电工试题（Electrician examination questions）.doc

电工试题（Electrician examination questions） Special operation safety operation electrician operation question bank (1) Comments: 0 check: 648 times, yiren0510 published at 12:00 2008-08-16 Two, choose a question (fill in the blanks with the correct answer number) 1, clamp meter should be used in a wide range, and then transform the range depending on the size of the measured current. When the switching range (B). A, turn the range switch directly; B, open the jaw first, then turn the range switch 2, to measure the insulation resistance of 380V AC motor, the insulation resistance meter with rated voltage (B) shall be selected A, 250V, B, 500V, C, 1000V 3 when insulation resistance is measured with an insulated resistance meter, the line L and the ground E terminal shall be connected to the measured object with a single wire, wherein the connecting line of the (B) end shall be well insulated from the ground A, L, B, E, C, G 4, outdoor rain using high voltage insulation rod, for blocking water and dry the surface, need to add the right amount of rain cover, rain cover is installed in the middle of the insulating rod, rated voltage 10kV and below, equipped with rain cover less than (A), rated voltage not less than 35kV (C). A, 2 B, 3 C, 4 D, 5 5, when the electric shock is passed, the current intensity of the body depends on (C) A. electric shock voltage B., body resistance C., electric shock voltage and body resistance D. are wrong 6, the electric current passes through the human bodys way, from exterior, (A) electric shock is most dangerous A. left hand to foot B., right hand to foot C., left hand to right hand, D. foot to foot 7, the electric shock has been unconscious, and there is breathing, but the heart stopped beating, which of the following emergency methods should be used (B)? A. supine traction, B. external heart compression, C. prone back pressure, D. mouth to mouth breathing method 8, the two resistors with the same rated voltage are connected in series in the