# ONLINE MCQ EE-ELECTRIC WELDING 1

Q1. Electric arc welding process produces temperature upto
A.  1000°C
B.  1500°C
C.  3500°C
D.  5550°C
 \$(document).ready(function(){ \$(‘#loaddata1324’).click(function(){ qid1324=\$(‘#qid1324’).val(); section1324=\$(‘#section1324’).val(); type1324=\$(‘#type1324’).val(); subtype1324=\$(‘#subtype1324’).val(); \$.post(‘../../fav’,{ qid:qid1324, section: section1324, type: type1324, subtype: subtype1324 },function(ajaxresult){ \$(‘#getrequest1324’).html(ajaxresult); qid1324=\$(‘#qid1324’).val(”); section1324=\$(‘#section1324’).val(”); type1324=\$(‘#type1324’).val(”); subtype1324=\$(‘#subtype1324’).val(”); }); }); }); Explanation:- Answer : D

Q2. Air craft body is
A.  spot welded
B.  gas welded
C.  seam welded
D.  riveted
 \$(document).ready(function(){ \$(‘#loaddata1325’).click(function(){ qid1325=\$(‘#qid1325’).val(); section1325=\$(‘#section1325’).val(); type1325=\$(‘#type1325’).val(); subtype1325=\$(‘#subtype1325’).val(); \$.post(‘../../fav’,{ qid:qid1325, section: section1325, type: type1325, subtype: subtype1325 },function(ajaxresult){ \$(‘#getrequest1325’).html(ajaxresult); qid1325=\$(‘#qid1325’).val(”); section1325=\$(‘#section1325’).val(”); type1325=\$(‘#type1325’).val(”); subtype1325=\$(‘#subtype1325’).val(”); }); }); }); Explanation:- Answer : D

Q3. In D.C. arc welding
A.  electrode is made positive and work- piece negative
B.  electrode is made negative and workpiece positive
C.  both electrode as well as workpiece are made positive
D.  both electrode as well as workpiece are made negative
 \$(document).ready(function(){ \$(‘#loaddata1326’).click(function(){ qid1326=\$(‘#qid1326’).val(); section1326=\$(‘#section1326’).val(); type1326=\$(‘#type1326’).val(); subtype1326=\$(‘#subtype1326’).val(); \$.post(‘../../fav’,{ qid:qid1326, section: section1326, type: type1326, subtype: subtype1326 },function(ajaxresult){ \$(‘#getrequest1326’).html(ajaxresult); qid1326=\$(‘#qid1326’).val(”); section1326=\$(‘#section1326’).val(”); type1326=\$(‘#type1326’).val(”); subtype1326=\$(‘#subtype1326’).val(”); }); }); }); Explanation:- Answer : B

Q4. During spot welding the current flows for
A.  fraction of a minute to several minutes
B.  fraction of a second to several seconds
C.  few milliseconds
D.  few microseconds
 \$(document).ready(function(){ \$(‘#loaddata1327’).click(function(){ qid1327=\$(‘#qid1327’).val(); section1327=\$(‘#section1327’).val(); type1327=\$(‘#type1327’).val(); subtype1327=\$(‘#subtype1327’).val(); \$.post(‘../../fav’,{ qid:qid1327, section: section1327, type: type1327, subtype: subtype1327 },function(ajaxresult){ \$(‘#getrequest1327’).html(ajaxresult); qid1327=\$(‘#qid1327’).val(”); section1327=\$(‘#section1327’).val(”); type1327=\$(‘#type1327’).val(”); subtype1327=\$(‘#subtype1327’).val(”); }); }); }); Explanation:- Answer : B

Q5. A rectifier for welding has voltage/cur­rent characteristic as
A.  static
B.  variable
C.  drooping
D.  rising
 \$(document).ready(function(){ \$(‘#loaddata1328’).click(function(){ qid1328=\$(‘#qid1328’).val(); section1328=\$(‘#section1328’).val(); type1328=\$(‘#type1328’).val(); subtype1328=\$(‘#subtype1328’).val(); \$.post(‘../../fav’,{ qid:qid1328, section: section1328, type: type1328, subtype: subtype1328 },function(ajaxresult){ \$(‘#getrequest1328’).html(ajaxresult); qid1328=\$(‘#qid1328’).val(”); section1328=\$(‘#section1328’).val(”); type1328=\$(‘#type1328’).val(”); subtype1328=\$(‘#subtype1328’).val(”); }); }); }); Explanation:- Answer : C

Q6. Which of the following electrodes will have leastliameter ?
A.  20 SWG
B.  16 SWG
C.  14 SWG
D.  4 SWG
 \$(document).ready(function(){ \$(‘#loaddata1329’).click(function(){ qid1329=\$(‘#qid1329’).val(); section1329=\$(‘#section1329’).val(); type1329=\$(‘#type1329’).val(); subtype1329=\$(‘#subtype1329’).val(); \$.post(‘../../fav’,{ qid:qid1329, section: section1329, type: type1329, subtype: subtype1329 },function(ajaxresult){ \$(‘#getrequest1329’).html(ajaxresult); qid1329=\$(‘#qid1329’).val(”); section1329=\$(‘#section1329’).val(”); type1329=\$(‘#type1329’).val(”); subtype1329=\$(‘#subtype1329’).val(”); }); }); }); Explanation:- Answer : A

Q7. The metal surfaces for electrical resistance welding must be
A.  lubricated
B.  cleaned
C.  moistened
D.  rough
 \$(document).ready(function(){ \$(‘#loaddata1330’).click(function(){ qid1330=\$(‘#qid1330’).val(); section1330=\$(‘#section1330’).val(); type1330=\$(‘#type1330’).val(); subtype1330=\$(‘#subtype1330’).val(); \$.post(‘../../fav’,{ qid:qid1330, section: section1330, type: type1330, subtype: subtype1330 },function(ajaxresult){ \$(‘#getrequest1330’).html(ajaxresult); qid1330=\$(‘#qid1330’).val(”); section1330=\$(‘#section1330’).val(”); type1330=\$(‘#type1330’).val(”); subtype1330=\$(‘#subtype1330’).val(”); }); }); }); Explanation:- Answer : B

Q8. Increased heat due to shorter arc is harmful on account of
A.  under-cutting of base material
B.  burn through
C.  excessive porosity
D.  all of the above
 \$(document).ready(function(){ \$(‘#loaddata1331’).click(function(){ qid1331=\$(‘#qid1331’).val(); section1331=\$(‘#section1331’).val(); type1331=\$(‘#type1331’).val(); subtype1331=\$(‘#subtype1331’).val(); \$.post(‘../../fav’,{ qid:qid1331, section: section1331, type: type1331, subtype: subtype1331 },function(ajaxresult){ \$(‘#getrequest1331’).html(ajaxresult); qid1331=\$(‘#qid1331’).val(”); section1331=\$(‘#section1331’).val(”); type1331=\$(‘#type1331’).val(”); subtype1331=\$(‘#subtype1331’).val(”); }); }); }); Explanation:- Answer : D

Q9. For arc welding current range is usual­ly
A.  10 to 15A
B.  30 to 40 A
C.  50 to 100 A
D.  100 to 350 A
 \$(document).ready(function(){ \$(‘#loaddata1332’).click(function(){ qid1332=\$(‘#qid1332’).val(); section1332=\$(‘#section1332’).val(); type1332=\$(‘#type1332’).val(); subtype1332=\$(‘#subtype1332’).val(); \$.post(‘../../fav’,{ qid:qid1332, section: section1332, type: type1332, subtype: subtype1332 },function(ajaxresult){ \$(‘#getrequest1332’).html(ajaxresult); qid1332=\$(‘#qid1332’).val(”); section1332=\$(‘#section1332’).val(”); type1332=\$(‘#type1332’).val(”); subtype1332=\$(‘#subtype1332’).val(”); }); }); }); Explanation:- Answer : D

Q10. The purpose of coating on arc welding electrodes is to
A.  stabilise the arc
1. Satish kurrey January 15, 2018