I try to check the three phase voltage in multimeter, in
125A isolator switch incommer. first i touch R phase, and
then i touch Y phase using multimeter, the moment i touched,
it blasts and that moment i got blindness. multimeter
selector position is correct(750V AC MODE AND RED PROBE WASS
IN v AND BLACK PROBE WASS IN COM. MODE. COULD ANYBODY GIVE
ANSWER FOR THIS TO AVOID FURTHER ACCIDENTS PLEASE?

Answers were Sorted based on User's Feedback



I try to check the three phase voltage in multimeter, in 125A isolator switch incommer. first i tou..

Answer / anand yadav

The distance between the live parts would be very small and
meter prob exposed part accidently (prob slipped,sudden
noise,vibration etc.)shorted the two phases,and a results
in a ballast.

Is This Answer Correct ?    3 Yes 0 No

I try to check the three phase voltage in multimeter, in 125A isolator switch incommer. first i tou..

Answer / pillay

your selector switch position was correct ,by right the
multimeter should have given you the voltage reading ,but
than some multimeter comes with a separate probe socket for
testing of amperes. maybe maybe, the probe was wrongly
plugged into this socket.

Is This Answer Correct ?    2 Yes 0 No

Post New Answer

More Electrical Engineering Interview Questions

why synchronous motor has zero starting ?

8 Answers   NTPC,


how to select the isolation tranformer for siemens 802dsl cnotroller

1 Answers   Siemens,


Differences between 415v ac and 440v ac

3 Answers  


How to design the NGR Resistance

1 Answers  


Please tell me the power flow from pmg to main rotor of an alternator (Including AVR unit)?

1 Answers   Hindalco,


How eddy current generation support the idea of train braking?

1 Answers  


A separately excited dc motor having 2 ohm armature resistsance draws a current of 10A and torque developed is 20 Nm under rated field condtion. the speed of the motor under the rated field condtion , when it is connected to a 100V DC source and delivering 10Nm torque....

2 Answers   DRDO,


is this the formula of building wiring to get the main breaker.Watts/volts*.8%+higher motor*(25%)=ampere. yes or no or send the correct formula for building wiring.

1 Answers  


A copper wire of length l and diameter d has potential difference V applied at its two ends. The drift velocity is vd. If the diameter of wire is made d/3, then drift velocity becomes

1 Answers  


the site measured knee point voltage of protection class CTs should be greater than rated knee point voltage? what about meetering class CTs. Should it be below the rated knee point voltage?

1 Answers  


why we ground the scondary of current transformer.

4 Answers  


What will happen if the generator turns in a wrong direction?

2 Answers  


Categories
  • Civil Engineering Interview Questions Civil Engineering (5086)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4453)
  • Electrical Engineering Interview Questions Electrical Engineering (16638)
  • Electronics Communications Interview Questions Electronics Communications (3918)
  • Chemical Engineering Interview Questions Chemical Engineering (1095)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (239)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (259)
  • Instrumentation Interview Questions Instrumentation (3014)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (124)
  • Power Plant Engineering Interview Questions Power Plant Engineering (172)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (25)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1379)