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Question
what is a universal motor? how it works?
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
Universal motor is a motor, it can run both AC & DC Supply,
it operate with three kind topology.
1. AC drive with TRIAC,
2. DC drive with Traic,
3. DC drive with IGBT,
 
Is This Answer Correct ?    21 Yes 5 No
Rajilatha
 
Answer
# 2
Universal motor is a motor, it can run both AC & DC Supply,
it contence carbon bruses, example of motor is we use at
home mixer cum grinder.
 
Is This Answer Correct ?    17 Yes 1 No
Anil Bhatia
 
 
 
Answer
# 3
universal motor is a AC series motor .. it has capability to
work for both as and dc supply .
it can rotate with very high speed nearly 3600 RPM to 25000
rpm. Its the only motor which is having high range of speed
the main applications of this motors are
electric shavers,electric hand drillers.office machines
etc
these motors are avilable from the range 1/4 HP to 3/4 HP
 
Is This Answer Correct ?    7 Yes 5 No
Venkatesh Naik
 
Answer
# 4
Its a motor is work in both DC and ACsupply. 
Is This Answer Correct ?    4 Yes 2 No
Boopathi
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
how to define vector group of transformer Engro 1
in telecom we are using neutral?   1
the electric traction poles having 3 cables n two cables touches with a insulator (or any) another one separated but it will be running 1-phase why?   4
why can't we increase the voltage by increasing the field voltage in order to get higher voltage.so that we can eliminate step up transformer Bhel 4
1.what is surge used in power system 2.what is switching used in power system 3.what is lightning used in power system Areva 1
Why a Transformer Noise during its running condition ?? NTPC 11
what are cable earthing and bus earthing trucks?when and where they are used?   1
what is a panel board?   1
If i want to build 230kv substation what are the equipments to be installed?   7
why do we have 230v a.c. as general voltage for domestic supply rather than others?   2
how we can classify the circuit braker???????   1
In the transformer, in which form we see the losses of transfprmer ?   3
 
For more Electrical Engineering Interview Questions Click Here 
 
 
 
 
 


   
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