| Other Electrical Engineering Interview Questions |
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| Question |
Asked @ |
Answers |
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| what will happen if dc supply is given to ac motor? |
CTS | 8 |
| .if the vector group of two transformers is not same n tey
r connected in parallel operation then what will happen? |
ABB | 2 |
| can volts/Hz be relied upon to use 460v,60Hz electric
motors on a 380v,50Hz power supply? |
| 1 |
| in a dc motor we supply current only to the armature
conductors,from where is the field winding gets excited then?? |
Siemens | 3 |
| 1)we r having one problem .one dry type
transformer(6.6KV/433V)is taking high magnetizing current on
delta connected HV side of "U" phase when compared to other
two phases.could any body tell the reason why it is happening?
2)why CT secondary side protection core has got higher
winding resistance when compared to that of metering core of
same CT? |
| 2 |
| what is meant by Back emf ?where its occur ? |
| 4 |
| when i am going to take trail on a 3ph sq.i/m motor 5.5kw,
i observed that RPM of the motor is very low as compared to
the rated RPM and also it rotates in clockwise in first ON
command,and anticlock wise in second ON command.
finally i observed that on phase is no available .
but iam not clear about, why the motor is rotates in both
directions without any phase interchanging.pls answer to my
question. |
| 1 |
| why pull the single core cable? |
| 1 |
| How we can calculate the capacity the Air Condition capacity?
like 1 or 1.5 ton's, What is the means of volume of Ton's in
capacity of Air Compressor? Why in ton's,? not any other
Volume? |
| 2 |
| What will happen if we give AC supply to DC motor? |
| 4 |
| In explosive and polluted environments which type of motors
do we use? |
NTPC | 3 |
| Can I use 1 phase power supply to run 3 phase motor? If yes, how? |
| 3 |
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