作业. A、职业 b、等级 c、特种作业 d、特种作业人员 83.《安全法》第六章八十二条规定: "生产经营单位有下列行为之一的, 责令限期改正 逾期未改正的, 责令停产停业整顿, 可以并处; (c) 以下的罚款. A、五千元 b、 一万元 c、二万元 d、五万元